3 years ago

A number is decreased by seven. Then, the new number is multiplied by 3 to get an answer of -9.

Mathematics

2 answers:

Nady [450]3 years ago

8 0

Answer:

C. 4

Step-by-step explanation:

podryga [215]3 years ago

4 0

Answer:

regular 4 is correct

Step-by-step explanation:

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A 20 ft. ladder is used against a 15 ft. wall. What is the measure of the angle made by the ladder and the ground (nearest whole

Brrunno [24]

Step-by-step explanation:

Given that,

The length of a ladder, H = 20 feet

The height of the wall, h = 15 ft

We know that,

$\sin\theta=\dfrac{h}{H}$

h is perpendicular and H is hypotenuse

So,

$\sin\theta=\dfrac{15}{20}\\\\\theta=\sin^{-1}(\dfrac{15}{20})\\\\\theta=48.59^{\circ}$

Now using Pythagoras theoerm,

$b=\sqrt{H^2-h^2}\\\\b=\sqrt{20^2-15^2}\\\\b=13.2\ ft$

Hence, the angle made by the ladder and the ground is 48.59° and the ladder is 13.2 feet from the wall on the ground.

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3 years ago

You deposit $6000 in an account earning 2% interest compounded monthly. How much will you have in your account in 15 years?

Dmitrij [34]

Well 2% of 6000 is 120. Then u take 120 times 12 (the amount of months in 1 year) than u take the answer (1440) and mulitply it by 15 (the amount of years) and get 21600.

Hope this helps! :3

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4 years ago

A project has each of the following characteristics except ____.

Brut [27]

Answer:

C. Low risk with a high profit potential or benefits.

Step-by-step explanation:

I hope this helps.

7 0

3 years ago

Alice owns a monthly salary of $315 plus a commission on her total sales last month or total sales were $9640 and she earned a t

miskamm [114]

It's $1082.60•9640 which equals 1'"0=*000.

6 0

3 years ago

Find the value of x. 8 5 X + 20 I need help please

Deffense [45]

Answer:

$x=-\frac{68}{9}$

Step-by-step explanation:

$\frac{9}{14}=\frac{8}{x+20}\\$

$9(x+20)=8*14\\9x+180=112\\9x=-68\\x=-\frac{68}{9}\\$

5 0

3 years ago