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Finger [1]
3 years ago
12

Geometry!!!!!!!!!!!!!!!

Mathematics
1 answer:
Nimfa-mama [501]3 years ago
6 0

Answer:

x=4

Step-by-step explanation:

1. 7x+56=14x+28 using distributive property (with the number of stes you need to have, this may count as 2)

2. 56=7x+28 by subtracting 7x from each side

3. 28=7x by subtracting 28 from both sides

4. x=4 by dividng by 7

5. plug back into equation

7(4)+56=14(4+2)

28+56=14(6)

84=84

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What is -2•-11 equal to
ohaa [14]
(-2)(-11)=22
the negatives cancel out
3 0
3 years ago
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Which best explains why the equation 7x + 3 = 7x + 3 has infinitely many<br> solutions?
DochEvi [55]

Answer:

B

Step-by-step explanation:

both sides are equal to begin with so any x that you put in, will get multiplied by 7 and have 3 added to it

7 0
3 years ago
What is probability that the total number of dots appearing on top is 5?
stira [4]
Only 1,4 2,3 3,2 4,1
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7 0
3 years ago
I NEED HELP PLEASE HELP ME
Aloiza [94]
Answer:
294.14cm^2

Explanation:

First find the area of the whole piece of paper:
32*14=448

Then find the area of the two semicircles, semicircle + semicircle = 1 circle:

Area of a circle= (radius squared)(pi):
(7^2)(3.14) = 153.86

Subtract the area of the two semicircles from the whole paper area:
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I hope this isn’t too confusing :)


5 0
3 years ago
Which quadratic equation has solutions x=8 and x=−1?
andrezito [222]
There are two ways you can do this

Using the formula


{x}^{2}  - (sum \: of \: roots)x + poduct \: of \: roots = 0

{x}^{2}  - (8+-1)x +  - 1 \times 8 = 0


{x}^{2}  - 7x  - 8 = 0


Working backwards


x = 8 \: or \: x =  - 1
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\Rightarrow (x-8)(x + 1)=0
\Rightarrow  {x}^{2}   + x -8x - 8 = 0
\Rightarrow  {x}^{2}  - 7x - 8 = 0
7 0
3 years ago
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