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2 years ago

What does AB=2.3cm mean

Mathematics

1 answer:

Galina-37 [17]2 years ago

6 0

If AB is a line segment then it’s the length of the line segment

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What is the average (with 0 decimal places) across all schools for the total score? Group of answer choices 1287 1215 1221 1229

Irina18 [472]

Answer:

See explanation

Step-by-step explanation:

Required

The average

The data whose average is to be calculated are not given.

However, the formula to calculate the average is:

$\bar x = \frac{\sum x}{n}$

Assume the data is:

$1287\ 1215\ 1221\ 1229$

This means that the number of schools is 4

So:

$\bar x = \frac{1287+ 1215+ 1221+ 1229}{4}$

$\bar x = \frac{4952}{4}$

$\bar x = 1238$

<em>The average of the assumed data is 1238</em>

5 0

2 years ago

A ball is shot upward from a slingshot at a velocity of 15 m/s the height of the ball after t seconds is given by h(t)=10+ 5t+1/

otez555 [7]

Answer:

The instantaneous velocity after eight seconds is 9 m/s

Step-by-step explanation:

Given as :

The ball shot upward with velocity of 15 m/s

The height of the ball after t sec is given as h(t) = $10 + 5t + \frac{1}{4}t^{2}$

Now, The instantaneous velocity after 8 sec = $\frac{\partial h(t)}{\partial t}$

Or, The instantaneous velocity = $\frac{\partial (10 +5t + \frac{1}{4}t^{2})}{\partial t}$

or, The instantaneous velocity = $5 + \frac{1}{4}\times 2 t$

Now at t = 8 sec

The instantaneous velocity = 5 + 4 = 9 m/s

Hence The instantaneous velocity of ball at t = 8 sec , is 9 m/s Answer

3 0

2 years ago

If f(x) = x2 and g(x) = x - 3, then f(g(x)) = ?

attashe74 [19]

Answer:

the answer is E

Step-by-step explanation:

hope this helps!

8 0

2 years ago

Kenny ran 2/7 of a mile 1/4 of an hour.at this rate,how many miles can Kenny run in an hour?

bixtya [17]

Answer:

1.142857

Step-by-step explanation:

2/7 *4 = 2x7/7x1 = 8/7

6 0

2 years ago

The linear combination method is applied to a system of equations as shown.

olga_2 [115]

If you apply the linear combination method to the system like:
<span>4(.25x + .5y = 3.75) → x + 2y = 15
(4x – 8y = 12) → x – 2y = 3
2x = 18
Then you can be sure that the solution of all this system is: (9,3). Hope this si what you were looking for</span>

7 0

2 years ago

Read 2 more answers