All categories

3 years ago

I really need help. The question is what is the length of the line?

Mathematics

2 answers:

Novay_Z [31]3 years ago

8 0

Answer:B.

Step-by-step explanation:

vovikov84 [41]3 years ago

7 0

5. You’re right! :)

You might be interested in

8 people want to share a large pizza.Use a ratio to express how many pieces each person gets if the pizza is divided equally

jenyasd209 [6]

Answer:

1/8

Step-by-step explanation:

6 0

2 years ago

A right rectangular prism is shown. What shape best describes the cross section cut perpendicular to the base of a right rectang

bulgar [2K]

C a rectangle. brainily says this is too short so I am writing more

3 0

3 years ago

The table represents some points on the graph of a linear function.

Sunny_sXe [5.5K]

Answer:

B. $-\frac{9}{2}$

Step-by-step explanation:

Rate of change of y with respect to x, can be calculated using any two of the pairs of values of the table, say, (-2, 12) and (0, 3).

Rate of change = $\frac{y_2 - y_1}{x_2 - x_1}$

Let,

$(-2, 12) = (x_1, y_1)$

$(0, 3) = (x_2, y_2)$

Plug in the values

Rate of change = $\frac{3 - 12}{0 - (-2)} = \frac{-9}{2} = -\frac{9}{2}$

7 0

2 years ago

The equation below can be used to find the length of a foot or forearm when you know one or the other. (length of the foot) = 0.

3241004551 [841]

This is child's play.

So, basically:
Y=Length of foot
X= Length of your forearm.
This is simple. Your equation is Y=0.860x + 3.302
So, if you have a forearm (x) that is 17 inches long, then plug in x as 17. This leaves you to evaluate for Y.
New equation: Y=0.860(17) +3.302
Work it out, you get: Y=14.62 + 3.302
Work that out, you get: Y= 17.922 inches long.
And of course, Y is the foot.

So, your answer: If the forearm is 17 inches long, then the foot is 17.922 inches long. Simple.

So, part 2:
Rate of change. Well, you need slope then, because that's the same thing.
Y=mx+b, Where m=slope
Your answer turns to be 0.860 inches per length of arm, for rate of change.

Skipping the data, as that's only something you'd know.

Yes, it is indeed a function. There can't be any exponents greater than 1 on the placeholder, and it's obviously not a straight line if you plug it in.

So yeah, it's a function.

~Hope this helps m8

5 0

3 years ago

Read 2 more answers

A statistics teacher taught a large introductory statistics class, with 500 students having enrolled over many years. The mean s

Vikki [24]

Answer:

Step-by-step explanation:

Given that a statistics teacher taught a large introductory statistics class, with 500 students having enrolled over many years.

Mean = 78 and std dev =10

Next time, sample size n was reduced to 25

For smaller sample size the mean was found to be = 83

The teacher wanted to know if teaching a smaller class was more effective and students performed better

ie comparison of two means of two samples should be done with different sample sizes but same teacher.

Hence hypothesis should be:

$H_0: \bar x =\bar y\\H_a : \bar x$

where x denotes the I sample and Y the second with 25 students.

4 0

3 years ago

I really need help. The question is what is the length of the line?​

I really need help. The question is what is the length of the line?