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3 years ago

(-2, -3)and (-5, -3) ?

Mathematics

1 answer:

Anni [7]3 years ago

6 0

Answer:

slope is zero equation is y=-3

Step-by-step explanation:

since there is no change in y and they cancel out so you just 0.

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Sam's track coach stands at the center of a circular track timing Sam's run. Which graph shows Sam's relative distance from the

timofeeve [1]

It shows the distance between him and the coach getting the “motion” of his running time. It’s like the circle with the line in the middle...

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3 years ago

What is (X)+43\43-12(89+56)

Setler79 [48]

Answer:

I got x = -1739

but I put both of the 43 in fraction form so hope this helped

5 0

4 years ago

What is the sum of the polynomials?

Lorico [155]

A. is the answer look at the attached photo

3 0

3 years ago

Read 2 more answers

1.Suppose that scores on a knowledge test are normally distributed with a mean of 71 and a standard deviation of 6

Degger [83]

Answer:

a) For this case we can see the distribution in the figure attached is a bell shaped graph and symmetrical around 71

b) $z = \frac{76-71}{6}= 0.833$

We can see the value of 76 labeled in the second picture attached

c) $P(X>76)$

And using the z score we have this using the normal standard table or excel:

$P(Z>0.833) = 1-P(Z$

d) $n = 185*0.202= 154.16$

We can say that about 154 and 155 students scored higher than Angelica

Step-by-step explanation:

We know that X represent the random variable scores of knowledge test and is given by:

$X \sim N (\mu = 71, \sigma =6)$

Part a

For this case we can see the distribution in the figure attached is a bell shaped graph and symmetrical around 71

Part b

For this case the z score is given by:

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

And replacing we got:

$z = \frac{76-71}{6}= 0.833$

We can see the value of 76 labeled in the second picture attached

Part c

We want this probability:

$P(X>76)$

And using the z score we have this using the normal standard table or excel:

$P(Z>0.833) = 1-P(Z$

Part d

For this case we can find the number desired like this:

$n = 185*0.202= 154.16$

We can say that about 154 and 155 students scored higher than Angelica

6 0

4 years ago

a scale model of a statue is 7 inches tall. The scale of the model is 1in./1.5ft. what is the actual height of the statue?

Bond [772]

So first we would get the scale to the same units. So we would take 1in:1.5ft and convert the feet to inches. 1.5 x 12 = 18
So the scale of the model is 1:18
now just multiply 7 by 18 to get-
126 inches, or 10.5 feet

3 0

3 years ago

(-2, -3)and (-5, -3) ?​

(-2, -3)and (-5, -3) ?