Answer:
x=5 Brainliest would be nice :)
Step-by-step explanation:
simplifty the expression -3.4x - 5.7x + 4
Answer:
Hey there!
-3.4x-5.7x+4
-9.1x+4
Let me know if this helps :)
by selling a camera for $2400, ron loses 4%.At what price should he sell it to gain 12%.
Answer: $ 2800
Step-by-step explanation:
2400 is 96% of the initial price of camera which is 2400/0.96 =$2500
Now to gain 12% profit the camera should be sold at 2500+ .12*2500=$2800
Ashlynn, Troy, and Edwin had a challenge to see who could run the farthest in a month. Ashlynn ran 19
miles. Troy ran 3 times as many miles as Edwin, and Edwin ran 4 times as many miles as Ashlynn. How
many miles did Troy run?
Answer:
Troy ran 228 miles.
Step-by-step explanation:
Ashlynn (a) ran 19 miles. Troy (t) ran 3 times as many miles as Edwin, and Edwin (e) ran 4 times as many miles as Ashlynn.
So,
a=19
E=a•4
t=e•3
Knowing a=19, we can solve the first equation. e=19•4, 19•4=76 so e=76
Knowing e=76 we can solve the second equation t=76•3, 76•3=228 so t=228
Answer:
Ashlynn is my name!
Step-by-step explanation:
3/20 convert it to decimal and percentage 62.5% convert it to decimal and fraction
[tex]\huge{\underline{\mathfrak{Question:-}}}[/tex]
» [tex]\dfrac{3}{20}[/tex] convert it to decimal and percentage 62.5% convert it to decimal and fraction.
[tex]\huge{\underline{\mathfrak{Solution:-}}}[/tex]
For converting [tex]\dfrac{3}{20}[/tex] into decimal simply divide 3 by 20= [tex]\dfrac{3}{20}[/tex]
= 3 ÷ 20
= 0.15
Now,
For the second part , let us convert the fraction 62.5% into decimal firstWe know that,
Any number in percentage like, 62.5% can also be written as [tex]\dfrac{625}{100}[/tex]It comes up simple now, divide 625 by 100 to obtain the decimal= 62.5%
= [tex]\dfrac{625}{100}[/tex]
= 6.25
Here, now for the fraction one,
We already have our [tex]\dfrac{625}{100}[/tex]Just make it to it's simplest form= [tex]\dfrac{625}{100}[/tex]
= [tex]\dfrac{625÷5}{100÷5}[/tex]
= [tex]\dfrac{125÷5}{20÷5}[/tex]
= [tex]\dfrac{25}{4}[/tex]
And, the answer in fraction comes [tex]\dfrac{25}{4}[/tex]
_______________________Answer:1. 0.15
1. 15
2. 0.625
2. 5/8
Step-by-step explanation:
A random sample of 1,500 couples was asked the question, "How many children presently reside in your household?" Number of Children Frequency 0 325 1 212 2 660 3 151 4 68 5 or more 84 What number of children occurred the least frequently? Calculate this percent. (2 points) a 0, 21.67% b 0, 11.75% c 5 or more, 5.6% d 4, 4.53%
Answer: d. 4, 4.53%
Step-by-step explanation:
Given table :
Number of Children Frequency
0 325
1 212
2 660
3 151
4 68 ← Least frequency
5 or more 84
Total = 1500
or Sample size of couples = 1500
The number of children occurred the least frequently = 4 [Minimum frequency is 68 at number of children=4]
Percentage =[tex]\dfrac{least\ frequency}{Total}\times100[/tex]
[tex]\dfrac{68}{1500}\times100=4.53\%[/tex]
Hence, the correct answer is d. 4, 4.53%
I need help on an easy question. Whats the answer? Please?
Answer:
C
Step-by-step explanation:
Let's go through each of the answer choices:
I) All real numbers are rational numbers.
This is immediately proven false by irrational numbers: real numbers that are not rational. Examples include π or √2.
II) Zero is an integer number.
This is true. Integers include the set of whole numbers, which includes 0.
III) All counting numbers are whole numbers.
This is true. Whole numbers (0,1,2,3...) is basically the counting numbers (1,2,3,...) but with 0.
IV) Irrational Numbers are not real numbers.
This is false. Real numbers can be divided into two subsets: irrational and rational.
