MATHEMATICS MIDDLE SCHOOL

Find f(–2) for the function f(x) = 3x2 – 2x + 7. −13 −1 1 23

Answers

Answer 1

Answer:

Answer:

The correct option is 4. The value of f(-2) is 23.

Step-by-step explanation:

The given function is

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

We have to find the value of f(-2). It means we need to find the value of function f(x) at x=-2.

Substitute x=-2 in the given function to find the value of f(-2).

$f(-2)=3(-2)^2-2(-2)+7$

On simplification we get

$f(-2)=3(4)-(-4)+7$

$f(-2)=12+4+7$

$f(-2)=23$

The value of f(-2) is 23. Therefore the correct option is 4.

Answer 2

Answer:

Answer:

f(-2) = 23

Step-by-step explanation:

$f(x)=3x^2-2x+7\n\nf(-2)\to\text{put x = -2 to the equation of a function:}\n\nf(-2)=3(-2)^2-2(-2)+7=3(4)+4+7=12+4+7=23$

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What number has the same value as 50 tens

Answers

500, 50 tens, you have to do five times ten and it equals five hundred, so the answer is 500

50*10 equals 500. That means the answer is 500. (Ten tens in 100 so 50 tens would be 500)

Destiny is doing a science fair project about ant population growth. She has a very young ant colony, and to estimate the population, she captures 25 ants and marks them with special paint. Destiny then releases them into the colony, waits a few days, and then captures 240 ants. She notices that 10 of these ants are marked. To the nearest whole number, what is the best estimate for the ant population?

Answers

Answer:resume

Step-by-step explanation:

step by step u measure

Resume because you have to do step by step

How could you find out which weighs more one ton of pillows or one ton of bowling balls?

Answers

You can put them on a scale and compare them. Or you can figure out the weight of one individually. A ton of pillows won't suddenly increase in weight compared to the bowling balls.

Find (5) for f(x) = (3)

a.9
b.3
c.27
d.81

Answers

Answer:

Step-by-step explanation:

f(x) = 3 is a constant function. It always equals 3 regardless of the x value.

Double-check to ensure that you have typed in the question correctly.

Answer:

the correct answer is 27

Factoring Trinomials 25a^2+20ab+4b^2
If you don't understand I can send you a picture of the problem. :)

Answers

25 a² + 20 ab + 4 b²

for formula $a^x+bx^ky^k+cy ^(2k )$ find u,v such that: u.v = a

and u+v = b then group according to $(ax ^(2k) +ux^ky^k)+(vx^ky^k+cy ^(2k) )$

= $(25a^2+10ab)+(10ab+4b^2)$

factor out 5a from : $25a^2+10ab : 5a(2b+5a)$

factor out 2b from : $10ab+4b^2: 2b(2b+5a)$

= $5a(2b+5a) + 2b(2b+5a)$

factor out : $(5a+2b)$

= $(5a+2b)(5a+2b)$

Refine:

$(2b+5a)^2$

hope this helps!.

How to find area of a rectangle?

Answers

Formula

Area = L*w

Hint : To find the area of a rectangle , multiply the length times the width

I hope that's help !

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