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

Me ayudan por favor?? 20 puntos a quien responda

Match the person most commonly associated with the group or movement during the 1960s. 1. Malcolm X 2. Timothy Leary 3. Jerry Pubin 4. Stocely Carmichael 5. Tom

Which of the following statements about the North and/or South are true? 1). The North was less industrialized and had a lower literacy rate than the South. 2).

Can you look at the picture Look at the picture ASAP and help please?

What best describes the narrator's mood? O inspired O mournful O bothered O sympathetic

Simplify: 2⁶X5⁴X3¹²/2²x5²x3⁴

write the output of given program:

Solve: x+2/x-4<0 O _4 O -2 -2 -4

At which angle will the hexagon rotate so that it maps onto itself? O 60° 90° 0 120° O 180°

A man was paid basic wage of 2.50. dollars a day.if he worked every day in the month, calculate his basic wage for February