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NikAS [45]
4 years ago
11

Which value is needed to create a perfect square trinomial from the expression x2 + 8x + _____?

Mathematics
1 answer:
Alecsey [184]4 years ago
4 0
I believe it's +16, if you complete the square you'd have (x+4)^2 - 16 + a = 0 where a is the value you're looking for, so to make this correct you need a = 16
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A point P has coordinates (3,2) what are the new coordinates after reflecting point P over the y-axis
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8 0
3 years ago
Read 2 more answers
Could anyone help me solve this?<br>2.5m + 10 = 1.6m - 6​
PilotLPTM [1.2K]

Answer:

m = 17.78.

Step-by-step explanation:

Given the algebraic expression;

2.5m + 10 = 1.6m - 6​

To find the value of m;

First of all, we would collect like terms.

2.5m - 1.6m = -6​ - 10

0.9m = -16

m = -16/0.9

m = 17.78

3 0
3 years ago
Sebastian is going to deposit $790 in an account that earns 6.8% interest compounded annually his wife Yolanda will deposit $815
strojnjashka [21]

Answer:

Step-by-step explanation:

Complete question

A) Sebastian's account will have about $28.67 less than Yolanda's account. B) Sebastian's account will have about $9.78 less than Yolanda's account. C) Yolanda's account will have about $28.67 less than Sebastian's account. D) Yolanda's account will have about $9.78 less than Sebastian's account.

For Sebastian

Amount = P (1 + \frac{r}{n})^{nt}

Substituting the given values we get

A =

790 (1 + \frac{6.8}{100*1})^{3*1} \\962.367

For Yolanda

Amount  = P(1+rt)

A = 815 (1 + \frac{7.2}{100}*3)\\A = 991.04

Yolanda's account will have about $28.67 less than Sebastian's account

Option C is correct

5 0
3 years ago
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The inside of the feild has 4 lines if symmetry

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