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elena-s [515]
2 years ago
10

What is the value expression of 42 times 28

Mathematics
1 answer:
Aleksandr [31]2 years ago
8 0
To evaluate an algebraic expression means to find the value of the expression when the variable is replaced by a given number. To evaluate an expression, we substitute the given number for the variable in the expression and then simplify the expression using the order of operations.
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What is (f + g)(x)?<br> f(x) = -2x^2 <br> g(x) = -2x^2 + 9x
andreyandreev [35.5K]

Answer:

-4x^2+9x

Step-by-step explanation:

Adding boh gives

(f+g)(x)=-2x^2+(-2x^2+9x)

=-2x^2-2x^2+9x

=-4x^2+9x

4 0
3 years ago
Been struggling with these problems can anyone help me<br> 19,21,23,25,27,28,30
FrozenT [24]
21 = 4.8
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3 0
3 years ago
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Jennifer scores a 77 on her algebra 2 test. The mean on the test was 73. The standard deviation on the test was 5. What was her
MA_775_DIABLO [31]

Answer:

  0.80

Step-by-step explanation:

The z-score is found from the formula ...

  Z = (X -μ)/σ

  Z = (77 -73)/5 = 4/5 = 0.80

Jennifer's Z-score was 0.80.

7 0
3 years ago
Graph the circle x2 + y2 – 14x – 12y + 76 = 0.
nikklg [1K]

Answer:

The answer is, the center is (7,6) and the radius 3 soo, you would count three from the center to the arc( outer line and then if its three than ur good. proven in khan academy don't worry

Step-by-step explanation:

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7 0
3 years ago
(7x2 + 4x + 10) - (3x2 + 2x - 6)
Vedmedyk [2.9K]

Answer:

4x^2 +2x +16

Step-by-step explanation:

7x2 + 4x + 10) - (3x2 + 2x - 6)

Distribute the minus sign

7x2 + 4x + 10) - 3x2 - 2x + 6

Combine like terms

7x2 + 4x + 10)

- 3x2 - 2x + 6

-------------------------

4x^2 +2x +16

6 0
3 years ago
Read 2 more answers
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