3 years ago

What is the answer to this repeated subtraction problem

Mathematics

1 answer:

LenaWriter [7]3 years ago

5 0

Answer:

19.875

Step-by-step explanation:

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Jackie has a jar of 54 coins consisting of dimes and quarters. If she has a total of $10.05, how many dimes does she have?

Jlenok [28]

31 dimes and 23 quarters

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4 years ago

A tanker truck has overturned and is spilling oil onto the highway. Amazingly, the region covered by the oil spill maintains a p

Sav [38]

Answer:

The radius of the oil spill growing at 2 feet per minute

Step-by-step explanation:

Area of a circle is

$A=\pi r^2$

Differentiating A with respect to r,

$\dfrac{dA}{dr} = 2\pi r$

When $A=100\pi$ ,

$100\pi = \pi r^2$

$r = 10$

The rate of growth of the spill is

$\dfrac{dA}{dt} = 40\pi$

This is equivalent to

$\dfrac{dA}{dt} = \dfrac{dA}{dr} \times \dfrac{dr}{dt}$

$\dfrac{dr}{dt} = \dfrac{dA}{dt}/\dfrac{dA}{dr} = \dfrac{40\pi}{2\pi r} = \dfrac{20}{r}$

$\dfrac{dr}{dt} = \dfrac{20}{10} = 2$

7 0

3 years ago

Read 2 more answers

Help help help help (-_-)

g100num [7]

Answer:

Step-by-step explanation:

4 0

3 years ago

Please help and can you sow work.

Anvisha [2.4K]

First thing solve for missing side using Pythagorean theorem 20^2=16^2+a^2 then solve for a and we get a=12. Then we can use Toa which means tan=o/a so if we plug in those values we get tan(theta)=16/12

5 0

3 years ago

Helpp!! Thank you! Take care!!

alina1380 [7]

Answer:

B or $12.50

Step-by-step explanation:

To get the answer, you have to solve x from the equation 4.5x = 56.25

To solve, you have to divide 4.5 from each side, making the equation look like,

x = 12.5

Hope this helps!!

Plz let me know if I'm wrong...

7 0

3 years ago

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