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3 years ago

Which expression is equivalent to 73 ⋅ 7−5? 72 77 1 over 7 to the 2nd power 1 over 7 to the 7th power

Mathematics

2 answers:

Rasek [7]3 years ago

7 0

Answer:

1/7^2

Step-by-step explanation:

The applicable rules of exponents are ...

(a^b)(a^c) = a^(b+c)

a^-b = 1/a^b

Then your expression simplifies to ...

$7^3\cdot 7^{-5}=7^{3-5}=7^{-2}=\boxed{\dfrac{1}{7^2}}$

soldier1979 [14.2K]3 years ago

6 0

Answer:

The answer is 1/7^2

Step-by-step explanation:

I took the test lol

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the ice cream shop sold 8 vanilla cones, 15 strawberry cone, and 25 chocolate cones in one evening. ehat percent of the cones so

dsp73

Answer: 31.25%

Step-by-step explanation: 8 + 15 + 25 = 48, then 15 / 48 = 0.3125. that's 31.25%

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3 years ago

What are the vertices of the resulting image abcse after a 90 counter clockwise rotation about the origin? Write each as an orde

Dmitriy789 [7]

Answer:

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Step-by-step explanation:

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3 years ago

1/8 + 1/4 estimate the sum or difference

stepladder [879]

When estimating you need to round up or down to find something close to the real answer. Here we would round 1/8 down to 0 and 1/4 down to 0. So 0+0=0.

Your estimated answer is 0

The real answer is 3/8 so 0 is close and that is the point in estimating

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3 years ago

A cylindrical well is 15 meters deep and has a diameter of 1.6 meters. Approximately how many cubic meters of soil were dug out

Lisa [10]

We can dig out the soil from the well equal to volume of well.

Height(h) of well is = 15 meters.

Diameter = 1.6 meters.

So radius(r) = $\frac{1.6}{2} = 0.8$ meter.

As well in cylindrical shapes.

So volume of well = $\pi r^2h$
                               = $\pi * (0.8)^2 * 15$
                                $= 9.6 * \pi$
In general $\pi = 3.14$

So volume of well is = $9.6 * 3.14$
   $= 30.144$ cubic meter.

So we can dig out 30.144 cubic meter soil from well.

5 0

3 years ago

Joe had a balance of $34 on his credit card. He bought a sandwich and charged $40 on his credit card. 1a.) Write an equation tha

sergejj [24]

Answer:

Kindly check explanation

Step-by-step explanation:

Given that:

Credit card balance = $34

Amount of sandwich purchased = $40

The cost of sandwich purchased us added to the Initial credit card balance as the balance in a credit card is amount owed.

Hence it could be interpreted as though Joe has made purchases which amounts to $34 with his card before purchasing sandwich that costs $40

Hence; new card balance :

(Intial card balance + cost of sandwich)

$34 + $40 = $74

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3 years ago