If he has 7 more nickels than dimes. The number of quarters that Warren have is 7.
How to determine the number of quarters?Let coins be:
n + d + q = 40
Where;
n = nickels
d =dimes
q = quarters
Hence,
.05n + .10d + .25q = 4.05
n = d + 7
Substitute (d+7) for n
(d+7) + d + q = 40
2d + q = 40 - 7
2d + q = 33
q = (33-2d)
So,
.05(d+7) + .10d + .25q = 4.05
.05d + .35 + .10d + .25q = 4.05
15d + .25q = 4.05 - .35
.15d + .25d = 3.70
Substitute (33-2d) for q
.15d + .25(33-2d) = 3.70
.15d + 8.25 - .5d = 3.70
.15d -.5d = 3.70 - 8.25
-.35d = -4.55
Divide both side by -/35d
d = -4.55 / -.35
d = 13 dimes
Nickels
n = d+7 where d is 13
n = 13 + 7
n = 20 nickels
Quarters
q = (33-2d)
q = 33 - 2(13)
q = 33 - 26
q = 7 quarters
Therefore 7 is the quarters.
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I need help that’s it
Answer:
x-intercept(s): (−5,0)
y-intercept(s): (0,−5)
Explanation:
To find the x-intercept, substitute in 0 for y and solve for x. To find the y-intercept, substitute in 0 for x and solve for y.
Im also in K12 so Ez Good Luck
Hope this helped!
Two cards are drawn without replacement from an ordinary deck. Find the probability that the second is not a red card, given that the first is not a red card.
What is the conditional probability?
Is it possible to apply the conditional probability in its alternative form, P(R2|R1) is n(R1⋂R2) divided n(R1) Given that the product rule hasn't yet been taught, we have advocated this approach.
What is the likelihood of receiving two red cards without being replaced?The probability of drawing a second red in the event that this red is not changed is 9/15,
hence the probability of A is 10/16 * 9/15, or 0.375.
The potential of an event or outcome occurring based on the existence of a prior event or outcome is known as conditional probability. It is determined by multiplying the likelihood of the earlier occurrence by the increased likelihood of the later, or conditional, event.Conditional probability is a term used in probability theory to describe the likelihood that one event will follow another given the occurrence of another event.Is it possible to apply the conditional probability in its alternative form, P(R2|R1) is n(R1⋂R2) divided n(R1) Given that the product rule hasn't yet been taught, we have advocated this approach.To learn more about conditional probability refer to:
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7x=8x+12
How do I solve this
Answer:
x = -12
Step-by-step explanation:
Get X all on one side
7x - 8x = 8x - 8x + 12
-x = 12
x = -12
Answer:
x = -12
Step-by-step explanation:
To solve this, you will need to get all of the variables on one side, and the 12 on the other. You will subtract 8x from both sides to get the equation -x = 12. You can then divide both sides by -1 to get the x alone, and thus you get x = -12.
how many positive integers less than 1000 a) are divisible by 7? b) are divisible by 7 but not by 11? c) are divisible by both 7 and 11? d) are divisible by either 7 or 11? e) are divisible by exactly one of 7 and 11? f ) are divisible by neither 7 nor 11? g) have distinct digits? h) have distinct digits and are even?
The set of positive integers less than 1000 that are:
a)Divisible by 7 are 142
b)Divisible by 7 but not by 11 are 130
c)Divisible by both 7 and 11 are 12
d)Divisible by either 7 or 11 are 220
e)Divisible by exactly one of 7 and 11 are 220
f)Divisible by neither 7 nor 11 are 780
g)Having distinct digits are 576
f)Having distinct digits and even are 337
What is a positive integer?A whole number that is greater than zero is known as positive integer
a)The positive numbers below 1000 that are divisible by 7 are 7, 14, 21, 28,..., 994.
Total terms: 994, divided by 7, plus (n-1)
There are 142 total terms below 1000 that are divisible by 7.
b) The numbers 77, 154, 231, 308, 385, 462, 539, 616, 693, 770, 847, and 924 are all divisible by both 7 and 11.
