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sergey [27]
3 years ago
13

Simplify the expression *please explain*

Mathematics
1 answer:
gtnhenbr [62]3 years ago
4 0
To simplify √((2x)^2)√2y, we must multiply the indices of both roots and the coefficients that within both roots. As we can see bellow, we get a root which has index 4:

 =((2x)^(2y))^1/4

 Finally, the factor (2x)^2 has an exponent which is divisible by the index of the root, so it can be simplified, as it's shown in the following step:

 = (2x)(2y)^1/4


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Find the value or values of y in the quadratic equation y2 + 4y + 4 = 7
Tema [17]
Hello,

y²+4y+4=7
==>(y+2)²-7=0
==>(y+2-√7)(y+2+√7)=0
==>y=-2+√7 or y=-2-√7
6 0
3 years ago
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Can I please have help on this problem of find the the value of x
Anvisha [2.4K]

Answer:

x = 14.

Step-by-step explanation:

Knowing (8x+6) is equal to 118.

You need to solve for x.

Subtract 6 from 118 = 112.

112 / 8 = 14.

Therefore x = 14.

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Step-by-step explanation:

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3 0
3 years ago
In the United States, 36 percent of the people have a blood type that is A positive. From a random sample of 150 people from Nor
djverab [1.8K]

Answer:

The standard deviation used in the test statistic is 0.04.

Step-by-step explanation:

A single proportion <em>z</em>-test can be used to determine whether the proportion of people in Norway with a blood type of A positive is different from that in the United States.

The proportion of people in Norway with a blood type of A positive is 36% or 0.36.

The hypothesis can be defined as:

<em>H₀</em>: The proportion of people in Norway with a blood type of A positive is 36%, i.e. <em>p</em> = 0.36.

<em>Hₐ</em>: The proportion of people in Norway with a blood type of A positive is different from 36%, i.e. <em>p</em> ≠ 0.36.

The test statistic is:

z=\frac{\hat p-p}{\sqrt{\frac{p(1-p)}{n}}}

The information provided is:

<em>p</em> = 0.36

<em>n</em>  = 150

Compute the standard deviation used in the test statistic as follows:

\sigma=\sqrt{\frac{p(1-p)}{n}}

   =\sqrt{\frac{0.36\times (1-0.36)}{150}}

   =\sqrt{0.001536}\\=0.03919184\\\approx 0.04

Thus, the standard deviation used in the test statistic is 0.04.

5 0
3 years ago
Shade the grid to represent the ratio 9/25. Then find a percent equivalent to the given ratio.
Amanda [17]

Answer:

The percentage is 36%

Step-by-step explanation:

We are given

Shade the grid to represent the ratio 9/25

so, we have ratio as

=\frac{9}{25}

we know that for finding percent , we multiply ratio by 100

so, we can multiply by 100 here

=\frac{9}{25}\times 100

now, we can simplify it

=9\times 4

=36

So,

The percentage is 36%

7 0
4 years ago
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