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enyata [817]
3 years ago
6

For what value of x is angle 1 complementary to angle 2, if m angle 1=5x+4 and m angle 2=7x+2?

Mathematics
1 answer:
belka [17]3 years ago
6 0

<span>Two </span>Angles<span> <span>are </span></span>Complementary<span> <span>when they add up to 90 degrees (a Right </span></span>Angle). They don't have to be next to each other, just so long as the total is 90 degrees.

So (5x + 4) + ( 7x + 2) = 90

12x + 6 = 90

12x = 90 – 6

12x = 84

<span>X = 7</span>

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The sum of a certain number and a second number is -42. The first number minus the second number is 52. find the numbers
julia-pushkina [17]
Let the first number be x and decide number be y
therefore x+y = -42
also. x-y = 52 using the process of elimination
we get: 2x = 10
we divide both sides by 2, which gives us x=5
then we substitute the value of x in the first equation
that gives us. 5+y = -42
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8 0
3 years ago
The slope of a line is negative for use the cordons of the labeled point to find a point-slope equation of the line.
Alexeev081 [22]
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5 0
4 years ago
What's the answer for these two?<br> y= -2x+9<br> y=4x-3
Klio2033 [76]

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4 0
3 years ago
A countertop is 18 feet long and 5 feet wide.
madam [21]

Answer:

The countertop is  8.37 square meters

Step-by-step explanation:

Let

L ----> the length of the countertop

W ----> the width of the countertop

we know that

The area of rectangle (countertop) is equal to

A=LW

we have

L=18\ ft\\W=5\ ft

Remember that

1\ ft=0.305\ m

To convert feet to meters multiply by 0.305

so

L=18\ ft=18(0.305)=5.49\ m

W=5\ ft=5(0.305)=1.525\ m

<em>Find the area in square meters</em>

A=(5.49)(1.525)

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5 0
3 years ago
Read 2 more answers
How did you get that answer? Also doesn't 80 tens equal 800
Scrat [10]
Yes. 80 tens = 80 x 10

80 x 10 = 800

hope this helps
5 0
3 years ago
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