The total number of integers below 1000 that are divisible by 7 but not 11 therefore equals 142 - (total number of integers divisible by 7 and 11), which means that the total number of integers that fall into this category is 130.
c) The total amount of integers that can be divided by both 7 and 11 equals the total amount of integers that can be divided by 77.
There are 12 total integers below 1000 that can be divided by 77.
d) The total number of integers that can be divided by either 7 or 11 is equal to the sum of the numbers that can be divided by each of those numbers and the number that can be divided by 77.
The total number of integers below 1000 that are divisible by 11 is (11,22,33,...,990). 990 = 11 + (n-1) 11, which equals 90 integers.
Total integers that may be divided by both 7 and 11 are equal to 142 + 90 - 12 = 220.
e) The total number of integers that may be divided by either 7 or 11 perfectly is equal to 142 + 90 - 12 = 220 numbers.
f) The total number of integers that cannot be divided by either 7 or 11 is 1000 - (The total number of integers that can be divided by either 7 or 11), which is 1000 - 220 = 780 numbers.
Distinct digits from 1 to 100 = 100 - Total number of integers below 1000 with distinct digits = 1000 - (non-distinct digits) ( 11,22,33,44,55,66,77,88,99,100),
=> Unique digits from 1 to 100 equal 90.
=> The distinct numerals 101 to 200 equal 100. (101,110,111,112,113,114,115,116,117,118,119,121,122,131,133,141,144,151,155,161,166,171,177,181,188,191,199,200),
=> Unique digits from 101 to 200 are: 100 to 28, 72.
=> Unique numbers between 201 and 1000 = 72 x 8 = 576.
h)Different digits and even values equal to 337
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At a grocery store, three- dozen cookies costs $9.00. What would it cost for one cookie
I need help like asap !!!
only numbers and decimal points
Now we have to,
→ find the required value of c.
Formula we use,
→ (AC)² = (BC)² + (AB)²
Then the value of a will be,
→ c² = (8.1)² + (8.1)²
→ c² = 65.61 + 65.61
→ c² = 131.22
→ c = √131.22
→ [ c = 11.46 yd ]
Hence, value of c is 11.46 yd.
Find the highest common factor (HCF) of 72 and 90
Answer:
Step-by-step explanation:
Factors of 72: 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, and 72
Factors of 90: 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, and 90
The six frequent factors between 72 and 90 are 1, 2, 3, 6, 9, and 18.
Consequently, 18 is the number that links 72 and 90 most frequently.
can someone help pls
Answer:
4 hostel rooms
Step-by-step explanation:
okay so for this all you need to do is read the chart
go to 4-7 and read across to see how many hostel rooms have this many guests go to 20-23 and read across to see how many hostel rooms have this many guests there are 5 rooms with 4-7 guests (because 5 is halfway between 4 and 6 on the chart)there is only 1 room with 20-23 guests (because 1 is halfway between 0 and 2)work out the difference: 5-1 = 4Can anyone write the equation of this graph?
The translated absolute value function graphed is defined as follows:
y = |x - 3| + 5.
What is the absolute value function?The absolute value function, of vertex (h,k), is defined by the following piecewise rule, depending on the input of the function:
f(x) = |x - h| + k = x - h + k, x - h ≥ 0.f(x) = |x - h| + k = -x + h - k, x - h < 0.In this problem, the coordinates of the vertex are given as follows:
h = 3, as the x-coordinate of the vertex is of 3.k = 5, as the y-coordinate of the vertex is of 5.Hence the vertex is given by the following point:
(3,5).
Then the equation graphed is defined by the rule presented as follows:
y = |x - 3| + 5.
Which is a translation of 3 units right and 5 units up of the standard absolute value function.
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What is the equation of the line that passes through the point (8, 6) and has a slope
of o?
The equation of the line that passes through the point (8, 6) and has a slope of 0 is y = 8.