So, our answer is C :)
To find the distance between (17,3) and (17,−5), Marcia used the following equation. Is Marcia correct? Explain. D=|3−(−5)|=8
Answer:
Step-by-step explanation:
The formula for finding the distance between two points is expressed as shown
D = √(x₂-x₁)²+(y₂-y₁)²
Given the coordinate (17,3) and (17,−5), from the coordinates x₁ = 17, y₁ = 3, x₂ = 17 and y₂ = -5.Substituting the values given into the formula;
D = √(17-17)²+(-5-3)²
D = √0²+(-8)²
D = √64
D = 8
According to the result gotten, it can concluded that Marcia is correct although she didn't use the right expression to calculate her distance. She should have taken the square root of the sum of the square of difference in the coordinates axis according to the formula used.
Which is the best estimate of StartFraction 90 over 7 EndFraction divided by 1 and three-fourths? 2 6 12 24
Answer:
The answer is 6!
Step-by-step explanation:
The best estimate of Start Fraction 90 over 7 End Fraction divided by 1 and three-fourths is 6 so, option B is correct.
What is division?It is the basic arithmetic operation, in which you are separating the number into some parts. One of the fundamental mathematical operations is division, which involves breaking a bigger number into smaller groups with the same number of components.
Given:
Start Fraction 90 over 7 End Fraction divided by 1 and three-fourths,
Write the above phrase in mathematical form as shown below,
90 / 7 ÷ 1 3 / 4
convert the mixed fraction into improper fraction as shown below,
90 / 7 ÷ 4 + 3 / 4
90 / 7 ÷ 7 / 4
90 / 7 × 4 / 7
360 / 49
7.346
The nearest value in the option is 6.
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-5x + 32 = 47
What is the answer to the equation
Answer:
x = -3
Step-by-step explanation:
-5x + 32 = 47
-5x + 32 - 32 = 47 - 32
-5x = 15
-5x / -5 = 15 / -5
x = -3
Answer:
[tex]\Huge \boxed{x=-3}[/tex]
Step-by-step explanation:
[tex]\sf -5x + 32 = 47[/tex]
Subtract 32 from both sides.
[tex]\sf -5x + 32-32 = 47-32[/tex]
[tex]\sf -5x=15[/tex]
Divide both sides by -5.
[tex]\sf \displaystyle \frac{-5x}{-5} =\frac{15}{-5}[/tex]
[tex]\sf x=-3[/tex]
Solve the following equation for the value of d.
4(-2d – 3) = 12
Type your answer...
1 point
Solve the following equations for the value of n.
60 = 6 (6 – 2n)
Type your answer...
1 point
Solve the following equations for the value of 2.
-2 (x + 10) + x = 12
Answer:
the full solution is in the picture
d= -3
n= -2
x= -32
conjecture the next number in the sequence 20 18 15 11 6
Answer:
0 it went minus 2 minus 3 minus and so forth
Represent 3kg 9gm using decimals
Answer:
3.009
Step-by-step explanation:
1 Kg is 1000 grams therefore
3 kg 9 g is
3.009
hope this helps you
Evaluate: 50 + 6(12 + 4) – 82.
Answer:
14
Step-by-step explanation:
Follow DMAS formula:
DMAS rule is followed when multiple arithmetic operations are there in a given problem like addition, subtraction, multiplication and division. It tells they should be performed in order of Division, Multiplication, Addition and Subtraction.
=50+6*3 -82
=50+18-82
=68-82
=14
Answer:
64
Step-by-step explanation:
PEMDAS
6(12+4) distribute the 6 to the numbers inside
96
50+96-82
50+96= 146
146-82 = 64
A classroom has 12 juniors and 23 seniors. There are no other students in the
class. What percentage of the students are seniors?
Answer:
66%
Step-by-step explanation:
To find the percentage, we can use this formula:
Part/Whole
In this case, the Part=Seniors and Whole=All of the students in the class
Part/Whole
23/(23+12)
=23/35
=0.65714
=0.66
=66%
what does x equal in the equation − 6 x − 15 = 4 x + 35?
