All categories

3 years ago

Please help !!!!! idk how to do this

Mathematics

1 answer:

vladimir1956 [14]3 years ago

7 0

Answer:

Step-by-step explanation:

When x equals -3, then the first equation is simplified to 9 + 6 + 3 = 18; and the second equation confirms the same answer by showing -6 x -3 = 18

You might be interested in

I need help please I don’t know how to make this can someone help me ?

NISA [10]

Answer:

the simplified answer is 3 3/4

Step-by-step explanation:

8 0

3 years ago

Which words from the paragraph help the reader understand the meaning of the underlined word? When I let my dog loose, he chased

olasank [31]

What's the underlined word?

7 0

3 years ago

a 4.50 g coin of copper absorbed 54 calories of heat. what was the final temperature of the copper if the initial temperature wa

I am Lyosha [343]

The final temperature of copper is 155.43°C.

Step-by-step explanation:

The formula to apply is Q=m*Δt*c where ;

Q=heat energy, m=mass, c=specific heat capacity and Δt= change in temperature

Given that Q=54 calories , m=4.50 g and c=0.092 cal/g°C

In this question find Δt then ,the final temperature.

Δt=Q/m*c

Δt=54/4.50*0.092 =130.43°C

To find final temperature, apply the formula;

Δt=Final temperature - Initial temperature

130.43°C=Final temperature-25°C

130.43°C+25°C=Final temperature

155.43°C

Learn More

Specific Heat Capacity : brainly.com/question/12431744

Keyword : specific heat capacity

#LearnwithBrainly

3 0

4 years ago

Find the slope of the line through each pair of points (-18, 13) and (-14, -20) *

BARSIC [14]

Answer:

The answer is

$- \frac{33}{4} \\$

Step-by-step explanation:

The slope of a line given two points can be found by using the formula

$m = \frac{ y_2 - y _ 1}{x_ 2 - x_ 1} \\$

where

(x1 , y1) and (x2 , y2) are the points

From the question the points are

(-18, 13) and (-14, -20)

The slope is

$m = \frac{ - 20 - 13 }{ - 14 - - 18} = \frac{ - 33}{ - 14 + 18} = - \frac{33}{4} \\$

We have the final answer as

$- \frac{33}{4} \\$

Hope this helps you

5 0

3 years ago

If 9(x + 5) = 63 , what is the value of x + 5 ?

alina1380 [7]

X=2 so the value of x+5 is 7

3 0

3 years ago