03-06-2020
Mathematics

contestada

Evaluate the expression 7a² - 3b³ when a) a= 4, b= -2 b) a= -8, b=5
You will end up with 2 answers here, substitute and solve.

Respuesta :

adekunle76 adekunle76

03-06-2020

Answer

Step-by-step explanation:

7a²-3b²

Replace a=4, b=2

7*4²-3*2²

= 112-12

= 100 first answer

7a²-3b²

Replace a=8, b=5

7*8²-3*5²

448-75

= 373 second answer

Answer Link

Otras preguntas

Find each of the following products by first using division and then multiplication each will be a while number answer

5/6 year = how many months

8x-24y = 1-x+3y = 1 How do I solve the linear equations using elimination?

sally, a journalism student, counted the number of pages in several major magazines. Number of pages Number of magazines 118 4 152 4 169 2 is the number of page

Use a rectangular array to write the product in standard form 3(4b + 12c + 11)

What mass of sulfur trioxide and what is the limiting reactant?

How wide is the space betweeneach number on this clock?

Find Q. round your final answer to the nearest tenth

Which of the following names the figure in the diagram below?O A. TriangleO B. PrismO C. PolygonO D. PyramidO E. CylinderO F. Cube

What is a another way to write 3/4? A.3+4 B.3-4 C.3*4 D.3/4