msfaybiiee9934 msfaybiiee9934

22-02-2016
Mathematics

contestada

If the value of b is 7, then what is the value of the expression -3b2 + 25 = ? A. 122 B. –122 C. 172 D. 17

Respuesta :

Amphitrite1040 Amphitrite1040

22-02-2016

-3 × 39 + 25
-147 + 25
=
-122

So this means your answer would be: B. -122

Answer Link

Exvited Exvited

22-02-2016

We first need to substitute in the value of b, which is 7.

[tex]-3(7)^2 + 25 \\ \\ -3 \times 49 + 25 \\ \\ -147 + 25 \\ \\ -122 \\ \\ [/tex]

The final result is, B) -122.

Answer Link

Otras preguntas

what are the building blocks of all matter A.protons B.cells C.electrons D.atoms

For her book club, Sharon reads for 45 minutes each day. Write an expression for the number of hours she reads in d days?

Ab out how many african americans were elected to high public office during reconstruction

Positive thinking leads towards more creative solutions because positive thinkers _______. a. Think in different contexts b. Eat food like carrots c. Are very l

who is most most affected of suicide\

which graph represents the solution |x + 1| – 3 < 4

Earth is protected from most meteorite impacts by _______________.

A gateway is defined as

What’s the answer !!!!!!!!!!!!!!!!!!!

Which ships survived the attack on Pearl Harbor untouched? light cruisers destroyers battleships aircraft carriers