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LekaFEV [45]
3 years ago
10

Tell whether the angles are complementary or supplementary. Then find the value of x.

Mathematics
2 answers:
gladu [14]3 years ago
8 0

Answer:

  • 7) x = 5
  • 8) x = 20

Step-by-step explanation:

Complementary angles form a right angle and supplementary angles form a straight angle.

<h3>#7</h3>

<u>Complementary:</u>

  • 65 + 5x = 90
  • 5x = 25
  • x = 5
<h3>#8</h3>

<u>Supplementary:</u>

  • 2x + 6x + 20 = 180
  • 8x = 160
  • x = 20
Tomtit [17]3 years ago
6 0

Step-by-step explanation:

1)

Since we know that sum of two complementary angles are 90⁰

=> 65 + 5x = 90

=> 5x = 90 - 65

=> 5x = 35

=> x = 35/5

=> x = 7⁰

2)

Since we know that sum of two supplementary angle are 180

=> 2x + 6x + 20 = 180

=> 8x = 180 - 20

=> 8x = 160

=> x = 160/8

=> x = 20

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A soccer ball is kicked from ground level. The function y = −12x(x − 4) shows the height (in feet) of the ball, where x is time
AfilCa [17]

Answer:

4 seconds

Step-by-step explanation:

On the ground, height = 0

-12x(x - 4) = 0

x = 0, 4

It was on the ground initially at x = 0, and again at x = 4

4 0
3 years ago
Pam read 126 pages of her summer reading bookin 3 hours. Zac read a180 pages of his summer reading book in 4 hours. If they cont
Alex787 [66]

Answer:

Zac will finish, Pam won’t

Step-by-step explanation:

Let’s have the individual reading speeds

The individual reading speeds are the number of pages divided by hours taken

For Pam; 126/3 = 42 pages per hour

For Zac; 180/4 = 45 pages per hour

In five hours, Zac would read; 45 * 5 = 225 pages

In five hours, Pam would read 42 * 5 = 210 pages

6 0
2 years ago
Match the pairs of variables with the type of relationship they show.
Luda [366]
"-the time people spend at work and the number of friends they have"
would be "causation"; because the more/less time someone spends at work is implied to be the *cause* of their number of friends. 

"-the length of a person's hair and his or her math skills"
would be "no relationship" seeing as there's nothing that relates these two variables that could have an affect on the outcome of one or the other. 

<span>"-a student's test scores in math and physics" would be "correlation" because the two subjects are similar enough that any outcome in one could very well be similarly related to the outcome in the other. </span>
7 0
3 years ago
Guys, please help me with this problem.
SashulF [63]
<h2>Answer:</h2>

The number is -2.

<h2>Step-by-step explanation:</h2><h3>Written out, our equation looks like this:</h3><h3>(-5·x)+2=12</h3>

We'll start of by taking our final result of 12 and subtracting 2, as the beginning of the statement says "two more."

<h3>12 minus 2 gives us 10.</h3>

Now, since the statement says "the product of -5," we will take this 10 and divide by -5.

<h3>10 divided by -5 gives us -2.</h3>

This means that our number, x equals -2. Of course, we must input this solution to double check our work.

<h3>(-5·<u>-2</u>)+2=12</h3><h3>10+2=12</h3><h3>12=12</h3>

<h2>Our final answer is x=-2!</h2>
3 0
3 years ago
Read 2 more answers
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Effectus [21]
To be honest i’m probably the worst at math lol good luck
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3 years ago
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