Answer:
x = -5
Step-by-step explanation:
− 6 x − 15 = 4 x + 35
Add 6x to each side
− 6 x+6x − 15 = 4 x+6x + 35
-15 = 10x+35
Subtract 35 from each side
-15-35 = 10x+35-35
-50 = 10x
Divide each side by 10
-50/10 = 10x/10
-5 =x
Answer: x = -5
Step-by-step explanation:
In order to solve this problem, you need to isolate the variable.
In this problem, you need to isolate the x.
-6x -15 = 4x +35
10x = -50
x = -5
You are selling boxes of candy for $3 a box for your school fundraiser. Write a function for the revenue, R, you have earned based on the number of boxes of candy, c, that you have sold. You must use function notation.
Answer:
c x 3 = ?
Step-by-step explanation:
you would get how many boxes you have solded then multiply it by 3
we are using c for boxes of candy.
The notation will be 3 × c = R .
A candy is being sold at $3 for school fundraiser.
If c is no. of boxes of candy then we have to find Revenue R.
What will be the value of 10 pens if one pen costs $3 ?
The cost of 10 pens will be 10 × 3 = $ 30 .
As per the question ;
Price at which candy is being sold is $3 per box.
So ,
price of 1 box = $3
price of c boxes = 3 × c
This is equal to total revenue from school fundraiser.
i.e., 3 × c = R
Thus , the notation will be 3 × c = R .
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A football game sells admission tickets for $6.00 on Friday
nights. At capacity, the stadium holds 650 people. The
function F(p)-6p represents the amount of money the
stadium takes in on Friday night, where p is the number of
people. What is the domain of F(p) in this context? Fill in the
blanks of the domain in interval notation,
*ONLY INPUT NUMBERS
The Domain is [ , ]
The domain of a function is the input value.
In the above formula the domain would be the value of p, which is the number of people at the game.
The capacity of the stadium is 650 people, so they can have anywhere from 0 people to 650 people at the game.
The domain would be [0,650]
Answer:6.00
Step-by-step explanation:
yes
8. Is it possible for a piece of cork to have a greater density than a piece of rock? Describe why or
why not.
Answer:
No
Step-by-step explanation:
The rock has more mass and will therefore always have greater density than a piece of cork. This is also due to the atomic structure of the elements, molecules, and compounds that make it up.
what is the image of (-2, 3) after a rotation of 90 degrees counterclockwise?
Answer:
-3,-2
Step-by-step explanation:
The diagram represents three statements about animals at the zoo: p, q, and r. For how many animals is (p ∨ q) ∧ r true? 15 17 20 22
Answer:
It is 15
Step-by-step explanation:
A. on edge
Total number of animals for which (p ∪ q) ∩ r is true is 15.
What is meant by union of sets?
The set that contains all the elements present in both sets is the union of the two supplied sets.
Here,
It is given that,
Set p is {2, 5, 8, 9}
Set q is {2, 4, 7, 5}
Set r is {2, 4, 6, 9}
The union of p and q, which includes all creatures that are in p, in q, or in both p and q, is known as p ∪ q.
p ∪ q = {2, 4, 5, 7, 8, 9}
The creatures that must be present in both (p and q) and r are contained in (p ∪ q) ∩ r.
So, (p ∪ q) ∩ r = {2, 4, 9}
Therefore,
2 + 4 + 9 = 15
Hence,
Total number of animals for which (p ∪ q) ∩ r is true is 15.
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Attaching the image file here.
Factor (x^2+y^2-z^2)^2-4x^2y^2 as the product of four polynomials of degree 1, each of which has a positive coefficient of x.
Is the ratio 5:6 equivalent to 3:4
We can write the given expression as -
(x² + y²)(x² + y²- 2z²) + z² - 4x²y²
What is factorization?Factors of a number are numbers that divide evenly into another number. Factorization writes a number as the product of smaller numbers
Given is the expression -
{(x² + y²) - z²}² - 4x²y²
(x² + y²)² + z² - 2(x² + y²)z² - 4x²y²
(x² + y²) {(x² + y²) - 2z²} + z² - 4x²y²
(x² + y²)(x² + y²- 2z²) + z² - 4x²y²
Therefore, we can write the given expression as -
(x² + y²)(x² + y²- 2z²) + z² - 4x²y²
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A bakery sold a total of 500 cupcakes in a day, and 200 of them were mocha flavored. What percentage of cupcakes sold that day were mocha flavored?
