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3 years ago

4 quarters are equal in value to 20 nickels.

Mathematics

1 answer:

KatRina [158]3 years ago

5 0

Answer:

1 is 30, 2 is 70, 3 is 5, 4 is 5. It means 5 nickels equals 1 quarter.

Step-by-step explanation:

A nickel is 5 cent. A quarter is 25 cent. So 1 quarter is 5 nickels.

So, 6 quarters is 30 nickels. 14 quarters is 70 nickels.

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Write 64,120 in scientific notation

Sladkaya [172]

The answer would be 6.412 × 10^4

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3 years ago

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Which is the simplified form of (9c^-9)^-3 b 1/729 c^27

rosijanka [135]

ANSWER

$(9 {c}^{ - 9} )^{ - 3}=\frac{{c}^{ 27} }{729}$

EXPLANATION

The given expression is

$(9 {c}^{ - 9} )^{ - 3}$

Recall that:

$({a}^{m} )^{n} = {a}^{mn}$

We use the law of exponents to get

$(9 {c}^{ - 9} )^{ - 3} = 9^{ - 3} {c}^{ - 9 \times - 3}$

Let us multiply in the exponents to get:

$(9 {c}^{ - 9} )^{ - 3} = 9^{ - 3} {c}^{ 27}$

Recall again that:

${a}^{ - m} = \frac{1}{ {a}^{m} }$

This implies that:

$(9 {c}^{ - 9} )^{ - 3} = \frac{1}{ {9}^{ 3} } \times {c}^{ 27}$

We expand the power to get:

$(9 {c}^{ - 9} )^{ - 3} = \frac{1}{9 \times 9 \times 9} \times {c}^{ 27}$

$(9 {c}^{ - 9} )^{ - 3}=\frac{1}{729} \times {c}^{ 27}$

We multiply out to get:

$(9 {c}^{ - 9} )^{ - 3}=\frac{{c}^{ 27} }{729}$

7 0

3 years ago

If EG = 28 and F is the midpoint of segment EG, the length of EF = E F. G

valina [46]

If line segment EF is 28 and F is halfway through the line, then segment EF will be half of 28. So segment EF=14

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2 years ago

Find the value of the expression 4a^4 − 2b^2 + 40 when a = 2 and b = 7

Effectus [21]

Answer:6

Step-by-step explanation:

4(2)^4 − 2(7)^2 + 40

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Veseljchak [2.6K]

V = pi * r^2 *h

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V = pi * 7^2 *4

V = pi* 49*4

pi is approximated by 3.14 or 22/7

V = 22/7 * 49 * 4

V = 616 units ^3

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3 years ago

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