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3 years ago

Please help me with this!! Thank you.

Mathematics

1 answer:

jolli1 [7]3 years ago

3 0

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Amy, a senior, bought a car last year so that she could drive to school on the days when she needed to stay after class for prac

Kisachek [45]

Answer:

25.8%

Step-by-step explanation:

We have been given that Amy spent $155 last year for gas. This year she spent $195. We are asked to find the inflation rate.

We will use inflation rate formula to solve our given problem.

$\text{Inflation rate}=\frac{\text{CPI}_{x+1}-\text{CPI}_{x}}{\text{CPI}_{x}}\times 100$

$\text{Inflation rate}=\frac{195-155}{155}\times 100$

$\text{Inflation rate}=\frac{40}{155}\times 100$

$\text{Inflation rate}=0.2580645161290323\times 100$

$\text{Inflation rate}=25.80645161290323\\\\\text{Inflation rate}\approx 25.8$

Therefore, the inflation rate is approximately 25.8%.

4 0

4 years ago

Use Order of Operations. (2/5 x 30) x 6 to the second power - 3 to the second power

SIZIF [17.4K]

Answer:

Step-by-step explanation:

(2/5 * 30) * 6^2 - 3^2 Reduce 2/5 * 30

180 * 6^2 - 3^2 Raise the bases of the power

180 *36 - 9 Multiply 36 and 180

6480 - 9 Subtract 9

6471

5 0

4 years ago

What is 11 times one fourth

max2010maxim [7]

Answer: 2 and three-fourths (2 3/4)

Step-by-step explanation:

11 * 1/4

1/4 = 0.25

0.25 * 11 = 2.75

.75 = 3/4

2.75 = 2 3/4

6 0

4 years ago

Read 2 more answers

( Easy ) Help me with this math problem

Ede4ka [16]

Just say Avery owns 5 of those marbles. The fraction will be 5/10 marbles which is equivalent to 1/2.

5 0

4 years ago

Read 2 more answers

What is the equation of the circle with: center (5, 7) and point on the circle: (-2, 8)

Elis [28]

Answer:

$(x-5)^2+(y-7)^2=50$

Step-by-step explanation:

Hi there!

Equation of a circle: $(x-h)^2+(y-k)^2=r^2$ where the circle is centered at $(h,k)$ and r is the radius

Plug in the center (5,7)

$(x-5)^2+(y-7)^2=r^2$

Plug in the given point (-2,8) to solve for r²

$(-2-5)^2+(8-7)^2=r^2\\(-7)^2+(1)^2=r^2\\49+1=r^2\\50=r^2$

Therefore, r² is equal to 50. Plug this back into $(x-5)^2+(y-7)^2=r^2$

$(x-5)^2+(y-7)^2=50$

I hope this helps!

5 0

3 years ago