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3 years ago

How do I simplify (-3)(7)+(-5)(-2)

Mathematics

1 answer:

Nataliya [291]3 years ago

5 0

Actually the answer is -11 bc (see photo):

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If cot theta= 4/3, find csc theta

Marrrta [24]

Answer: Option d.

Step-by-step explanation:

The trigonometric identity needed is:

$csc^2\theta=cot^2\theta+1$

Knowing that $cot\theta=\frac{4}{3}$ :

Substitute it into $csc^2\theta=cot^2\theta+1$ :

$csc^2\theta=(\frac{4}{3})^2+1$

Simplify the expression:

$csc^2\theta=(\frac{4}{3})^2+1\\\\csc^2\theta=\frac{16}{9}+1\\\\csc^2\theta=\frac{25}{9}$

Solve for $csc\theta$ . Apply square root at both sides of the expression:

$\sqrt{csc^2\theta}=\±\sqrt{\frac{25}{9}}$

$csc\theta=\frac{5}{3}$

8 0

2 years ago

Write a fact with the same sum as 7+5

kaheart [24]

7+5=12 so it can be one of these 8+4=12, 9+3=12, 10+2=12, and 11+1=12.

5 0

2 years ago

Please show your work

Andrei [34K]

Answer:

a = 9

Step-by-step explanation:

a^2 = 41^2 - 40^2

a^2 = 1681-1600 = 81

a = 9

5 0

3 years ago

2(2x+3×-4)+2(4x-6x+8) Cuanto es ?

nikdorinn [45]

First you need to distribute the 2 into each equation and then add like terms. the answer is 6x + 8

3 0

3 years ago

a weather balloon is launched from a height of 475 feet above sea level. the balloon rises at a constant rate of 85 feet per min

GenaCL600 [577]

In this question , it is given that a weather balloon is launched from a height of 475 feet above sea level. the balloon rises at a constant rate of 85 feet per minute.

Here we use the slope intercept form, which is

$y = mx+b$

Where, y is the height h, x is the time, t. And m represents slope, which is 85.

b represents the initial height , which is 475 feet.

On substituting these values, we will get

$h = 85t+475$

And at t = 16 minutes, we will get

$h = 85(16) +475 = 1835 feet$

4 0

3 years ago