3 years ago

What is the value of 4a3 – 2b2 + 5 when a = 3 and b = −2?

Mathematics

2 answers:

kenny6666 [7]3 years ago

8 0

4a(3)-2b(2)+5
4(3)(3)-2(-2)(2)+5
12(3)-(-4)(2)+5
36-(-8)+5
44+5
49
The answer is 49.

Fittoniya [83]3 years ago

6 0

4a3 – 2b2 + 5

= 4 * 3^3 - 2 * (-2)^2 + 5

= 4 * 27 - 2 * 4 + 5

= 96 - 8 + 5

= 93

You might be interested in

A tree cast a shadow of 30m long and a 2m stick casts one that is 3m long. As show in the below diagram how tall is the tree?

PSYCHO15rus [73]

Answer:

20 m

Step-by-step explanation:

We have similar triangles here.

BC║DE, AB║AD and AC║AE ⇒ ΔADE ~ ΔABC

The ratio of corresponding sides of similar triangles is same:

BC/DE = AC/AE
BC / 2 = 30/3
BC / 2 = 10
BC = 2*10
BC = 20 m

6 0

3 years ago

Read 2 more answers

A spinner is divided into 8 equal sections, and each section contains a number from 1 to 8. What is the probability of the spinn

alukav5142 [94]

Answer:

more than likely none

Step-by-step explanation:

because the is no number higher than 8 that can go into 8 evenley

8 0

3 years ago

Read 2 more answers

Write an equation that models the sequence 6, 12, 24, 48... A) y = 6x B) y = 2x C) y = 6x2 D) y = 6(2x-1)

monitta

The answer is B) y=2x

8 0

3 years ago

Read 2 more answers

What is the answer for 6x+2y=10

Arturiano [62]

I’m gunna to be honest wit u idk like 7

4 0

3 years ago

F(x) = 2(x+3)2 -7 a= h= k=

vlabodo [156]

Answer:

Step-by-step explanation:

In vertex form, the equation is

y = a(x-h)^2 + k

So just read off the values!

6 0

2 years ago