How to find the equation of a line?The equation of a line can be represented in slope intercept form as follows:
y = mx + b
where
m = slopeb = y-interceptTherefore, the equation of the line passes through the point (8, 6) and has a slope of 0.
Therefore,
m = 0
Hence, let's find the y-intercept using the (8, 6)
y = mx + b
6 = 0(8) + b
b = 8
Therefore, the equation is y = 8
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hree students are participating in a walkathon. The data for each student is shown.
Student A: The equation y = 13x represents the amount of money raised (y) for walking (x) miles.
Student B: $36 is raised after walking 3 miles.
Student C:
Miles Walked 4 5
Money Raised $52 $65
Determine which student raised the least amount of money after walking 7 miles.
Student A
Student B
Student C
All three students raised the same amount of money after walking 7 miles.
Student B has raised the least amount of money after walking for 7 miles.
What is unit rate?A unit rate means a rate for one of something.
Given that, three students are participating in a walkathon,
Student A's money is represented by the equation y = 13x, where y is money raised for walking x miles.
Student B raised $36 money for 3 miles and Student C has raised $52 and $65 money for 4 and 5 miles respectively.
Money raised by each of them for a mile =
Student A = $13
Student B = $12
Student C = $13
Money raised by them by walking 7 miles =
Student A = $13*7 = $91
Student B = $12*7 = $84
Student C = $13*7 = $91
Hence, Student B has raised the least amount of money after walking for 7 miles.
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five sevenths raised to the negative first power times eighteen hundredths raised to the second power.
Answer: 0.04536
Step-by-step explanation:
Convert the standard form equation into slope-intercept form. 6x-2y=-20
A railroad
car container can hold 42,000 pounds.
Mr. Evans wants to ship 90 ovens and
some freezers in the same container.
If each freezer weighs 600 pounds,
how many freezers could be shipped
in the container? Explain.
40 freezers could be shipped in the container.
What is a variable?
A variable is a quality that may be measured and take on several values.
We are given that
A railroad container can hold weight=42,000 pounds
Total number of ovens for ship=90
Weight of each oven=200 lbs
Weight of each freezer=600 pounds
We have to find the number of freezers that can be shipped in the container.
Let x be the number of freezers that can be shipped in the container.
According to the question,
42000=90(200)+600x
42000=18000+600x
600x=42000-18000=24000
x=24000/600=40
Hence, 40 freezers can be shipped in the container.
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PLEASE HELP!! I NEED SOMEONE TO HELP ME!
Use distributive property to remove parenthesis.
-9( -3w + 3u - 4)
The answer is 27w - 27u +36 of the given -9( -3w + 3u - 4)
Given,
In the question:
Use distributive property to remove parenthesis.
-9(-3w + 3u - 4)
Now, According to the question:
First, we know:
What does parentheses mean distributive property?
The distributive property allows us to multiply all terms in a parentheses by a number outside of it. a(b +c) = ab + ac.
We have:
-9(-3w + 3u - 4)
Solve by Distributive Property :
-9(-3w + 3u - 4)
Open the bracket:
27w - 27u +36
Hence, The answer is 27w - 27u +36 of the given -9( -3w + 3u - 4)
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the lengths of pregnancies of humans are normally distributed with a mean of 268 days and a standard deviation of 15 days. a baby is premature if it is born three weeks early. what percent of babies are born prematurely?
8.08 percent of babies are born prematurely .
We have following information,
lengths of pregnancy of humans are Normally distributed.
mean of distribution ( μ ) = 268 days
standard deviations of distribution = 15 days
We shall find out the pecent of babies are born. prematurely.
Using the Normal distribution formula ,
Z = ( X - μ ) /σ
where X---> sample mean
μ --> poplution mean
putting the possble values of variables we get,
if a baby born three weaks early then he is considered as premature.
X = 21 , μ = 268 , r =
Z = ( 21-268)/ 15 = - 247/15 = - 16.4
Now, p-value corresponding to Z-value= -16.4 is
8.08..
thus for z= -16.4 , p-value will be 8.08 .. So, 8.08 percent of babies are born prematurely.
