3 years ago

What is the factored form of the expression? 49b^2 – 64

Mathematics

1 answer:

nika2105 [10]3 years ago

4 0

Answer:

(7b-8) (7b+8)

Step-by-step explanation:

49b^2 – 64

This is the difference of squares

(a^2 -c^2) = (a-c) (a+c)

a^2 = 49b^2 so a = 7b

c^2 = 64 so c = 8

(49b^2 -64) = (7b-8) (7b+8)

You might be interested in

Which of the following coordinate points have a y-value of 1? Select all that apply.

Nimfa-mama [501]

Answer:

B is the right answer,...B) (6, 1)

Step-by-step explanation:

no steps just a pencil,paper,caculator,white board, and dry erase marker to help u solve this

8 0

3 years ago

Read 2 more answers

Dominic and Terrell plan to start their weekend backpacking trip on Friday at 4:20 P.M, and return home on Sunday at 5:40 A.M. H

Aleonysh [2.5K]

I think the answer is 4.20 hours and minutes planning the last road trip .

6 0

3 years ago

HELPP ASaPP I’ll mark you as brainlister

nika2105 [10]

Answer:

BC ≈ 8.9 units

Step-by-step explanation:

Using the cosine ratio in the right triangle

cos36° = $\frac{adjacent}{hypotenuse}$ = $\frac{BC}{AB}$ = $\frac{BC}{11}$ ( multiply both sides by 11 )

11 × cos36° = BC , then

BC ≈ 8.9 ( to the nearest tenth )

5 0

2 years ago

Read 2 more answers

A study of king penguins looked for a relationship between how deep the penguins dive to seek food and how long they stay underw

Serggg [28]

Answer:

$b = 0.0138$

Step-by-step explanation:

Given

Regression Equation:

$DD=2.69+0.0138D$

Required

Determine the slope of the regression line

The equation of regression is of the form

$Y = a + bX$

Where b represents the slope;

Compare $Y = a + bX$ to the given equation

$DD=2.69+0.0138D$

We have that:

$Y = DD$

$a = 2.69$

$b = 0.0138$

$X = D$

Hence; the slope is:

$b = 0.0138$

7 0

3 years ago

SOLOVE THIS QUESTION PLSS

pantera1 [17]

Answer:

positive its 18 feet

Step-by-step explanation:

5 0

2 years ago