Answer:
(c+3b)/8 = a
Step-by-step explanation:
c= 8a-3b
Add 3b to each side
c+3b= 8a-3b+3b
c+3b = 8a
Divide each side by 8
(c+3b)/8 = 8a/8
(c+3b)/8 = a
TIMED QUESTION!!!!!!!
Answer: (2 1/2, 0) (the last option)
Step-by-step explanation:
I guess the function is:
f(x) = (2 1/2) - (3 1/2)*x
now, the rule for f-1(x) that we know is:
f-1( f(x) ) = x.
So if we want to find the x-intercept of f-1(x), we must evaluate it in f(0)
f-1(f(0)) = 0.
And we have that f(0) = (2 1/2) - (3 1/3)*x = 2 1/2
This means that the x-intercept of f-1(x) will be when x= 2 1/2, so the intercept is:
(2 1/2, 0)
Multiplying a number by which of the following would result in a smaller number?
O 100
O 101
O 102
10-1
Answer:
10^(-1)
Step-by-step explanation:
Recall that a value that is multiplied by a number that is between 0 and 1 will result in a number that is smaller than the original number.
the first 3 are all greater than 1, hence will result in a greater value if when multiplied with another number.
The last one is 10^(-1) = 0.1
Anything multiplied by 0.1 will result in a value that is 1/10th of the original value.
Hence this is the answer.
Answer:
10/\-1 is correct
Step-by-step explanation:
The amount of a certain medication remaining in the bloodstreamt
hours after taking the medicine is modeled by the equation M(t) = -4**
5x2 + 3x +18. Package directions recommend taking a second dose 4-6
hours after the initial dose,
Answer:
45, 46, 33, 0, 6
Step-by-step explanation:
Old Mc Donald raises ducks and cows. The animals have a total of 100 heads and 354 feet. How many ducks and how many cows does Old Mc Donald have?
Answer:
The number of ducks Old Mc Donald raises are 23 and the number of cows Old Mc Donald raises are 77.
Step-by-step explanation:
We are given that Old Mc Donald raises ducks and cows. The animals have a total of 100 heads and 354 feet.
Let the number of ducks Old Mc Donald raises be 'x' and the number of cows Old Mc Donald raises be 'y'.
So, according to the question;
The first condition states that the animals have a total of 100 heads, that means;[tex]x+y=100[/tex]
[tex]x=100-y[/tex] -------------------- [equation 1]
{because one head of a duck and one head of cow}
The second condition states that the animals have a total of 354 feet, that means;[tex]2x+4y=354[/tex]
[tex]x+2y=177[/tex] --------------- [equation 2]
{because there are two feet of a duck and four feet of cow}
Now, putting the value of x in equation 2 we get;
[tex]100-y+2y=177[/tex]
[tex]y=177-100[/tex]
y = 77 cows
Putting this value of y in equation 1 we get;
x = 100 - y
x = 100 - 77 = 23 ducks
Hence, the number of ducks Old Mc Donald raises are 23 and the number of cows Old Mc Donald raises are 77.
Solve the following simultaneous equations : with the help of steps
1. x + 2y = 1, 3x - y = 17
Answer:
x = 5, y = -2
Step-by-step explanation:
Given equations:
x + 2y = 13x - y = 17From the first equation we get:
x = 1 -2ySubstitute x in the second equation, find y:
3x - y = 173*(1-2y) - y = 173 - 6y - y = 17-7y = 17 - 3-7y = 14y = -14/7y = -2Find x:
x = 1 - 2y x = 1 - 2*(-2)x = 1 + 4x = 5Write the equation of the line that passes through the points (-7, -5) and
(-7,–7). Put your answer in fully reduced point-slope form, unless it is a vertical or
horizontal line.
Answer:
vertical
Step-by-step explanation:
Horatio went to the movies and spent $15 on his ticket and snacks. If the snacks cost $8, how much did his ticket cost? -Answer?
