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3 years ago

The circumference of the Earth is approximately 25,000 miles. What is this number expressed in scientific notation?

Mathematics

2 answers:

OLEGan [10]3 years ago

8 0

The answer to this question is A

Roman55 [17]3 years ago

4 0

25,000 = 2.5 x 10^4

you have A and D same answer

answer
D) 2.5 x 10^4
A) 2.5 x 10^4

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2 years ago

F(x)=4x-3 find the inverse

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2 years ago

Changle. Show all work. Round each length to the nearest tenth and each angle to the

Sedaia [141]

Answer:

Part 1) $BC=12.2\ units$

Part 2) $m\angle A=55^o$

Part 3) $m\angle C=35^o$

Step-by-step explanation:

Part 1) Find AC

we know that

In the right triangle ABC of the figure

Applying the Pythagorean Theorem

$AC^2=AB^2+BC^2$

substitute the given values

$AC^2=7^2+10^2$

$AC^2=149\\AC=12.2\ units$

Part 2) Find the measure of angle A

we know that

In the right triangle ABC

$tan(A)=\frac{BC}{AB}$ ----> by TOA (opposite side divided by the adjacent side)

substitute the values

$tan(A)=\frac{10}{7}$

using a calculator

$m\angle A=tan^{-1}(\frac{10}{7})=55^o$

Part 3) Find the measure of angle C

we know that

In the right triangle ABC

$m\angle A+m\angle C=90^o$ ----> by complementary angles

substitute the given value

$55^o+m\angle C=90^o$

$m\angle C=90^o-55^o=35^o$

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2 years ago

What is additive inverse of the check?

elena-14-01-66 [18.8K]

Answer:

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3 years ago

Please help me someone

igomit [66]

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2 years ago