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rewona [7]
3 years ago
15

Ill mark the brainliest if you help me with the these three questions 7,8,9

Mathematics
1 answer:
Nitella [24]3 years ago
8 0

Answer:

7) π  8) 6.25π  9)  16π


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Write x2 − 8x + 13 = 0 in the form (x − a)2 = b, where a and b are integers
Marrrta [24]
X^2 - 8x + 13 = 0
subtract 13 from both sides
x^2 - 8x = -13
-8/2 = -4,   (-4)^2 = 16,  add 16 to both sides
x^2 - 8x + 16 = -13 + 16
factor the left side
(x - 4)^2 = 3
3 0
4 years ago
Seven - twelfths of a new dress has been sewn. Chelsea did 3/7 of the sewing. How much of the dress did Chelsea sew?
galina1969 [7]
1/4, because 7/12×3/7=1/4
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4 years ago
1. Is the relation a function? Why or why not?<br> {(-3,-2),(-1,0), (1, 0), (5,-2)}
34kurt

Answer:

yes, the given relation is a function.

Step-by-step explanation:

The given relation is

{(–3, –2), (–1, 0), (1, 0), (5, –2)}

A relation is called function if each element of the domain is paired with exactly one element of the range.

It means for each value of x there exist a unique value of y.

In the given relation for each value of x there exist a unique value of y.

Therefore the required solution is yes and this relation is a function.

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