Answer:
$7
Step-by-step explanation:
t = ticket price
We know the total cost of the ticket and snacks was $15, and just the snacks were $8 so:
t + $8 = $15
To find the amount of the ticket, subtract $8 from each side
t + $8 - $8 = $15 - $8
The $8 cancels and you're left with
t = $7
So the ticket costs $7
The remaining cost after the snack cost is the cost of the movie ticket and it is $7.
What is subtraction?To subtract in mathematics is to take something away from a group or a number of objects.
In a different sense, subtraction refers to a mathematical procedure where two values will be subtracted to produce a new value.
Total spent = cost of snacks + cost of a movie ticket
Given that,
Total spent = $15
Cost of snacks = $8
So,
15 = 8 + cost of movie ticket
Cost of movie ticket = 15 - 8 = $7
Hence "The remaining cost after the snack cost is the cost of the movie ticket and it is $7".
For more about subtraction,
https://brainly.com/question/1927340
#SPJ2
6 tenths+3 thousandths
A city council consists of 8 members. Of the 3 men on the committee, 1 has a bachelor's degree and the other 2 have master's degrees. Of the 5 women on the committee, 4 have bachelor's degrees and 1 has a master's degree. A member is chosen at random to take notes at a meeting. What is the probability that the committee member has a bachelor's degree?
Answer:
5/8
Step-by-step explanation:
1 man, 4 women out of 8 people total
What is the solution for this inequality? 8x ≤ -32
Answer:
x≤-4
Step-by-step explanation:
There is one very important exception to the rule that multiplying or dividing an inequality is the same as multiplying or dividing an equation. Whenever you multiply or divide an inequality by a negative number, you must flip the inequality sign.
8x≤-32
1. Divide both sides by 8
If their is 300 unicorns and 200 dragons and 50 dragons fly away then 30 unicorns walk away how many are of each left?
Pls help.
Answer:
If 30 unicorns out of 300 walk away then it will be 300-30=270 unicorns left.
If 50 dragons fly away out of 200 then it will be 200-50=150.
Therefore there are 270 unicorns and 150 dragons left.
I hope this helps you...Thank you...
How do I express 32 kilometeters in miles?
Answer:
19.84 Miles
give or take
Step-by-step explanation:
1 km is .62 miles
.62 x 32 = 19.84
Answer:
19.88 miles
Step-by-step explanation:
The line y= -x + 3 best models which of the following scatter plots?
Answer:
a
Step-by-step explanation:
Since we have a negative slope, that means the correlation for the scatter plot also has to be negative.
Since the only scatter plot that has a negative correlation is graph A, a is our answer.
Find the midpoint of R(2,2) and S(-3,6)
Answer: (-0.5, 4)
Step-by-step explanation:
Midpoint formula: [tex](\frac{x1+x2}{2} ,\frac{y1+y2}{2} )[/tex]
(x1, x2)=(2, -3)
(y1, y2)=(2, 6)
-----------------------------------------------
[tex](\frac{x1+x2}{2} ,\frac{y1+y2}{2} )[/tex]
=[tex](\frac{2-3}{2} ,\frac{2+6}{2} )[/tex]
=[tex](\frac{-1}{2} ,\frac{8}{2} )[/tex]
=[tex](-0.5, 4)[/tex]
Hope this helps!! :)
Please let me know if you have any question or need further explanation
Answer:
[tex]M=(-\frac{1}{2},4)[/tex]
Step-by-step explanation:
The midpoint formula is given by:
[tex]M=(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})[/tex]
Let (2,2) be x₁ and y₁ and let (-3,6) be x₂ and y₂. Therefore:
[tex]M=(\frac{2+-3}{2},\frac{2+6}{2})[/tex]
Simplify:
[tex]M=(-\frac{1}{2},\frac{8}{2})\\M=(-\frac{1}{2},4)[/tex]
Determine whether each ordered pair is a solution of y = x+3. (2,5) (4,6) (5,8) (3,7)
Answer:
(2,5) and (5,8)
Step-by-step explanation:
you can just plug in the numbers to get your answer and if two numbers aren't the same then its not a solution
example: (2,5)
5 = 2 + 3
5 = 5
5 does equal 5 making it a solution because it makes sense right?
example: (4,6)
6 = 4 + 3
6 = 7
this isn't a solution because six doesn't equal 7
Answer:
[see below]
Step-by-step explanation:
[tex]y=x+3[/tex]
(2,5):[tex]5=2+3\\\\\boxed{5=5}[/tex]
The ordered pair is a solution.
