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2 years ago

Write an equation with an exponent for 39mm=0.039

Mathematics

1 answer:

klio [65]2 years ago

4 0

Answer:

An equation would be 39 divided by 10^3= 0.039

Step-by-step explanation:

Hope this helps!! ;-)

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exis [7]

Answer:

Part 1) The length of the longest side of ∆ABC is 4 units

Part 2) The ratio of the area of ∆ABC to the area of ∆DEF is $\frac{1}{100}$

Step-by-step explanation:

Part 1) Find the length of the longest side of ∆ABC

we know that

If two figures are similar, then the ratio of its corresponding sides is proportional and this ratio is called the scale factor

The ratio of its perimeters is equal to the scale factor

Let

z ----> the scale factor

x ----> the length of the longest side of ∆ABC

y ----> the length of the longest side of ∆DEF

$z=\frac{x}{y}$

we have

$z=\frac{1}{10}$

$y=40\ units$

substitute

$\frac{1}{10}=\frac{x}{40}$

solve for x

$x=(40)\frac{1}{10}$

$x=4\ units$

therefore

The length of the longest side of ∆ABC is 4 units

Part 2) Find the ratio of the area of ∆ABC to the area of ∆DEF

we know that

If two figures are similar, then the ratio of its areas is equal to the scale factor squared

Let

z ----> the scale factor

x ----> the area of ∆ABC

y ----> the area of ∆DEF

$z^{2}=\frac{x}{y}$

we have

$z=\frac{1}{10}$

$z^2=(\frac{1}{10})^2$

$z^2=\frac{1}{100}$

therefore

The ratio of the area of ∆ABC to the area of ∆DEF is $\frac{1}{100}$

3 0

2 years ago

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yan [13]

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2 years ago

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Which fraction has a terminating decimal as a decimal expansion 1/3 1/5 1/7 1/9

loris [4]

Answer:

Step-by-step explanation:

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2 years ago

If you bought a stock last year for a price of $124, and it has gone down 5.6% since then, how much is the stock worth now, TO T

pychu [463]

Answer:

124*0.9=111.6

Step-by-step explanation:

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3 years ago

When rolling two dice , there are blank different ways to roll at least one 4.

Ann [662]

Answer:

$3$

Step-by-step explanation:

These $3$ ways are:

The first die showing a 4 and the second die showing a different number
The second die showing a 4 and the first die showing a different number
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2 years ago

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