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aleksley [76]
3 years ago
12

Simplify 8 2(10 – r).

Mathematics
1 answer:
MissTica3 years ago
8 0
Is the 8 with the problem?
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The area of a square is 49 square meters. How long is each side?
Artemon [7]

A square has 4 equal sides, which means when you need to work out the area, you're doing length × width, but the length and width are exactly the same, because it's a square (look at the picture if you don't understand this).

That means you just have to pick any side (let's call this side x), and multiply it by another side of the square. Now, because all of the sides are equal, you're doing x multiplied by x, which is the same as x².

Therefore, if the area is equal to x², and in this question, it's also equal to 49 (as stated in the question), we can equate them to each other:

x² = 49

Now to get the x by itself, we need to do the opposite of squaring, which is square rooting. Therefore, we square root both sides of the equation:

√x² = √49

The √ and the ² cancel out, so you're just left with x:

x = √49

The square root of 49 is just 7, so we can replace √49 with 7, and we get:

x = 7

Now remember, earlier, I called x the value of one side. Therefore, by remembering that, you know that the value of one side is equal to 7. And because all the sides are the same as each other, each side is equal to 7 metres.

Therefore, your final answer is 7 metres :)

3 0
3 years ago
Please help! will give brainliest if right
asambeis [7]

Answer:

first option

Step-by-step explanation:

y = 1/4x - 5/4

this line has a slope of 1/4 and a y-intercept of -5/4

7 0
3 years ago
Read 2 more answers
If you divide a number by a other number will it always be smaller?
ioda
No you can divide 0.5 by 0.25 and you will get 2
6 0
3 years ago
Read 2 more answers
2x-1/4(12x+4)=3<br><br><br><br> 2x-1/4 (12x+4)=3
eduard
<span>2x-1/4(12x+4)=3
</span>⇒ 2x -1/4*(12x) -1/4*4= 3 (distributive property)
⇒ 2x -3x -1= 3
⇒ -x= 3+1
⇒ -x= 4
⇒ x= -4
<span>
Final answer: x=-4~

</span>
3 0
3 years ago
The school record at Winterbourne Elementary School for the girls' long jump is 4.902 meters. Linda just broke the school record
Damm [24]
I believe the answer is a
4 0
2 years ago
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