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3 years ago

Find the Value of X (angles)

Mathematics

2 answers:

STatiana [176]3 years ago

7 0

Answer:

x= 55

Step-by-step explanation:

The two angles add to 180 degrees since they form a straight line

2x+70 =180

Subtract 70 from each side

2x+70-70=180-70

2x= 110

Divide by 2

2x/2 = 110/2

x= 55

sergeinik [125]3 years ago

3 0

Answer:

x=55°

Step-by-step explanation:

2x+70=180°

x=55°

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Solve for k. J=k^2/4

Anna [14]

Answer: K = 0

Step-by-step explanation:

I'm pretty sure this is right or not.

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3 years ago

Please help me im almost done!

kumpel [21]

Answer:

if you divide both sides of -5x > 0 you get z > 0. This is incorrect because if you choose a value from the possible solutions such as z=6 and substitute it into the original equation you get -30 > 0, which is not true

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Step-by-step explanation:

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2 years ago

A food processor packages orange juice in small jars. The weights of the filled jars are approximately normally distributed with

Ratling [72]

Answer:

$P(X>10.983)=P(\frac{X-\mu}{\sigma}>\frac{10.983-\mu}{\sigma})=P(Z>\frac{10.983-10.5}{0.3})=P(z>1.61)$

And we can find this probability using the complement rule and with excel or the normal standard table:

$P(z>1.61)=1-P(z$

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".

Solution to the problem

Let X the random variable that represent the weights of a population, and for this case we know the distribution for X is given by:

$X \sim N(10.5,0.3)$

Where $\mu=10.5$ and $\sigma=0.3$

We are interested on this probability

$P(X>10.983)$

And the best way to solve this problem is using the normal standard distribution and the z score given by:

$z=\frac{x-\mu}{\sigma}$

If we apply this formula to our probability we got this:

$P(X>10.983)=P(\frac{X-\mu}{\sigma}>\frac{10.983-\mu}{\sigma})=P(Z>\frac{10.983-10.5}{0.3})=P(z>1.61)$

And we can find this probability using the complement rule and with excel or the normal standard table:

$P(z>1.61)=1-P(z$

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3 years ago

6. 5x – 2y = 17 2x + 3y = 3 How do i do elimination on this problem.

kolbaska11 [484]

Answer:

Add the equations in order to solve the first variable. Plug this value into the other equation in order to solve the remaining variables.

The point form is (3,-1)

The equation form is x = 3, y = -1

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3 years ago

Solve 7x- c= k for x. A. X = 7(k+C) B. x = 7(K-C) C. X = k+c/7 D. X= k-c/7

antoniya [11.8K]

Answer:

Step-by-step explanation:

you add c to both side which will then make it 7x=k+c then you would divide 7 from both sides leaving you with x=k+c/7. Except 7 will be under the k and c.

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3 years ago