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4 years ago

If p stays constant and u is doubled what happens to e? given U=EP

Mathematics

1 answer:

Stolb23 [73]4 years ago

4 0

We are given the expression:

U = E * P

The equality symbol “ = “ means that for all cases, the value of U and E * P must always be equal. This means that whatever happens on the left side, must equally happen on the right side.

So what this actually means is that, if we double U so we must also double the expression E * P, that is:

2 U = 2 (E * P)

However since P stays constant in the process, therefore only E is changed, hence:

2 U = P * 2 E

So we can see that E is also doubled.

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What is the completely factored from of 9x2+24x+16

dezoksy [38]

Answer:

(3x+4)(3x+4) is factor of given expression.

B is correct.

Step-by-step explanation:

We are given an expression $9x^2+24x+16$

Formula: $a^2+2ab+b^2=(a+b)^2$

First we write each term as perfect square as formula.

$\Rightarrow 9x^2+24x+16$

$\Rightarrow (3x)^2+2\cdot 3x\cdot 4+4^2$

Using formula , a=3x and b=4

$\therefore (3x)^2+2\cdot 3x\cdot 4+4^2=(3x+4)^2$

Now we write same number two times.

Hence, (3x+4)(3x+4) is factor of given expression.

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3 years ago

What is the discriminant? What does it tell you about the types of solutions you can have?

Annette [7]

Answer:

do you mean "what is A descriminate?"

Step-by-step explanation:

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3 years ago

Watching TV: In 2012, the General Social Survey asked a sample of 1326 people how much time they spent watching TV each day. The

Varvara68 [4.7K]

Answer:

We fail to reject H₀ as there is insufficient evidence at 0.5% level of significance to conclude that the mean hours of TV watched per day differs from the claim.

Step-by-step explanation:

This is a two-tailed test.

We first need to calculate the test statistic. The test statistic is calculated as follows:

Z_calc = X - μ₀ / (s /√n)

where

X is the mean number of hours
μ₀ is the mean that the sociologist claims is true
s is the standard deviation
n is the sample size

Therefore,

Z_calc = (3.02 - 3) / (2.64 /√(1326))

= 0.2759

Now we have to calculate the z-value. The z-value is calculated as follows:

z_α/2 = z_(0.05/2) = z_0.025

Using the p-value method:

P = 1 - α/2

= 1 - 0.025

= 0.975

Thus, using the positive z-table, you will find that the z-value is

1.96.

Therefore, we reject H₀ if | Z_calc | > z_(α/2)

Thus, since

| Z_calc | < 1.96, we fail to reject H₀ as there is insufficient evidence at 0.5% level of significance to conclude that the mean hours of TV watched per day differs from the claim.

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3 years ago

What steps do I take to solve y+2>1/2-2 and the solution

kakasveta [241]

y+2>1/2-2 looks a little strange. Is it OK to combine the last 2 terms?

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3 years ago

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Taya2010 [7]

Answer:

It owuld be -2

Step-by-step explanation:

Yes

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