(4,6):[tex]6=4+3\\\\\boxed{6\neq7}[/tex]The ordered pair is not a solution.
(5,8):[tex]8=5+3\\\\\boxed{8=8}[/tex]The ordered pair is a solution.
(3,7):[tex]7=3+3\\\\\boxed{7\neq 6}[/tex]
The ordered pair is not a solution.
Hope this helps.
If 3x - 8= -2, find the value of x - 6.
Answer:
x-6 = -4
Step-by-step explanation:
3x - 8= -2
Add 8 to each side
3x - 8+8= -2+8
3x = 6
Divide by 3
3x/3 = 6/2
x =2
We want to find x-6
2-6 = -4
Answer: - 4
Step-by-step explanation:
3x - 8 = -2
3x = -2 + 8
3x = 6
x = 6/3
x = 2
so, therefore x - 6 => 2 - 6 = -4
d) Make a is the subject of the formula, ab + bc = ad
e) Define Pythagoras' Theorem.
Answer:
(D) ab + bc =ad
ab-ad = -bc
a(b-d) =bc
a = bc / b-d
(e) The Pythagoras Theorem states that in a Right angled triangle the {hypotenuse}^2 = {opposite}^2 + {adjacent}^2
Step-by-step explanation:
is -6/11 a rational or irrational number?
Answer: I am pretty sure it is a rational number!
Step-by-step explanation:
25=19+k. What’s the answer?
Answer:
k=6
Step-by-step explanation:
25=19+k
Subtract 19 from each side
25-19=19-19+k
6 = k
Answer:
k = 6
Explanation:
to find the value of k in the equation provided, you must subtract nineteen from both sides. this will isolate the variable.
25 = 19 + k
25 - 19 = 19 - 19 + k
6 = k
k = 6
therefore, the value of the variable k in 25 = 19 + k is 6.
Help ASAP it’s either
68degrees
110 degrees
136 degrees
or 112 degrees
Answer:112
Step-by-step explanation: Line SW is 180 degrees since it is a straight line. Subtract angle TBU 18 and angle UBW 50 from line SW 180 to get angle SBU which is 112.
-30=5k+5 solve for k
Answer:
The answer is -7
5k=-30-5.
5k=-35.
k= -7.
Hi there! Hopefully this helps!
---------------------------------------------------------------------------------------------------
Answer: [tex]\boxed{k = -7}[/tex] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~[tex]-30=5k+5[/tex]
Swap sides so that all variable terms are on the left hand side.
[tex]5k+5=-30[/tex]
Subtract 5 from both sides.
[tex]5k=-30-5[/tex]
Subtract 5 from −30 to get −35.
[tex]5k=-35[/tex]
Divide both sides by 5.
[tex]k=\frac{-35}{5}[/tex]
Divide −35 by 5 to get, you guessed it, -7!You can also do "5(-7) + 5 = ??" For proof.
is pie a natural number?
Nope
Step-by-step explanation:
Pi is an irrational number because it can not be expressed by a simple fraction.
Answer: No it's a rational number
Step-by-step explanation:
Marie goes to the clothing store. Her purchases equal $89.25. The sales tax is 8%. How much tax does she pay?
A $7.14
B $7.86
C S71.40
D S78.60
Answer: A. $7.14
Step-by-step explanation:
price × percentage of sales tax=amount of tax
89.25 × 8%=$7.14
Hope this helps!! :)
Please let me know if you have any question
Why is the sum of a rational number and a irrational number always irrational
Answer:
A rational number is a number able to be put into a fraction, an irrational number is not able to be. Therefore, when adding the two, the rational and the irrational will be irrational. For example, 2 is a rational number, and 1.8903 is irrational. If you add the two, you will get 3.18903, which is unable to be put into a fraction.
