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vazorg [7]
3 years ago
9

PLS HELP ME WITH 28 ASAP!! (MUST SHOW WORK!!) + LOTS OF POINTS

Mathematics
2 answers:
Igoryamba3 years ago
5 0
Multiply both by -1: 113.75-112=1.75
multiply answer by -1: -1.75
mash [69]3 years ago
4 0
-1.75 Well u just subract both of them.. later on if u do it correcctly you will get -1.75
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A grade has 81 girls and 72 boys. The grade is split into groups that have the same ratio of girls to boys as the whole grade.Ho
coldgirl [10]

Answer:

18 girls I think.

Step-by-step explanation:

6 0
2 years ago
100 POINTS!!! Brainliest if correct, I report if the answer is absurd. Don’t answer if don’t know.
Lena [83]

Answer: D

Step-by-step explanation:

To find the perimeter of the square, you want to first find the length of each side. Since the figure is a square, we know that each side is equal to each other. We can set the expressions equal to each other to find x.

\frac{3}{4}x-1=\frac{1}{2}x+7           [subtract both sides by 1/2x]

\frac{1}{4}x-1=7                    [add both sides by 1]

\frac{1}{4}x=8                           [multiply both sides by 4]

x=32

Now that we know x, we can plug it into each expression to find teh length of each side.

\frac{3}{4}(32)-1                       [multiply]

24-1                           [subtract]

23

Now that we know each side is equal to 23, we can add all the sides together to find the perimeter.

23+23+23+23=92        or          23×4=92

Since we know that the perimeter is 92 units, the answer is D.

3 0
3 years ago
Read 2 more answers
Find the value of the expression below for x = 3. <br><br> x2+ 5 <br><br> A.8 B.11 C.14
Sergeeva-Olga [200]

Answer:

11

Step-by-step explanation:

Plz mark brainliest thanks

5 0
3 years ago
What is the slope of the line passing through the points (-1,-7) and (-9, -2) ?​
Dominik [7]
The equation for slope is:
(y2 - y1) / (x2 - x1)

-2 -(-7) = 5
-9 -(-1) = -8

Slope of the line:

5/-8 or -5/8
7 0
2 years ago
Read 2 more answers
Stuck, anyone can help?
expeople1 [14]

Answer:

Step-by-step explanation:

\sqrt{x-3} = x - 5 ( x ≥ 3 )

( \sqrt{x-3} )² = ( x - 5 )²

x - 3 = x² - 10x + 25

x² - 11x + 28 = 0

(x - 4)(x - 7) = 0

x_{1} = 7

x_{2} = 4

Check the answer:

1). x = 7

\sqrt{7-3} = 7 - 2

√4 = 2

2 = 2

2). x = 4

\sqrt{4-3} = 4 - 5

1 = - 1 (False statement) ⇒ x = 4 is an extraneous solution.

6 0
2 years ago
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