msfaybiiee9934
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 Amphitrite1040
  • 22-02-2016
-3 × 39 + 25
-147 + 25 
=
-122

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


Answer Link
Exvited
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 is the end behavior of the function f(x) = 2x^4 + 3x^3 - 9x^2 + 65x - 586?
which renisance technique was used in this painting to make it more realistic and three dimensional?
What is Tim’s job at the beginning of the story
All of the covalent carbon-carbon bonds in unsaturated hydrocarbons share 2 pairs of electrons. True False
What is the greatest common factor (GCF) of 80 and 100?
i need help B-bulbs 1 and 2 would stay lit and bulb would go out C-bulbs 1 and 3 would stay lit and bulb 2 would go out​
which statement best describes the main impact television had on the vietnam war?
What is the definition of a double double carbon bond?
#3. Find the area of the triangle. Round to 2 decimal places. Thanks.
I CAN CONNECT DIVIDING BY A FRACTION TO MULTIPICATION 2 DIVIDED BY 1/9= 3 DIVIDED BY 1/2= 4 DIVIDED BY 1/4= 4 DIVIDED BY 1/6= 7 DIVIDED BY 1/3= 3 DIVIDED BY 1/1