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3 years ago

Solve for x..........10 points*

Mathematics

2 answers:

shusha [124]3 years ago

4 0

Answer:

=> 130°

Step-by-step explanation:

Here's your solution

=> we know that both angles are equal

=> because , both are vertical angle

=> so , 8x + 34 = 130°

=> 8x = 130° - 34

=> 8x = 96°

=> x = 96/8

=> x = 12°

=> angle is = (12*8)+ 34

=> 130°

hope it helps

Ivanshal [37]3 years ago

3 0

Answer:

$\huge\boxed{\sf x = 12}$

Step-by-step explanation:

8x + 34 = 130 (Vertical Angles are Equal)

Subtract 34 to both sides

8x = 130 - 34

8x = 96

Divide both sides by 8

x = 96 / 8

x = 12

$\rule[225]{225}{2}$

Hope this helped!

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What is the quotient of 30 and 3? A 33 B 27 C 90 D 10

Komok [63]

I am just guessing but you might try A

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2 years ago

The Rocky Mountain district sales manager of Rath Publishing Inc., a college textbook publishing company, claims that the sales

andrezito [222]

Answer:

$t=\frac{44-42}{\frac{1.9}{\sqrt{40}}}=6.657$

$p_v =P(t_{(39)}>6.657)=3.17x10^{-8}$

If we compare the p value and the significance level given $\alpha=0.01$ we see that $p_v$ so we can conclude that we have enough evidence to reject the null hypothesis, so we can conclude that the true mean is higher than 42 at 1% of signficance.

Step-by-step explanation:

Data given and notation

$\bar X=44$ represent the sample mean

$s=1.9$ represent the sample standard deviation

$n=40$ sample size

$\mu_o =42$ represent the value that we want to test

$\alpha=0.01$ represent the significance level for the hypothesis test.

t would represent the statistic (variable of interest)

$p_v$ represent the p value for the test (variable of interest)

State the null and alternative hypotheses.

We need to conduct a hypothesis in order to check if the mean is higher than 42, the system of hypothesis would be:

Null hypothesis: $\mu \leq 42$

Alternative hypothesis: $\mu > 42$

If we analyze the size for the sample is > 30 but we don't know the population deviation so is better apply a t test to compare the actual mean to the reference value, and the statistic is given by:

$t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}$ (1)

t-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".

Calculate the statistic

We can replace in formula (1) the info given like this:

$t=\frac{44-42}{\frac{1.9}{\sqrt{40}}}=6.657$

P-value

The first step is calculate the degrees of freedom, on this case:

$df=n-1=40-1=39$

Since is a one side test the p value would be:

$p_v =P(t_{(39)}>6.657)=3.17x10^{-8}$

Conclusion

3 0

3 years ago

What is the answer to 3v − 2 = 1

vitfil [10]

Answer:

−

3v-2=1

3v−2=1

Solve

Add

to both sides of the equation

−

3v-2=1

3v−2=1

−

3v-2+{\color{#c92786}{2}}=1+{\color{#c92786}{2}}

3v−2+2=1+2

Simplify

Add the numbers

3v=3

Divide both sides of the equation by the same term

3v=3

\frac{3v}{{\color{#c92786}{3}}}=\frac{3}{{\color{#c92786}{3}}}

33v=33

Simplify

Solution

Step-by-step explanation:

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2 years ago

Read 2 more answers

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stiks02 [169]

Answer:

C) Neither

Step-by-step explanation:

y = -1/4x + 8

-2x + 8y = 4

To compare the slopes we need to convert the second equation to the same form as the first ( that is slope/intercept form).

-2x + 8y = 4

8y = 2x + 4

Divide through by 8:-

y = 1/4 x + 1/2

The slope of the first line is -1/4 and its 1/4 for the second line.

If the slopes were the same the lines would be parallel and if they were perpendicular their product would be = -1.

The product is 1/4 * -1/4 = -1/16

So they are neither parallel nor perpendicular.

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3 years ago

What is 3 ( y + 10 ) in distributive property

olga2289 [7]

Answer:

Distributive Property: a(b+c) = ab+ac

$3(y + 10) = \boxed{3y + 30}✓$

(3y+30) is the right answer.

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