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3 years ago

1/4x= -2 solving equations

Mathematics

2 answers:

Julli [10]3 years ago

8 0

(1/4)x=-2 -- multiply by 4

x=-8

GenaCL600 [577]3 years ago

3 0

1/4 x = -2

Multiply each side of the equation by 4 :

 x = -8

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Which expression is equivalent

Tatiana [17]

Given expression is

$\sqrt[4]{\frac{16x^{11}y^8}{81x^7y^6}}$

Radical is fourth root

first we simplify the terms inside the radical

$\frac{x^{11}}{x^7}=x^4$

$\frac{y^(8)}{y^6}=y^2$

So the expression becomes

$\sqrt[4]{\frac{16x^4y^2}{81}}$

Now we take fourth root

$\sqrt[4]{16} = 2$

$\sqrt[4]{81} = 3$

$\sqrt[4]{x^4} = x$

We cannot simplify fourth root (y^2)

After simplification , expression becomes

$\frac{2x\sqrt[4]{y^2}}{3}$

Answer is option B

8 0

3 years ago

Assume that women's heights are normally distributed with a mean given by mu equals 62.5 in, and a standard deviation given by

kirza4 [7]

Answer: a) The probability is approximately = 0.5793

b) The probability is approximately=0.8810

Step-by-step explanation:

Given : Mean : $\mu= 62.5\text{ in}$

Standard deviation : $\sigma = \text{2.5 in}$

a) The formula for z -score :

$z=\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}$

Sample size = 1

For x= 63 in. ,

$z=\dfrac{63-62.5}{\dfrac{2.5}{\sqrt{1}}}=0.2$

The p-value = $P(z$

$0.5792597\approx0.5793$

Thus, the probability is approximately = 0.5793

b) Sample size = 35

For x= 63 ,

$z=\dfrac{63-62.5}{\dfrac{2.5}{\sqrt{35}}}\approx1.18$

The p-value = $P(z$

$= 0.8809999\approx0.8810$

Thus , the probability is approximately=0.8810.

6 0

4 years ago

I got more points so here is more

BartSMP [9]

Answer:

woah thankssss a lotttt

7 0

3 years ago

Read 2 more answers

The players height is standard deviation above the mean?

Alona [7]

Answer:

Step-by-step explanation:

Z score is the number of standard devations above the mean.

For example if z=1, the data value is 1 st. dev. above the mean.

So, z=1.95, so the player's heigh is 1.95 st. dev. above the mean.

4 0

3 years ago

What multiplied by what other then 2 equals 232

AlekseyPX

(+/-) 1 x (+/-) 232 = 232
(+/-) 2 x (+/-)116 = 232
(+/-) 4 x (+/-) 58 = 232
(+/-) 8 x (+/-) 29 = 232
(+/-) 29 x (+/-) 8 = 232
(+/-) 58 x (+/-) 4 = 232
(+/-) 116 x (+/-) 2 = 232
(+/-) 232 x (+/-) 1 = 232

5 0

3 years ago