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natima [27]
3 years ago
9

Evaluate (c − b)2 + a2 for a = –5, b = –2, and c = –4.

Mathematics
1 answer:
taurus [48]3 years ago
3 0

(c - b)² + a²


a = -5

b = -2

c = -4


(-4 - (-2))² + (-5)²

(-4 + 2)² + (-5)²

(-2)² + (-5)²

4 + 25

29

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PLEASE HELP !! ILL GIVE BRAINLIEST *EXTRA 40 POINTS* DONT SKIP :(( .!
elena-14-01-66 [18.8K]

Answer:

<h2>B) one solution</h2>

Step-by-step explanation:

<h3>to understand this</h3><h3>you need to know about:</h3>
  • linear equation
  • PEMDAS
<h3>tips and formulas:</h3>
  • \sf\text{a system of linear equation has only one solution if $\frac{a_1}{a_2}\neq \frac{b_1}{b_2}$}
<h3>given:</h3>
  • \begin{cases}2x - 4y =  - 1 \\ 8x - 11y =  - 19 \end{cases}
<h3>let's solve:</h3>

  1. \sf substitute \: the \: value \: of \: a \: b :  \\  \frac{2}{8}   \ne  \frac{ - 4}{ - 11}  \\

\text{$\therefore$ the system of linear equation has only one solution}

6 0
3 years ago
How do you do this problem
Ainat [17]
So the problem has no symbols, but we're going to multiply because the fraction on the left is right next to the parentheses. 

-5/2 * 1/10x = -5x/20

I put "x" next to the 5 because the "x" counts as part of the numerator. Now that it's 5x over 20 that equals one, I'd first reduce -5x/20 into -x/4, then do

-x/4 * -4 = 1 * -4

To make the "x" side equal one, we have to multiply both sides by -4, to make both sides equal. 

x = -4. 
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Part A: The answer is B.
As vertically opposite angles are equal
x+10=4x-35
10=3x-35
45=3x
x=15

Part B: The answer is D.
We'll substitute in the value of X in one equation.
x+10
=15+10
=25
As the two angles are equal bot must be 25 degrees.
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3 years ago
Using the formula in model 1, choose the correct answers for the new balance and amount of interest earned in the following comp
melisa1 [442]
To find the total amount
The formula is
A=p (1+r)^t
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P present value 1050
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T time 25 years
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Interest amount
I=A-p
I=4,506.46−1,050
I=3,456.46
5 0
3 years ago
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