Mathematics High School

The cost of purchasing gasoline varies directly with the number of gallons purchased. Kali paid $52.90 for 23 gallons of gas. What is the direct variation equation that relates y, the cost of a gasoline purchase, to x the number of gallons?

Answers

Answer 1

Answer:

y = 2.3x

Step-by-step explanation:

y = kx  

52.9 = 23x

52.9 ÷ 23 = x

x = 2.3

Related Questions

what is
5/8 dived by 6

Answers

Answer:

3.75

Step-by-step explanation:

Answer:

5/6 divided by 6 = 5/48 or 0.1041666666 repeating

ava scored a 74% a 75% and an 80% on her first three math quizzes. What would she need to scorr on her 4th quiz to have an average of 80 percent ​

Answers

Answer:90

Step-by-step explanation:

a shop is having a sale all items are reduced by 30% work out the sale price of an item normally priced at £110

Answers

Answer:

77 us dollar

Step-by-step explanation:

because I used a calculator

Answer:

77

Step-by-step explanation:

7000000000000000000000 people ate 800 pizzas how many slices would each person get?

Answers

Hello! I may be wrong, I’m just going off the calculator LOL. I got:

5.6e+24

Hope this helps!

Arlinda is participating in her school reading
challenge. She reads 40 books in 6 months. If 26
of the books are fiction, then what percent of the
books that she read are non-fiction?

Answers

Answer:

14

Step-by-step explanation:

40-26=14 so therefore 14% of the books are non-fiction

Which of the following statements is true of the number 651.44

A) The 4 in the hundredths place has a value that is 10 times that of the 4 in the tenths place

B) The 4 in the tenths place has a value that is 10 times that of the 4 in the hundredths place

C) The 4 in the tenths place has a value that is 100 times that of the 4 in the hundredths place

D) The 4 in the tenths place has a value that is 1/10 that of the 4 in the hundredths place

Answers

Answer:

B

Step-by-step explanation:

Answer:

b

Step-by-step explanation:

8+4x≥12

x≤5

x≥1

x≤1

x≥5

Answers

its b
and I dont rlly feel like explaining so yea

What scale factor was applied to the first rectangle to get the resulting image?

Enter your answer as a decimal in the box.

Answers

Answer:

7.5/3= 2.5

i checked by doing

3*2.5 and it was equal to 7.5

the scale factor is 2.5

Answer:

2.5

Step-by-step explanation:

I divided 7.5 by 3 and got 2.5then to check my answer I multiplied 2.5 and 3 to get 7.5Hope this helps.

HELP HELP PLEASE!! SUPER CONFUSED!

Answers

Answer:

A. 0

B. 7

C. 3

D. 9

E.9

F.3

G.1

H.5

J.7

K.5

L.1

It's just a lot of reversing operations and seeing what fits, but if you have more you want to try, just make sure you remember borrowing and carrying numbers because they make a big difference.

The ratio of blue to red for a purple paint made by
28
mixing 24 oz of red with 28 oz of blue.

Answers

Answer:

28:24

Step-by-step explanation:

Blue to red is 28:24 or 7:6.

If y is a positive integer, for how many different values of y is [tex]\sqrt[3]{144\y}[/tex]a whole number?

Answers

Answer:

2

Explanation:

I'll explain later, it has to do with prime factors, and perfect cubes.

The two values of y that work are 18, and 144.

³√(144/18) = ³√(8) = 2 [whole number]

³√(144/144) = ³√(1) = 1 [whole number]

Bring 8/(a-x) to a denominator of x-a

Answers

Answer:

[tex]-\frac{8}{x-a}[/tex]

Step-by-step explanation:

[tex]\frac{8}{a-x}[/tex]

we can take common factor of -1 in the denominator

[tex]\frac{8}{-(-a+x)}=\frac{8}{-(x-a)}[/tex]

and now multiply and divide by -1

[tex]\frac{8}{-(x-a)}\cdot \frac{-1}{-1}=\frac{-8}{x-a}=-\frac{8}{x-a}[/tex]

IM GIVING BRAINLIEST PLEASE HELP
An elevator in a tall building is at a point 180 feet above the ground. The elevator descends at a rate of 12 feet per second. Write an equation that represents how far above the ground the elevator is after descending for x seconds.

Answers

y=-12x+180
I think this is the equation

Answer:

If you are looking for the answer it is.... y=-12x+180

Step-by-step explanation:

A triangle has interior angles of (x+5) (x-5) and (2x) what is the measure of the largest interior angle?

Answers

Answer:

90

Step-by-step explanation:

interior angles of all triangles add up to 180 degrees

180=x+5+x-5+2x

180=4x

45=x

plug back in to find largest angle

2 (45) = 90

Select the correct answer.
Which expression is equivalent to 13 square root 22b - 10 square root 22b, if b>0?

A. 23 square root 22b
B. 130 square root 22b
C. 3 square root b^2
D. 3 square root 22b

Answers

Given:

The expression is

[tex]13\sqrt {22b}-10\sqrt{22b}, b>0[/tex]

To find:

The equivalent expression.

Solution:

We have,

[tex]13\sqrt {22b}-10\sqrt{22b}[/tex]

Taking out common factors.

