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3 years ago

Without using Desmos what is the complete factorization of 5x^2-20? Please show work , please help

Mathematics

1 answer:

Simora [160]3 years ago

3 0

Answer:

$5(x+2)(x-2)$

Step-by-step explanation:

Find the greatest common factor (GCF) of the 2 terms:

GCF is 5.

Factor out the GCF:

$5x^2-20\\5(\frac{5x^2}{5} -\frac{20}{5} )\\5(x^2-4)$

Rewrite as a difference of squares ( $a^2-b^2=(a+b)(a-b)$ ):

$5(x^2-2^2)\\5(x+2)(x-2)$

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Calculate the number of roots of <br> 2sin^3x-5sin^2x+2sinx=0<br> in the interval 0<=x<=pi

natita [175]

Answer:

Which points are collinear?

G, A, and T

G, E, and T

A, T, and E

G, A, and E

Step-by-step explanation:

6 0

2 years ago

Fashion for all jeans on sale for $13 designer pants has jeans on sale for $26 write tye total costs of 1,2,3 and 4 pairs of jea

kramer

Answer:

To purchase 4 pairs of jeans at Fashion for all would cost you $52, while buying 4 pairs of jeans from designer pants would cost $104.

Step-by-step explanation:

Fashion for all jeans:

1=13

2=26

3=39

4=52

Designer jeans

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5 0

3 years ago

An investment website can tell what devices are used to access their site. The site managers wonder whether they should enhance

lbvjy [14]

Answer: a) Unimodal and symmetric

b) 0.26

c) 0.038

Step-by-step explanation:

Given: Sample size of investors (n)= 131

True proportion of smartphone users(p) =26%

a) Since sampling distribution for the sample proportion is approximately normal when n is larger.

Normal distribution is Unimodal and symmetric.

So correct option : Unimodal and symmetric

b) mean of this sampling distribution = p = 0.26

c) standard deviation of the samplingdistribution = $\sqrt{\dfrac{p(1-p)}{n}}=\sqrt{\dfrac{0.26\times (1-0.26)}{131}}=\sqrt{0.00146870229008}$

$=0.0383236518364\approx0.038$

6 0

2 years ago

Y = 10x + 6 sollve this by doing what

Vladimir79 [104]

Answer:

x = -3/5

Step-by-step explanation:

y = 10x + 6

0 (- 6) = 10x + 6 (- 6)

-6/10 = 10x/10

-6/10 = x

-3/5 = x

6 0

2 years ago

shayla has 6 1/2 pounds of potato salad she needs to away into containers. each container only hodls 1 5/8 pounds. how many cont

sergiy2304 [10]

Answer:

She will need 4 containers

Step-by-step explanation:

First turn the fractions into decimals, 6 1/2 turns into 6.5, and 1 5/8 turns into 1.625, then divide.

6.5 divided by 1.625 equals 4

6 0

3 years ago