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3 years ago

Please help quick it’s for 15 points

Mathematics

1 answer:

aniked [119]3 years ago

7 0

Answer:

3/4 % of year is 8 , 2 feet 1 inch

Step-by-step explanation:

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Algebra 1

Kipish [7]

Uhhhh 9z)856(N)785

Step-by-step explanation:

7 0

3 years ago

The population in the United States is approximately 3.2× 10^8. A total of 1.4 × 10^6 people immigrated to the United States. De

kodGreya [7K]

Answer:

3.186 x 10^8

Step-by-step explanation:

3.2× 10^8 = 320,000,000

1.4 × 10^6 = 1,400,000

320,000,000 - 1,400,000 = 318,600,000

318,600,000 = 3.186 x 10^8

- you get to the power of eight, by counting the amount of spaces the decimal moved over (moving to the left increase, but right decreases)

8 0

3 years ago

I got 2 questions.

alexandr402 [8]

Answer:

1. In triangle ABC,

AC = a = 10, BC =b= 7 and ∠ C = 90°

By cosine law,

$AB^2 = 7^2 + 10^2 - 2\times 7\times 10 cos 90^{\circ}$

$AB^2 = 49 + 100 - 0$

$AB^2 = 149$

$AB= \sqrt{149}$

Now, by the law of sine,

$\frac{sin B}{10} = \frac{sin90^{\circ}}{\sqrt{149} }$

$sin B = \frac{10}{\sqrt{149} }$

$\angle B = 55.0079798014\approx 55.008^{\circ}$

2. In triangle ABC,

∠B = 30°, AB=c=10 and ∠C = 90°

∠A = 180°-(30+90)°=60°

$\frac{AC}{10}=sin30^{\circ}$

⇒ $AC = \frac{10}{2} = 5$

By Pythagoras,

$CB^2 = AB^2 - AC^2=10^2 - 5^2 = 100 - 25 = 75$

⇒ $CB = \sqrt{75} =8.66025403784\approx 8.66$

6 0

4 years ago

Read 2 more answers

Select the one number that does NOT belong in the following set of whole

Alex17521 [72]

Answer:

2.7

Step-by-step explanation:

2.7 is not a whole number because it has a decimal behind it. All of the other numbers are whole because they do not.

4 0

3 years ago

Read 2 more answers

Addison painted her room. She had 50 square meters to paint, and she painted at a constant rate. After 2hours of painting, she h

blagie [28]

Answer:

Y = 50 - 7.5X if 35 m² Area left to paint after 2 hrs out of total 50m²

Step-by-step explanation:

5 0

3 years ago