All categories

2 years ago

What is the factorization of the expression below 16x2 - 49?

Mathematics

2 answers:

mrs_skeptik [129]2 years ago

7 0

$16 {x}^{2} - 49 \\ = {(4x)}^{2} - {7}^{2} \\ = (4x - 7)(4x + 7)$

Vilka [71]2 years ago

4 0

Answer:

16 {x}^{2} - 49 \\ = {(4x)}^{2} - {7}^{2} \\ = (4x - 7)(4x + 7)

Step-by-step explanation:

You might be interested in

Scott likes to run long distances. He can run 20 \text{ km}20 km20, start text, space, k, m, end text in 858585 minutes. He want

aleksandrvk [35]

Answer:

Scott will take 221 minutes to run 52 km

Step-by-step explanation:

Speed

The speed of an object can be calculated with the formula:

$\displaystyle v=\frac{d}{t}$

Where d is the distance traveled and t is the time taken.

Scott can run d=20 km in 85 minutes. Thus, his speed is:

$\displaystyle v=\frac{20}{85}\ km/min$

Now he wants to know how many minutes it will take him to run d=52 km. Solving the formula for t:

$\displaystyle t=\frac{d}{v}$

Since the speed has been already determined:

$\displaystyle t=\frac{52}{\frac{20}{85}}$

Multiplying by the reciprocal of the denominator:

$\displaystyle t=52*\frac{85}{20}$

t = 221 min

Scott will take 221 minutes to run 52 km

4 0

3 years ago

Read 2 more answers

Can someone help me please.

ANTONII [103]

8. is 16

10. is 5
11. is 10

7 0

2 years ago

Read 2 more answers

Which expression is equivalent to 76x + 64?

Talja [164]

A.

4(19x + 16)

Hope this helps!

5 0

2 years ago

10 POINTS!!!

WINSTONCH [101]

Answer:

2x^3 + 6x^2

Step-by-step explanation:

Volumen = area * height

You already had the area which is:

x^2 + 3x

and the heigth is 2x

Volumen = (x^2 + 3x)* 2x

Volumen = 2x^3 + 6x^2

3 0

3 years ago

Read 2 more answers

Simplify the expression. <img src="https://tex.z-dn.net/?f=%5Csqrt%7B28c%5E%7B5%7Dd%5E%7B2%7D%20%7D" id="TexFormula1" title=

Flura [38]

Hopefully this helps

5 0

3 years ago