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WXYZ is a kite. ∠WXY has a measure of 94° and ∠ZWX has a measure of 112°. Find the measure of ∠ZYW.
well, we know WXYZ is a kite, so is a quadrilateral, namely it has 4 sides, and it has two congruent angles, so
[tex]\underset{in~degrees}{\textit{sum of all interior angles}}\\\\ S = 180(n-2) ~~ \begin{cases} n=\stackrel{number~of}{sides}\\[-0.5em] \hrulefill\\ n=4 \end{cases}\implies S=180(4-2)\implies S=360 \\\\[-0.35em] ~\dotfill\\\\ 94+94+112+\measuredangle ZYW=360\implies \implies \measuredangle ZYW=60[/tex]
Check the picture below.
How do I do this can someone help me plss
Answer:
I think is 50m.
Step-by-step explanation:
Please answer <3
A line passes through the points (-5,10) and (0,-10). What is its equation in slope-intercept form?
y=__x+___
Answer:
The equation for the slope-intercept form is y = 4x - 10
Hope this helps!
Step-by-step explanation:
Slope = [tex]\frac{y_{2}-y_{1} }{x_{2} -x_{1} }[/tex] Equation = y = mx + b
The two points given are ( -5, 10 ) and ( 0, -10 ).
Putting in the values gives you [tex]\frac{-10-10}{0-(-5)} = \frac{-20}{5} =-4[/tex].
y = 4x + b, to find b, insert one of the points:
-10 = 4(0) + b -> -10 = 0 + b, b = -10
Putting it all together gives you y = 4x - 10
Divide and answer in simplest form: 45 ÷ 2
Answer:22.5
Step-by-step explanation:
Temperatures in °F can be converted in °C using the formula
5(F-32)
=
C=
Make F the subject of the formula.
aC + b
Give your answer in the form
C
Att
where a, b and c are all positive integers.
The given formula can be written as 5F = 9C + 160.
What is a Measurement unit?A measurement unit is a unit to measure certain quantities. To find the measurement of a new quantity knows units can be used in operation. As to find the unit for speed we use m/s as a unit, where, m is the unit of distance and s is the unit of time.
Given that,
The conversion formula for °C into °F is 9C = 5(F - 32)
The given formula can be written in the form of cF = aC + b as,
9C = 5(F - 32)
⇒ 5F = 9C + 160
Hence, the given formula can be written by making F as the subject as 5F = 9C + 160.
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Which methods of paying for college do not require repayment? Check all that apply.
Would the reaction rate on graph B of Model 2 ever reach a maximum level? Justify your answer.
By applying the concept of rate of a reaction, The graph B never saturates because the enzyme is always in excess.
What is the enzyme substrate reaction?
The enzyme is called a catalyst as it has an active site where the substrate can bind and convert into the product. Here in the graph the enzyme is amylase, and its substrate is starch. When there is an excess of enzymes in the solution, they can convert it into a product till substrates are available. If the substrate runs out, the reaction will come stop.
As per the concept of rate of a reaction, The graph B never saturates as the enzyme in the reaction is always in excess. These excess enzymes present will convert the starch into simple glucose molecules. Hence, there will be no upper limit, as both are in abundance.
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Help me please ill add more points than usual!
Answer: how
Step-by-step explanation: love
ana is making treat bags to give to her 10 students. she puts x number of gum and 4 pieces of candy in each bag. after she was done she had used a total of 60 pieces. how many pieces of candy did each bag get?
Each bag got 2 pieces of gums and 4 pieces of candies.
Given, that
Ana is making treat bags to give to her 10 students.
She puts x number of gum and 4 pieces of candy in each bag.
She had used a total of 60 pieces.
Now, as she puts 4 pieces of candy in each bag and she prepare total 10 bags.