Answer:
20%
Step-by-step explanation:
200 mocha flavored cupcakes of the 500 cupcakes were sold. (200/500).
Reduce to 2/5. Then multiply 20/20 to 2/5 and get 20/100.
20% cupcakes were mocha flavored.
The logic behind me rewriting the fraction to 20/100 was because 200/500 could easily be divided be 100 and 5.
Answer:40%
Step-by-step explanation: 200/500=?/100
2/5 x 20/20= 40/100
40%
The area of an 13-cm-wide rectangle is 286 cm^2. What is its length?
20 points and brainliest to whoever has the correct answer in the next 2 hours
Answer:
L = 22 cm
Step-by-step explanation:
Area of a triangle = L x W
where W = 13 cm
Area = 286 cm²
A = L x W
286 = L x 13
L = 286 / 13
L = 22 cm
proof:
286 = 22 x 13
286 = 286 --- ok
Select the correct answer from each drop-down menu. The product of sin 30° and sin 60° is same as the product of and .
The product of sin 30 and sin 60 is same as the product of cos 60 degrees tan 30 degrees and cos 30 degrees tan 60 degrees .
The product of sin 30° and sin 60° is same as the product of cos 60° and cos 30°.
Sine and cosine of complementary anglesFrom the complementary angle theorem, we have that
sinθ = cos (90° - θ)
and
cosθ = sin (90° - θ)
By applying the theorem,
sin 30° = cos (90° - 30°)
∴ sin 30° = cos 60°
Also,
sin 60° = cos (90° - 60°)
∴ sin 60° = cos 30°
Thus, sin 30° = cos 60° and sin 60° = cos 30°
Hence, the product of sin 30° and sin 60° is same as the product of cos 60° and cos 30°.
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Find the coordinates of the other endpoint of the segment, given its midpoint and one endpoint. (Hint: Let (w.y) be the unknown endpoint. Apply the midpoint formula, and solve the two equations for x and y)
midpoint (2.2), endpoint (1. - 2)
The other endpoint is
Answer:
(3,6)Step-by-step explanation:
Given two coordinates (x₁,x₂) and (y₁,y₂), their midpoint (w,y) is expressed as:
M(X,Y) = [tex](\dfrac{x_1+w}{2}, \dfrac{y_1+y}{2})[/tex]
From the question, we are given the midpoint (X,Y) to be (2,2) and one endpoint as (1, -2) and we are to find the other end point expressed as (w,y). From the coordinates given, i can be seen that X = 2, Y =2, x₁ = 1 and y₁ = -2
Substituting the given end points into the given formula to get the other end points, we will have;
[tex]X = \dfrac{x_1+w}{2} \\2 = \dfrac{1+w}{2} \\cross\ multiply\\4 = 1+w\\w = 4-1\\w = 3[/tex]
Similarly;
[tex]Y = \dfrac{y_1+y}{2} \\2 = \dfrac{-2+y}{2} \\cross\ multiply\\4 = -2+y\\y = 4+2\\y = 6[/tex]
Hence the other endpoint (w, y) is (3,6)
A floor 5 m by 20 m is covered by square tiles of side 20 cm. How many tiles are needed
Answer:
number of tiles needed = 2500 pieces
Step-by-step explanation:
Floor area = 5m x 20m = 100 m²
area of 1 square tile = 20cm x 20cm = 400 cm² ---- convert to m²
400 cm² x [tex]\frac{1 m^{2} }{100^2 cm^2}[/tex] = 0.04 m²
To get the number of tiles required to cover the floor area 5x20 = 100 m²
just divide it by the area of tile.
so Number of tile req'd = 100 / 0.04 = 2500
therefore,
the number of tiles needed = 2500 pieces
A square has an area of 150 square centimeters. Which of the
following measures is closest to the length of one of its sides?
11.8 cm
B
12.2 cm
C 12.7 cm
D
13.5 cm
Answer:
C) 12.2 cm
Step-by-step explanation:
To find the area of a square, you multiply length and width, which for a square, are the same. So to find the length of one of its sides, you have to take the square root of the area.
