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DaniilM [7]
3 years ago
12

What is the answer to this math problem?

Mathematics
1 answer:
ladessa [460]3 years ago
8 0
My answer was d and I've got this question in my math book and that's what I answered
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∠A=5x−18. ∠B=3x+42∘ solve for x and then find the measure of ∠A
KatRina [158]

Answer:

x = 30 ∠A = 132 degrees

Step-by-step explanation:

Set the equations equal to each other to solve for x

5x - 18 = 3x + 42

-3x        - 3x               Subtract 3x from both sides

2x - 18 = 42

    + 18  + 18              Add 18 to both sides

2x = 60                     Divide both sides by 2

x = 30

Now plug this into the equation for angle A

∠A = 5(30) − 18        Multiply

∠A = 150 - 18           Subtract

∠A = 132 degrees

If this answer is correct, please make me Brainliest!

6 0
3 years ago
Read 2 more answers
Find the Slope for <br> (3,-4) and (5,4)
REY [17]
The picture below shows the formula for calculating slope

In this example:
y2 = 4
y1 = -4
x2 = 5
x1 = 3
(These are the numbers you substitute into the formula)

Calculations:
4 - (-4) = 8
5 - 3 = 2
8/2 = 4

As you can see, after the values are substituted into the equation & simplified, the slope is equal to 4

8 0
2 years ago
Read 2 more answers
Triangle ABC is similar to triangle DEF.
Sav [38]

Answer: x=7.7, y=40

3/x = 15/38.5

38.5*3=115.5

115.5/15= 7.7

x=7.7


3/8 = 15/y

15*8=120

120/3= 40

y=40


orrrr you can just easily find the scale factor which is 5, multiply 8 by 5 and get 40. And 38.5/5 which is 7.7

7 0
2 years ago
Megan and her little sister, Nora, counted their Halloween candy after trick-or-treating. They love taffy and wanted to know who
storchak [24]

Answer:

Nora

Step-by-step explanation:

M 20 : 50 = 2/5

N 11/25

2/5 = 10/25 < 11/25

3 0
3 years ago
Josie made a 75 on her first quiz in math. On her second quiz she made a 90. What was the
jenyasd209 [6]

Answer:

15%

Step-by-step explanation:

90-75=15

6 0
3 years ago
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