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3 years ago

How do you solve -3(22+6)=-30

Mathematics

1 answer:

sukhopar [10]3 years ago

8 0

Answer:

Solve the equation inside the parentheses

-3(28) = -30

Multiply the constants

-84 = -30

The equation is false because -84 ≠ -30. So, the equation is false

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40 36 32 28 what number comes next

Alex73 [517]

Answer:

Step-by-step explanation:

subract 4 each time

6 0

3 years ago

What is the slope of the line that has an x-intercept at x=12 and a y-intercept at y=−20?

steposvetlana [31]

Answer:

The slope is 5/3

Step-by-step explanation:

(12,0)

(0,-20)

Changes in y is -20-0=-20

Changes in x is 0-12=-12

Rise(y) over run(x) = -20/-12

-5/-3

5/3

4 0

3 years ago

Rate of change from the line

Ghella [55]

$\textbf{Answer:}$

$\frac{-1}{4}$

$\textbf{Step-by-step explanation:}$

$\frac{y2 - y1}{x2 - x1}$

$\textrm{Use the formula above to determine the rate of change}$

$\frac{1 - 2}{4 - 0} \rightarrow\frac{-1}{4}$

$\textrm{The rate of change of this line is }$ $\frac{-1}{4}$

6 0

3 years ago

Read 2 more answers

The measure of angle A to the nearest tenth of a degree is: A 18.5 B 19.5 C 20.5

Andrew [12]

Answer:

Step-by-step explanation:

This is a right triangle as shown by the right angle.

The side opposite the right angle is the hypotenuse, which is 9.
The side opposite angle A is 3.

So we have the opposite of A and the hypotenuse.

The trigonometric ratio that relates opposite side to hypotenuse is SINE.

$sin\theta=\frac{opposite}{hypotenuse}$

Since, we need angle A, $\theta$ is A, opposite side is 3, and hypotenuse is 9, we substitute:

$sinA=\frac{3}{9}\\sinA=\frac{1}{3}$

To solve for the angle, we use our calculator and find the inverse sin of $\frac{1}{3}$ :

$A=sin^{-1}(\frac{1}{3})\\A=19.47$

Rounding to nearest tenth of a degree:

$A=19.5$

B is the right choice.

6 0

3 years ago

jordan is 102 years younger than kimberly. 2 years ago kimberlys age was 4 times jordans age. How old is jordan now?

Ahat [919]

Now:
kimberly = k
jordan = k - 102

2 years ago
kimberly = k - 2
jordan = k - 104

k - 2 = 4(k - 104)

k - 2 = 4k - 416

-3k = -414

k = 138

kimberly is 138

jordan is 138 - 102 = 36

k - 102 = 36

7 0

3 years ago

Read 2 more answers