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Black_prince [1.1K]
3 years ago
7

If f(x) = x2 + x and g(x) = x − 3, find f(g(7)). A.20 B.28 C.32 D.53

Mathematics
1 answer:
worty [1.4K]3 years ago
3 0
Here's how I answer these kind of questions.

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What is the first step in adding these equations to eliminate y? 5x+6y=9
elena-14-01-66 [18.8K]

multiply all terms in the second equation by 2 to get the coefficient on the y variable to be -6.

2(4x-3y=8)\\8x-6y=16

7 0
3 years ago
HELP ASAP!!!!!!!! PLSSSSSSS HURRY!!!
tamaranim1 [39]

Answer:

D

Step-by-step explanation:

8 0
2 years ago
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Ab + 2b²<br> where<br> a = 7 b=4
Veronika [31]

Answer:

60

Step-by-step explanation:

a=7\\b=4\\ab+2b^2\\(7)*(4)+2*(4)^2\\28+2*16\\28+32\\=\fbox{60}

7 0
1 year ago
Alan drew several three-dimensional figures. Which of the following figures has exactly 5 faces and 5 vertices?
Marat540 [252]

Answer:

Rectangular Pyramid

Step-by-step explanation:

we know that

A <u><em>rectangular pyramid</em></u> is a three-dimensional figure that has a rectangular base and four lateral triangular faces

so

The total number of faces is 5 (one rectangular face plus four triangular faces)

The total number of vertices is 5 (four at the base and one at the apex)

5 0
3 years ago
(i) 809, 708, 607, _____, _ class 4<br>__class 4​
schepotkina [342]

Answer:

809, 708, 607, 506, 405, 304, 203, 102, 1, -100

Step-by-step explanation:

809, 708, 607, _____, _______

First term = 809

Second term = 708

Third term = 607

Difference between first term and second term = 809 - 708

= 101

Difference between second term and third term = 708 - 607

= 101

Therefore, the common difference is 101

Fourth term = 607 - 101

= 506

Fifth term = 506 - 101

= 405

Sixth term = 405 - 101

= 304

Seventh term = 304 - 101

= 203

Eighth term = 203 - 101

= 102

Ninth term = 102 - 101

= 1

Tenth term = 1 - 101

= - 100

809, 708, 607, 506, 405, 304, 203, 102, 1, -100

4 0
2 years ago
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