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Katarina [22]
3 years ago
6

SOLVE THIS PLEASE AND EXPLAIN FOR FULL POINTS:)))

Mathematics
1 answer:
blondinia [14]3 years ago
3 0

Answer:

x=30, y=90

Step-by-step explanation:

y+x  and y-x are supplementary angles.  They must add to 180 degrees

y+x+y-x = 180

Combine like terms

2y = 180

Divide by 2

2y/2 = 180/2

y= 90

y+x  and 2x are supplementary angles.  They must add to 180 degrees

y+x+2x = 180

y+3x =180

We know y =90

90+3x=180

Subtract 90 from each side

90-90 +3x = 180-90

3x= 90

Divide by 3

3x/3 = 90/3

x = 30


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Solve the following problems mentally and match it to its corresponding solution.
HACTEHA [7]

Answer:

<h3>1. t=10</h3><h3>2. t=4</h3><h3>3. t=40</h3>

Step-by-step explanation:

Isolate the term of t from one side of the equation.

<h3>1. 4t=40</h3>

First, you have to divide by 4 from both sides.

4t/4=40/4

Solve.

Divide the numbers from left to right.

40/4=10

<h3><u>t=10</u></h3>

<h3>2. 10+t=14</h3>

<u>First, change sides.</u>

t+10=14

<u>Then, subtract by 10 from both sides.</u>

t+10-10=14-10

<u>Solve.</u>

<u>Subtract the numbers from left to right.</u>

14-10=4

<h3><u>t=4</u></h3>

<h3>3. 70-t=30</h3>

First, subtract by 70 from both sides.

70-t-70=30-70

Solve.

30-70=-40

<u>Rewrite the problem down.</u>

-t=-40

Divide by -1 from both sides.

-t/-1=-40/-1

<u>Solve.</u>

<u />

<u>Divide the numbers from left to right.</u>

-40/-1=40

<h3><u>t=40</u></h3>

  • <u>Therefore, the correct answer is t=10, t=4, and t=40.</u>

I hope this helps! Let me know if you have any questions.

6 0
2 years ago
Read 2 more answers
The equation y=x^2-12x+45 models the number of books y sold in a bookstore x days after an award-winning author appeared at an a
romanna [79]
Answer: The first day the author reaches 100 days is on day 16.

To solve this problem, you could use a graphing calculator to graph the given equation. Then, determine when this line crosses 100. It crosses when x = 15.539. Therefore, we would have to round up to 16 so it is at least 100.

You could use the quadratic equation to solve: 100 = x^2 -12x + 45

Either you will get 16. If you use the quadratic formula, make sure to only use the positive answer.
7 0
3 years ago
15/8 + (-3 4/7) plz help me.
givi [52]
I think it’s -1.69642857143
4 0
3 years ago
Helpppppppppppppppppppppplppoooooo
Komok [63]

Answer:

hope it helps you plz mark me brilliantest

Step-by-step explanation:

B

6 0
3 years ago
Read 2 more answers
PLEASE HELP
postnew [5]

Answer:

Below

Step-by-step explanation:

Substituting the given values:

f(6) = 6(2/3) - 2 =   cube root of 6^2 - 2 = cube root 36 - 2

f(-6)=  (-6)(2/3) - 2 =   cube root of(-6)^2 - 2 = cube root 36 - 2

So This is true,

f(6) =   cube root of 6^2 - 2 = cube root 36 - 2 = 1.3019

2 * f(3) = 2 *  (cube root of 3^2 - 2 )  =  2 * (cube root of 9 - 2) = 0.1602

So False,

4 0
3 years ago
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