[tex]L^{2} = 150\\\\L=\sqrt{150} \\L= 12.2\\[/tex]
Mohammed and luigi were printing calendars. Mohammed used 3 1/2 ink cartridges while Luigi used 1 3/4 ink cartridges. How many more ink cartridges did Mohammed use than Luigi
Step-by-step explanation:
Mohammed used 3 1/2 ink cartridges = [tex]\dfrac{7}{2}[/tex]
Luigi used 1 3/4 ink cartridges = [tex]\dfrac{7}{3}[/tex]
It means that Mohammed used more ink cartridges than Luigi. The more amount is calculated as follows :
[tex]\dfrac{7}{2}-\dfrac{7}{3}=\dfrac{7\times3-7\times 2}{6}\\\\=\dfrac{21-14}{6}\\\\=\dfrac{7}{6}[/tex]
So, [tex]\dfrac{7}{6}[/tex] more ink cartridges Mohammed used than Luigi.
Answer: Switch steps 2 and 3.
explanation: Have a good day stay safe
I need help! Please help asap this was supposed to be due yesterday!
Effects of Shifting, Adding, and Removing Data
3. Kay owns a small business that employees 6 other people. Kay makes $90,000 per year, and the other 6 employees make between $45,000 and $60,000 per year. Kay decided to increase her salary by $20,000 and leave the rest of the salaries the same. How will increasing her salary affect the mean and median?
• Both the mean and median will increase .
• The mean will increase, and the median will stay the same.
• The median will increase, and the mean will stay the same.
• The mean will increase, and the median will decrease.
Answer: B) The mean will increase and the median will stay the same.
======================================================
Explanation:
Let's look at a small example of why this works.
Suppose that we had the set of 5 items {1,2,3,4,5}. The value 3 is right in the middle so this is the median. The mean is also 3 because adding all the values gets us 15 and then we divide over 5 (the number of items in the set) to get 15/5 = 3.
For any symmetric set of data like this, the mean and median are the same value.
Now let's change that last item 5 to something larger. Let's bump it up to 10
The new data set is {1,2,3,4,10}. The median is still 3 as it's still in the middle. But now the mean is (1+2+3+4+10)/5 = 20/5 = 4. The old mean was 3, and the new mean is 4. So we have the mean increased thanks to that 5 increasing to 10.
We could increase 10 to 20 getting {1,2,3,4,20}. The median is still the same. The mean is now (1+2+3+4+20)/5 = 30/5 = 6. So we've increased the mean again. This process can be continued on for as long as you like.
The outliers to the right hand side effectively pull on the mean in a similar analogy to how gravity pulls on an object. So this is one way to remember that the mean is effected by outliers. The median only cares about being in the middle so that's why it doesn't change. If we changed the number of items in the data set, then it's a different story. However, Kay is only changing her salary rather than bring on a new hire (or two).
So that small example can be applied to Kay's situation even though the numbers are much larger. The median stays the same, but Kay's (much) higher salary pulls on the mean to make it larger than it should be. This is often why a trimmed mean is used when looking at centers of data sets. For data sets that have very large outliers, the median is the more reliable measure of center.
Your school is 4 miles east and 1 mine south of your apartment there is a park 3 miles east and 4 miles south of your apartment estimate the distance between the park and your school
The estimated distance between the park and your school is 5 miles.
Here,
To estimate the distance between the park and your school, we can use the Pythagorean theorem, as the distance forms a right-angled triangle with the school, apartment, and park as its vertices.
Let's label the points as follows:
S = School
A = Apartment
P = Park
Given:
School (S) is 4 miles east and 1 mile south of the apartment (A).
Park (P) is 3 miles east and 4 miles south of the apartment (A).
Now, we have two right-angled triangles:
The triangle formed by S, A, and P. This is the triangle for which we want to estimate the distance between the school and the park.
The triangle formed by A, S, and P.
Since both triangles share the side AS (4 miles east), we can use the Pythagorean theorem for the triangle ASP to find the distance between the school and the park.
The Pythagorean theorem states that for a right-angled triangle, the square of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the other two sides.
In this case, let's represent the distance between the school and the park as d (the hypotenuse), and the other two sides as 3 miles (east) and 4 miles (south).
Using the Pythagorean theorem:
[tex]d^2 = 3^2 + 4^2\\d^2 = 9 + 16\\d^2 = 25\\[/tex]
Now, take the square root of both sides to find d:
d = √25
d = 5
So, the estimated distance between the park and your school is 5 miles.
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