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dalvyx [7]
2 years ago
8

10. What is the value of x in the figure at the right? (Examples 3 and 4

Mathematics
2 answers:
Montano1993 [528]2 years ago
8 0

Answer:

x = 37

Step-by-step explanation:

Vertically opposite angles are equal

Therefore,  2x + 6 = 80

Subtract 6 from both sides:   2x = 74

Divide both sides by 2:   x = 37

Ghella [55]2 years ago
3 0
2x+6=80
2x=74
X= 37

Please like if this was helpful!
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At a concert 2/5 of the people were men, there were 3 times as many women as children. If there were 45 more men than children,
Bogdan [553]

This involves creating some equations.

First, these are what the letters I used stand for:

c = children

w = women

m = men

x = total population

Then, we must make an equation for each statement.

2/5x = m (2/5 of the people are men)

3c = w (there are 3 times as many women than children)

45+c = m (there are 45 more men than children)

Now, let's start plugging in our numbers:

x = all the men, women, and children

2/5(m+w+c) = m

2/5 (45+c +3c + c) = m     [Now simplify]

2/5 (45 + 5x) = m       [Now Distribute]

2/5(45) + (2/5)(5x) = m

2c + 18 = m    [Above we stated that there were the same amount as men as c +45]

2c + 18 = 45 +c     [Now set equal to c]

2c (-c) +18 = 45 +c (-c)

c+18 (-18) = 45 (-18)

c = 27

Now that we know that there was 27 children, we can plug 27 in for c in the other equations.

MEN = 27 + 45

WOMEN = 3(27)

CHILDREN = 27

Now add those three answers to find your total!

8 0
3 years ago
If A(7,9) and B(3,12) find AB (remember: AB means "the distance between points A and B")
GREYUIT [131]
The length of segments ab is 24
5 0
3 years ago
-4x+2=42how do I solve this problem ​
jeka94

Answer:

x = -10

Step-by-step explanation:

move all the constants (numbers without variables) to one side to get

-4x = 42 - 2

-4x = 40

multiply by -1

4x = -40

divide by 4

x = -10

3 0
3 years ago
Read 2 more answers
-4 (-3x-2)+4=60 can you help me plz ​
Ede4ka [16]
X = 4.

You have to distribute by multiplying -4 by the numbers between -3x and -2.

12x + 8 =60

Subtract the 8 from 60 to simplify the equation.

12x = 48

Divide 12 by 48 and get 4.

x=4
8 0
3 years ago
What is the surface area of the regular pyramid below? I’ll would be helpful if you guys list down the steps !
meriva

Answer:

The answer to your question is A = 648 u²

Step-by-step explanation:

I attach the solution because it said that I was writing improper words.

6 0
3 years ago
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