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iren [92.7K]
2 years ago
13

Urgent help thank you ​

Mathematics
1 answer:
arsen [322]2 years ago
7 0

Answer:

-4

Step-by-step explanation:

7x^3 + 5x^2 - 2
= 7*-1 + 5*1 - 2

= -7 + 5 - 2

= -4

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Find the midpoint of points A(10,-7) and B(6, 1) graphically.
sashaice [31]

Answer:

(8,-3)

Step-by-step explanation:

<u>Midpoint Formula: </u> (\frac{x^{1}+x^{2}  }{2}, \frac{y^{1} +y^{2} }{{2} }   )

Plug in your numbers from the coordinates:

(10+6/2, -7+1/2)

(16/2, -6/2)

(8,-3)

4 0
2 years ago
Write the equation of the parabola in vertex form.<br> vertex (3,1), point (2, - 6)<br> f(x) =?
Romashka [77]

Answer:

f(x)=-7(x-3)^2+1

Step-by-step explanation:

Vertex form of a quadratic is given by:

f(x)=a(x-h)^2+k

Where (h, k) is the vertex and <em>a</em> is the leading coefficient.

We are given that the vertex is (3, 1). Hence, <em>h</em> = 3 and <em>k </em>= 1. By substitution:

f(x)=a(x-3)^2+1

We are also given a point (2, -6). This means that when <em>x </em>= 2, <em>f(x)</em> = -6. Hence:

-6=a((2)-3)^2+1

Solve for <em>a</em>. Subtract:

-6=a(-1)^2+1

Simplify:

-6=a+1

Therefore:

a=-7

Hence, our quadratic is:

f(x) = -7 (x-3)^2 + 1

7 0
3 years ago
2.50<br> Х 35.<br> What is the answer
KiRa [710]

Answer:

87.5

Step-by-step explanation:

mental math

5 0
3 years ago
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Which of the following situations are equal to 20%? Select all that apply.
lilavasa [31]

Answer:

all except C.

Step-by-step explanation:

8 0
3 years ago
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Simplify 5c + 5c + 6c
Nikolay [14]
16c. Hopefully this helps.
3 0
4 years ago
Read 2 more answers
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