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konstantin123 [22]
3 years ago
15

2x to the power of 2 + x = ? When x=9

Mathematics
2 answers:
oee [108]3 years ago
8 0

Answer:

Step-by-step explanation:

2x to the power of 2 + x = ? When x=9

(2x)^2 + x

= 4x^2 + x

When x = 9

= 4(9)^2 + 9

= 4(81) + 9

= 324 + 9

= 333

mezya [45]3 years ago
7 0

Answer:

<h2>171</h2>

Step-by-step explanation:

\text{Put}\ x=9\ \text{to the expression}\ 2x^2+x:\\\\2(9^2)+9=2(81)+9=162+9=171

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3 0
3 years ago
I have trouble with the converting
Gnom [1K]
HI,
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7 0
4 years ago
If f(x) = integral of 1/ (sqrt of t^3 +2)dt, then f'1 = ?
mihalych1998 [28]
Differentiating an integral removes the integral.

f(x) = integral of dt/sqrt(t^3 + 2)
f'(x) = 1/sqrt(x^3 + 2)
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f'(1) = 1/sqrt(3) = sqrt(3)/3.


I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
4 0
3 years ago
The perimeter of a rectangle is 46in and the diagonal is 17 in
dmitriy555 [2]

Answer + explaination

p=2*(L+l)=46

L+l=46:2

L+l=23

(L+l)^2=529

(L^2+l^2)+2l*L=529

D= V L^2+l^2= 17

L^2+l^2=289

so 289+2l*L=529

    2l*L=529-289=240

l*L=240:2

A=120

4 0
3 years ago
Find the gradient of the line segment between the points (-2,3) and (-5,7)
Rudiy27

Answer:

\frac{4}{ - 3}

Procedures:

\frac {y2 - y1}{x2 - x1}

\frac{7 - 3}{ - 5 -  - 2}

\frac{7 - 3}{ - 5 + 2}

\frac{4}{ - 3}

7 0
3 years ago
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