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pentagon [3]
4 years ago
12

What do heating systems cooling systems and heat engines have in common

Mathematics
1 answer:
Lunna [17]4 years ago
5 0

Answer:

is D

Step-by-step explanation:

for egny

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Please find the perpendicular line slope equation please! Thanks!
lana66690 [7]

We need to convert this equation to slope-intercept form first.

We can do that by solving for y.

x - 5y = 15

<em><u>Add 5y to both sides.</u></em>

x = 5y + 15

<em><u>Subtract 15 from both sides.</u></em>

x - 15 = 5y

<em><u>Divide both sides by 5.</u></em>

y = 1/5x - 3

We now know the slope is 1/5.

The slope of the line perpendicular to the line with a slope of 1/5 is -5.

The slope of a perpendicular line is the negative reciprocal of the original slope.

Using a graphing calculator, we know the y-intercept of the line that is perpendicular to the original line must have a y-intercept of -6 to run through the points (-2, 5).

The equation of the new line is y = -5x - 6.


5 0
3 years ago
Read 2 more answers
Using half-angle formulas, find the exact value of cos x/2 given the following constraints.
Neko [114]
 <span>cos(x/2) = sqrt( (1 + cos(x)) / 2 ) 

</span>
8 0
3 years ago
Solve for x.<br> 3(-2x - 1) = 2(x + 5)
Marianna [84]

Answer:

x= −  8 /13  = −1  8 /5  = −1.625

Step-by-step explanation:

either one is the answer

<3 Enjoy,

    Dea

3 0
3 years ago
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Please help me with this question! Will mark brainliest :)
svetlana [45]

lenght :

2x - 3

breadth :

4x + 5

AREA = LENGTH × BREADTH

= (2x - 3) \times (4x + 5)

multiplying the above gives :

= 8 {x}^{2}  + 10x - 12x - 15

= 8 {x}^{2}  - 2x - 15

5 0
3 years ago
What is 4x3x4x9 squared
Anni [7]

Answer:

186,624 I think

Step-by-step explanation:

4*3=12

12*4=48

48*9=432

432^{2}= 186,624!

8 0
3 years ago
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