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AURORKA [14]
2 years ago
13

Help me pleasee !!!!

Mathematics
2 answers:
harkovskaia [24]2 years ago
4 0

Answer:

9) -3/5x + y = 5

10) -x + y = -3

11) 3/5x + y = -3

12) -5/4x + y = 2

Step-by-step explanation:

Daniel [21]2 years ago
3 0

Answer:

here (edit I made a mistake)

Step-by-step explanation:

9) y=\frac{3}{5} x +5

10) y = x - 3

11)  y=-\frac{3}{5} x - 3

12) y=\frac{5}{4} x + 2

these are the slop int forms, my bad...

sorry

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Guys I really need help geometry hw 21 and 22
mario62 [17]

These can be a bit of a mind-twister. A fairly straightforward approach is to define a variable (x) to be the angle, then use 90-x for the complement and 180-x for the supplement. Write the relations given in the text, solve for x, then calculate the measure of the angle asked for by the problem statement.

You don't have to do it that way. In 21, you can work directly with "the complement of the angle." You know that an angle and its complement make 90°, and that an angle and its supplement make 180°. This means the supplement is 90° more than the complement—a fact you can use here.

<h2>21.</h2><h3>Given</h3>

The supplement of an angle is 4 times the complement of the angle.

<h3>Find</h3>

The complement of the angle.

<h3>Solution</h3>

Let x represent the complement of the angle (what the question asks for). Then the supplement of the angle is x+90.

The supplement is 4 × the complement

... x + 90 = 4x

... 90 = 3x . . . . . . . subtract x

... 30 = x

The complement of the angle is 30°.

_____

<u>Check</u>

The angle is 60°; its complement is 30°, and its supplement is 120°. 120° is 4 times 30°, as required.

<h2>22.</h2><h3>Given</h3>

5 times the complement of an angle less 2 times the supplement is 40°

<h3>Find</h3>

the supplement of the angle

<h3>Solution</h3>

We can do this as we did in the previous problem. We are asked to find the supplement of the angle. Let x represent the supplement of the angle. As discussed above, then the complement of the angle is x-90°.

... 5 × (the complement) - 2 × (the supplement) = 40

... 5(x-90) -2x = 40 . . . . . . . . . filling in the variable expressions for complement and supplement

... 5x -450 -2x = 40 . . . . . . . . eliminate parentheses

... 3x = 490 . . . . . . . . . . . . . . . collect terms, add 450

... x = 163 1/3

The supplement of the angle is 163 1/3°.

_____

<u>Check</u>

The angle is 16 2/3°. Its complement is 73 1/3°.

5 times the complement is 366 2/3°. 2 times the supplement is 326 2/3°. The latter subtracted from the former is 366 2/3 - 326 2/3 = 40, as required.

4 0
3 years ago
The interior angle measures of a convex pentagon are consecutive multiples of 4. find the measure of each interior angle.
lawyer [7]

Answer:

100°, 104°, 108°, 112°,116°

Step-by-step explanation:

Let the smallest angle be 4x. Since, the interior angles are consecutive, the other angles are 4(x+1),4(x+2),4(x+3) and 4(x+4).

Sum of interior angles = 540°

4x+4(x+1)+4(x+2)+4(x+3)+4(x+4)=540°

20x+40=540°

20x=(540-40)°

20x=500°

x=(500/20)°

x=25

Using the value of x to calculate the angles:

4x=4*25=100°

4(x+1)=4*26=104°

4(x+2)=4*27=108°

4(x+3)=4*28=112°

4(x+4)=4*29=116°


3 0
3 years ago
Steven is buying a new mountain bike on layaway for $324. If he pays $36 each week how many weeks will it take steven to pay for
Reptile [31]

Answer:

9 weeks

Step-by-step explanation:

324/36 = 9

4 0
2 years ago
Read 2 more answers
I will mark brainliest if ur answer is correct
sergeinik [125]

Answer:

43°

Step-by-step explanation:

80°-37°= 43°

3 0
3 years ago
Read 2 more answers
The length of a rectangular garden is 7 meters longer than its width. if its perimeter is ( 12 x + 14) meters, find its length i
cluponka [151]
L=7+w
P=(12x+14)=2(6x+7)
l+w= P/2 = 2(6x+7)/2= 6x+7
l+w=6x+7
2l = 6x+7
l = (6x+7)/2
l=7+w
-> w= l-7
= [(6x+7)/2] -7
= (6x+7-14)/2
= (6x-7)/2

7 0
3 years ago
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