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3 years ago

12

Hello :) Please help me solve this Explain answer

2 answers:

FrozenT [24]3 years ago

7 0

D is the correct answer i think

melisa1 [442]3 years ago

7 0

Answer:

A

Step-by-step explanation:

look at the graph I made and compare prices for both prices

m=29.04-7.26 /12-3

m = 21.78 / 9

m= 2.42

y-7.26=2.42(x-3)

y =2.42x

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The sum of the measures of a pair of alternate angles of two parallel lines is 210°. What are the measures of these two angles?

aniked [119]

The answer is 105 and 105 because they did not tell you that one had more than the other, so it's equal. Plus, it could not be 210 or over or 0 or less. It was spilt up equally between both alternate angles, and the lines are parallel, so the angles are equal. So just do 210/2 and get what one of the angles would be. Great question!

3 0

3 years ago

Please anwser this thank you!!

Kamila [148]

Step-by-step explanation:

v>29 or 29,infinity sign i used an app called and this is what it showed

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3 years ago

Read 2 more answers

What is a typical age (the mean) for the people who were at Movie A?

Snowcat [4.5K]

It is 39

Because you have to count the little dots all the way till it is around the most age.

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2 years ago

Silicon wafers are scored and then broken into the many small microchips that will he mounted into circuits. Two breaking method

antoniya [11.8K]

Answer:

a

The estimate is $- 0.0265\le K \le 0.0465$

b

Method B this is because the faulty breaks are less

Step-by-step explanation:

The number of microchips broken in method A is $n_1 = 400$

The number of faulty breaks of method A is $X_1 = 32$

The number of microchips broken in method B is $n_2 = 400$

The number of faulty breaks of method A is $X_2 = 32$

The proportion of the faulty breaks to the total breaks in method A is

$p_1 = \frac{32}{400}$

$p_1 = 0.08$

The proportion of the faulty to the total breaks in method B is

$p_2 = \frac{28}{400}$

$p_2 = 0.07$

For this estimation the standard error is

$SE = \sqrt{ \frac{p_1 (1 - p_1)}{n_1} + \frac{p_2 (1- p_2 )}{n_2} } }$

substituting values

$SE = \sqrt{ \frac{0.08 (1 - 0.08)}{400} + \frac{0.07 (1- 0.07 )}{400} } }$

$SE = 0.0186$

The z-values of confidence coefficient of 0.95 from the z-table is

$z_{0.95} = 1.96$

The difference between proportions of improperly broken microchips for the two breaking methods is mathematically represented as

$K = [p_1 - p_2 ] \pm z_{0.95} * SE$

substituting values

$K = [0.08 - 0.07 ] \pm 1.96 *0.0186$

$K = - 0.0265 \ or \ K = 0.0465$

The interval of the difference between proportions of improperly broken microchips for the two breaking methods is

$- 0.0265\le K \le 0.0465$

3 0

3 years ago

Which of the following ( 15, 20, 30, 57 ) is the product of exactly three different prime numbers?

Andrei [34K]

Answer:

30=2*3*5, so it's 30

Step-by-step explanation:

15=3*5, so it's not 15

20=2*2*5, so it's not 20

30=2*3*5, so it's 30

57=19*3, so it's not 57

3 0

2 years ago