If B is the midpoint of AC, AC=CD, AB=3x+4, AC=11x-17, and CE=49, find DE.
Answer:
11
Step-by-step explanation:
AB = 3x + 4 and AC which is twice of AB is equal to 11x - 17
2 (3x + 4) = 11x - 17
6x + 8 = 11x - 17
8 + 17 = 11x - 6x
25 = 5x
5 = x
AC = CD = 11x - 17 ➡ 11×5 - 17 = 38
CD = 38 and DE = 49 - 38 = 11
Can someone help me with these word problems?
A new community sports complex is being build in Madison. The perimeter of the rectangular playing field is 466 yards. The length of the field is 7 years less than quadruple the width. What are the dimensions of the playing field?
Answer:
The dimensions of the field is 185 yards by 48 yards
Step-by-step explanation:
Here, we are interested in calculating the dimensions of the field.
Let the width of the field be x yards
From the question, we are made to know that the length of the field is 7 yards less than quadruple ( 4 times) the width
So mathematically, the length of the field will be ;
(4x -7) yards
The perimeter of the field mathematically is:
2(l + b)
Thus;
2(x + 4x- 7) = 466
2(5x -7) = 466
divide both side by 2
5x - 7 = 466/2
5x - 7 = 233
5x = 233 + 7
5x = 240
x = 240/5
x = 48 yards
Length of field is; 4x -7 = 4(48) -7 = 192 - 7 = 185 yards
A comparison of two quantities with similar units, by division is called: *
1.ratio table
2.rate
3.ratio
4.origin
Fill in the blank with a constant, so that the resulting quadratic is the square of a binomial. \[x^2 + \dfrac{4}{5}x + \underline{~~~~}\]
Answer:
4/25Step-by-step explanation:
Given the incomplete quadratic equation [tex]\[x^2 + \dfrac{4}{5}x + \underline{~~~~}\][/tex], we are to complete it so that the result will be the square of a binomial. To do that, we will use the completing the square method.
Completing the square method is a way of completing a quadratic equation by solving for a constant to add that will make the quadratic equation a perfect square of a binomial.
To get the constant term using the method, we will take the square of the alf of the coefficient of x in the equation given.
Coefficient of x = 4/5
half of the coefficient of x = 1/2(4/5)
half of the coefficient of x = 4/10 = 2/5
Square of the half of the coefficient of x = (2/5)²
Square of the half of the coefficient of x = 4/25
Hence the constant that we will use to complete the equation to make if a square of a binomial is 4/25
The equation will become:
[tex]= \[x^2 + \dfrac{4}{5}x +\dfrac{4}{25} \\\\= \[x^2 + \dfrac{4}{5}x +(\dfrac{2}{5})^2\\\\= (x +\dfrac{2}{5})^2[/tex]
Hence the constant value that will make the resulting quadratic the square of a binomial is 4/25
Answer:
4/25
Step-by-step explanation:
Suppose the quadratic is the square of the binomial $x+c.$ We have $(x+c)^2 = x^2+2cx + c^2.$ Comparing the linear term of $x^2 + 2cx+c^2$ to the linear term of $x^2 + \frac{4}{5}x + \underline{~~~~},$ we have $2c = \dfrac{4}{5},$ so $c = \dfrac{2}{5}.$ Therefore, the constant term is
\[c^2 = \left(\dfrac{2}{5}\right)^2 = \boxed{\frac{4}{25}}.\]
i need help , what’s the answer ?
Answer:
D,
Step-by-step explanation:
that's because you only factorise when you have a common factor, ax-3b cannot be factorised because they have nothing in common so it is wrong to use x to factorise it. If you want to be sure that it is not factorisable, try expanding it and you'll see that you will not get the same answer.