So, She used total 4×10 = 40 candies
Now, if she used 60 pieces out of which 40 pieces are of candies
Then, 60 - 40 = 20 pieces
20 pieces will be of gums.
So, she puts total 20 pieces of gums in 10 bags
Hence, in each bag she puts 20/10 pieces of gums i.e. 2 pieces of gums
So, each bag got 2 pieces of gums 4 pieces of candies.
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help meeeeeeeee pleaseeeee rn rnnnn!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
help meeeeeeeee pleaseeeee rn rnnnn!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
help meeeeeeeee pleaseeeee rn rnnnn!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
help meeeeeeeee pleaseeeee rn rnnnn!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
A rectangle that maximize the enclosed area has a length 800 yards and width is 800 yards. The maximum area is 640,000 square yards.
In the given question we have to find the maximum area of the rectangular area.
Liana has 3200 yards of fencing to enclose a rectangle.
So we know that the perimeter of rectangle is
P= 2(l+b)
Let length of the rectangle is x yards and width is y yards.
So the equation should be
2(x+y) = 3200
Divide by 2 on both side we get
x+y = 1600................(1)
As we know the area of rectangle is
A = xy
From the equation the value of y is 1600-x.
Now putting the value of y
A = x(1600-x)
A = 1600x-x^2
On differentiating
dA/dx = 1600-2x
Putting dA/dx=0
1600-2x=0
Subtract 1600 on both side we get
-2x= -1600
Divide by -2 on both side we get
x = 800 yards
Now putting the value of x in the y=1600-x
y=1600-800
y=800 yards
So the maximum area is
A= 800*800
A= 640,000 square yards
Hence, a rectangle that maximize the enclosed area has a length 800 yards and width is 800 yards. The maximum area is 640,000 square yards.
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The temperature outside is 15°F. If the
temperature drops 20°, will the outside temperature be represented
by a positive or negative integer? Explain your reasoning.
IF T² = 4π² (h² + k²)
hg
Express k² in terms of T, g and h
The value of the expression in the form of k² will be (T²/4π²)-h²).
What is an expression?The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.
Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.
Given expression is T² = 4π² (h² + k²). The expression for the value of k² will be calculated as,
T² = 4π² (h² + k²)
(h² + k²) = T² / 4π²
k² = (T² / 4π²) - h²
Therefore, the value of the expression in the form of k² will be (T²/4π²)-h²).
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Write the equation of the line in fully simplified slope-intercept form.
go
9
876
8
5
10 %
4
321
-12-11-10-9-8-7-6-5-4-3-2-1
-1
-2
2 3 750 0
-3
-4
-5
-6
5999 2
-7
-8
-9
-11
-12
1 2 3 4 5 6 7 8 9 10 11 12
The equation of the line in fully simplified slope - intercept form is 5x + y = 8 .
In the question ,
a graph of the line is given , we need to find the equation of the given line in the simplified slope - intercept form .
to find the equation , we need minimum two points ,
So , from the graph
we can see that
when x [tex]=[/tex] 0 , the value of y [tex]=[/tex] 8 ,
the first point is (0 [tex],[/tex] 8) .
when x [tex]=[/tex] 2 , the value of y [tex]=[/tex] -2 ,
the second point is (2 [tex],[/tex] -2) .
the slope can be calculated by
slope = (-2-8)/(2-0)
= -10/2
= -5
So , the equation of the line passing through point (2,-2) with slope -5 , in the slope intercept form is
(y -(-2)) = -5(x-2)
y + 2 = -5x + 10
Simplifying further , we get
5x + y = 10 - 2
5x + y = 8
Therefore , The equation line in fully simplified slope - intercept form is 5x + y = 8 .
The given question is incomplete , the complete question is
Write the equation of the line in fully simplified slope-intercept form, the line graph is shown below .
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1. Calculate arithmetic mean from the following data. 50, 60, 70, 80, 65, 70, 90
Answer:
Here ,
sigma x=50+60+65+70+70+80+90=485
N=7
now,
Mean =sigma x÷N
=485÷7
=69.28