All categories

2 years ago

Let m (x)=2x^2+6x-7 determine m (3)

1 answer:

4 0

M(x) = 2x^2 + 6x - 7.......find m(3) by subbing in 3 for every x
m(3) = 2(3^2) + 6(3) - 7
m(3) = 2(9) + 18 - 7
m(3) = 18 + 18 - 7
m(3) = 29 <==

You might be interested in

I spent 3/4 of my money and then I spent 1/5 of what was left.

Alborosie

1/20 is the fraction that you'll have left

6 0

2 years ago

(3n² p⁴)<br> Idk how to solve it

tester [92]

me neither but this is what i got

3n² p⁴

4 0

2 years ago

Help me out please, im only typing this much because its making me...

Genrish500 [490]

Answer:

B. $x^{2} +2x-8$

Step-by-step explanation:

Here the best method to solve is by substituting the end values of the set in each option , otherwise it will a time consuming problem.

Now substitute x=-4 in all the options

A. $x^{2} -2x-8$

16+8-8=16>0

so out of option A and C option C is correct.

B. $x^{2} +2x-8$

16-8-8=0 which means for the values of x>-4 $x^{2} +2x-8$ is less than 0

Now substitute x=2 in all the options

A. $x^{2} -2x-8$

4-4-8=-8<0 . so option A and C both are incorrect.

B. $x^{2} +2x-8$

4+4-8=0 which means for the values of x<2 $x^{2} +2x-8$ is less than 0

Therefore the correct option is B

6 0

2 years ago

What is the difference between –4 and 6?

Andrew [12]

The difference between them is 10

-4 - 6 = -10, however since it is only asking for the <em>difference, </em>your answer would be 10.

5 0

2 years ago

Help me wit this pls do now

Anna [14]

Answer:

see below

Step-by-step explanation:

If x represents the number of dimes, then 2x will represent twice the number of dimes. This is the number of quarters, since there are twice as many quarters as dimes.

There are 6 more nickels than dimes, so the number of nickels is 6 more than x. It is (x+6).

If we use the monetary values in cents, then the total of all coins is ...

25(2x) +10(x) + 5(x+6) = 485 . . . . . . matches choice D

4 0

2 years ago