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3 years ago

9d-2d+4d=32 Need help

Mathematics

1 answer:

Luden [163]3 years ago

8 0

Answer:

=2.90d

Step-by-step explanation:

i think is that hope IT help

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A baseball is hit so that its height in feet after t seconds is s(t)=-5t^2+36t+5 How high is the baseball after 1 second? Find t

d1i1m1o1n [39]

Answer:

Answers are below

Step-by-step explanation:

The baseball is 36 ft in the air after 1 second. The maximum height of the baseball of 69.8 ft.

To find these answers, I used the graph below.

5 0

3 years ago

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Nancy sold a house for $225,900 and earned 4% commission. How much did Nancy earn for the sale of this house?

timurjin [86]

Answer:

$9,036.00

Step-by-step explanation:

225900×.04

4%= .04

4. Move decimal twice to the left=.04

3 0

3 years ago

Associations In Data:Question 10

Karo-lina-s [1.5K]

Answer:

$\bar X = \frac{62+63+68+72+79+80+83+93+94+95}{10}= 78.9$

$|62-78.9| = 16.9$

$|63-78.9| = 15.9$

$|68-78.9| = 10.9$

$|72-78.9| = 6.9$

$|79-78.9| = 0.1$

$|80-78.9| = 1.1$

$|83-78.9| = 4.1$

$|93-78.9| = 14.1$

$|94-78.9| = 15.1$

$|95-78.9| = 16.1$

$MAD = \frac{\sum_{i=1}^n |X_i -\bar X|}{n}$

And replacing we got:

$MAD =\frac{16.9+15.9+10.9+6.9+0.1+1.1+4.1+14.1+15.1+16.1}{10}= 10.12$

And the best anwer is

10.12

Step-by-step explanation:

We have the following data given:

62 63 68 72 79 80 83 93 94 95

And we need to begin finding the mean with the following formula:

$\bar X = \frac{\sum_{i=1}^n X_i}{n}$

And replacing we got:

$\bar X = \frac{62+63+68+72+79+80+83+93+94+95}{10}= 78.9$

Now we can find the mean absolute deviation like this:

$|62-78.9| = 16.9$

$|63-78.9| = 15.9$

$|68-78.9| = 10.9$

$|72-78.9| = 6.9$

$|79-78.9| = 0.1$

$|80-78.9| = 1.1$

$|83-78.9| = 4.1$

$|93-78.9| = 14.1$

$|94-78.9| = 15.1$

$|95-78.9| = 16.1$

And finally we can find the mean abslute deviation with the following formula:

$MAD = \frac{\sum_{i=1}^n |X_i -\bar X|}{n}$

And replacing we got:

$MAD =\frac{16.9+15.9+10.9+6.9+0.1+1.1+4.1+14.1+15.1+16.1}{10}= 10.12$

And the best anwer is

10.12

8 0

4 years ago

A triangle has side lengths of 7 in., 9 in., and 11 in. Determine whether this is a right triangle and why.

Harlamova29_29 [7]

Answer:

Not a right triangle. See below for my reasoning.

Step-by-step explanation:

If this is a right triangle, then the sum of the squares of the two shorter sides will equal the square of the longest side: 7^2 + 9^2 = 11^2 => 49 + 81 = 121 But this is false.

8 0

3 years ago

!!HURRY IM BEING TIMED 40PTS!!

Rudik [331]

The average rate of change in a function from a to b is

$\frac{f(b)-f(a)}{b-a}$ .

For the left function, from x = 4 to x = 5, the rate of change is

$\frac{100-64}{5-4} = \frac{36}{1} = 36$ .

For the right function, the rate of change is

$\frac{1024-256}{5-4} = \frac{768}{1} = 768$

Using a ratio to compare the right function's growth rate with that of the left function, you get $768 \div 36 \approx 21.3$ .

The right function is growing approximately 21 times faster than the left function (over the interval from 4 to 5).

3 0

3 years ago

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