[tex]=(13-10)\sqrt {22b}[/tex]

[tex]=(3)\sqrt {22b}[/tex]

[tex]=3\sqrt {22b}[/tex]

The expression [tex]3\sqrt {22b}[/tex] is equivalent to the given expression.

Therefore, the correct option is D.

Write z = 5 + 2i as an ordered pair in an Argand diagram.

Answers

Answer:no hablo espanol

Step-by-step explanation:

Can somebody plz help solve for each question what x =?(only if u know how to do it) thanks :)

WILL MARK BRAINLIEST WHOEVER ANSWERS FIRST :DD!!

Answers

Answer:

7)x=11

8)x=16

9)n=12

10)m=13

11)n=8

12)m=3

Step-by-step explanation:

Answer:

7= 11. 8=16. 9=12. 10=13 11=8. 12=3

Step-by-step explanation:

7= 9+2=11

8=12+4=16

9=9+3=12

10=8+5=14

11=7+1=8

12=3+0=3

Will Mark Brainliest

Solve each system by elimination. Show your work

3х – 10 y = 14
3х – 9y = 15

Answers

Answer:

subtracting both equations

3x-10y=14

3x-9y=15

- - =-

_________

0-y=-1

y=1

then putting the value of y in first eqn

3x-10×1=14

3x=24

x=8

so x is 8and y is 1

The volume of a cylinder is 72 cm. If the radius is 3 cm, what is the height
of the cylinder?


A. 12 cm
B. 8 cm
C. 24 cm
D. 4 cm

Answers

C 24
72/3 =24
Explanation 72/3 = 24
B:8cm.
72 multiplied by 3.14= 3.14 times 9
226.08=3.14 times 9
226.08=28.26

Pls help me I don't understand this..... I will mark you as brainliest... the first one who answers

Answers

Answer:

it is the first answer because it want you to roll 5 first try

Simplify: −5(−4) + 13 =

Answers

Answer:

33

Step-by-step explanation:

-5(-4)= 20

20+13=33

Solve the Inequality! Please help me, answer needed FAST AND QUICK! Will give BRAINIEST 10 POINTS

Answers

Answer:

z (the arrow with teh line is pinting to the z) -4

Step-by-step explanation:

The ratio x: y is 1:3
Which of the following statements are correct?
A x is 1/3 of y
B y is 3/4 of (x + y)
x is 1/4 of y
y is 3/4 of x

Answers

Answer:

Option A

Step-by-step explanation:

x : y = 1 : 3

This can be also written as

[tex] \frac{x}{y} = \frac{1}{3} [/tex]

Multiplying y on both the sides

[tex] = > \frac{x}{y} \times y = \frac{1}{3} \times y[/tex]

[tex] = > x = \frac{1}{3} \times y[/tex]

Hence , x is one-third of y

Answer:

A and B

x is [tex]\frac{1}{3}[/tex] of y

AND

y is [tex]\frac{3}{4}[/tex] of (x+y)

Step-by-step explanation:

x:y is 1:3

=>  y is bigger than x

=>  y is 3x bigger than x

=>  y = 3 lots of x

=>  [tex]y =[/tex] [tex]3x[/tex]

=>  [tex]\frac{y}{3}[/tex] [tex]= x[/tex]

=>  [tex]\frac{1}{3} y[/tex] [tex]= x[/tex]

So x is [tex]\frac{1}{3}[/tex] of y

y is [tex]\frac{3}{4}[/tex] of (x+y)

If x = 1 and y = 3 (substitute in values)

=>  3 is [tex]\frac{3}{4}[/tex] of (4)

=>  3 is [tex]\frac{3}{4}[/tex](4)

=>  3 is ([tex]\frac{3}{4}[/tex]x4)

=>  3 = 3

Therefore, y is [tex]\frac{3}{4}[/tex] of (x+y) is true

So the answers are:

x is [tex]\frac{1}{3}[/tex] of y

AND

y is [tex]\frac{3}{4}[/tex] of (x+y)

Solve |x+4|=6 need help for a quiz

Answers

Answer:

down below

Step-by-step explanation:

set up two equations:

x + 4 = 6                    x + 4 = -6

solve both:

x = 2                          x = -10

plug it back in to the original equation:

|2 + 4| = 6.                 |-10 + 4| = -6

|6| = 6.                       |-6| = -6

6 = 6.                         since absolute value is always positive:

correct.                     |6| = -6

                                6 does not = -6

write both of these down if you need to show your work

~.❤~Please Answer~❤.~

Answers

Answer:

True

hope it helps!

Step-by-step explanation:

it’s true
hope this helped u clarify c:

Use the graph above to determine which of the following ordered pairs is in quadrant II.
( (-5-2)
(3.2)
(4.-1)
(-4, 6)
hellppp!!

Answers

The answer is (4,-1)

Can someone help me find the solution?

Answers

Answer:

Solution: y=2

need helpp asap its due by 11:59pm i will give brainliest

Answers

Answer:

The solution is (-6,2)

Step-by-step explanation:

Answer:

Fr

Step-by-step explanation:

In the figure shown, AB = 8 and AD = 5. What is BC?
BC=type your answer...

Answers

Answer:

AB = 8 and AD = 5

Ad=BC ( given in fig or as its is rectangle and sides of rectangle are equal )

so BC = 5

WILL GIVE BRAINLIEST PLEASE HELP ME

Answers

It would be negative (-)62

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