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3 years ago

Finding the Slope: Identify the slope. Will give 5 points if correct

Mathematics

2 answers:

Varvara68 [4.7K]3 years ago

7 0

It would be -3 this is because you do rise/ run or y/x so you have 3/1 and it is a negative slope so -3

lubasha [3.4K]3 years ago

5 0

Answer:

-3

Step-by-step explanation:

Fall 3 over 1

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Need help with this equation

NeX [460]

Answer:

D. 28x + 14 + 3 = - 67

Step-by-step explanation:

Given 7 ( 4x + 2 ) + 3 = - 67

our first step would be to distribute the 7

7 * 4x = 28x

7 * 2 = 14

we would be left with 28x + 14 + 3 = -67 which corresponds with "D"

4 0

3 years ago

Read 2 more answers

There are 16 red shirts and some black shirts hanging in the store. The ratio of the number of red shirts to that of black shirt

WITCHER [35]

Answer:

If 5 red shirts are added into the box, 7 : 8 is the new ratio.

Step-by-step explanation:

The number of red shirts = 16

Let the number of black shirts = k

Now as the ratio of Red Shirts : Black Shirt = 2 : 3

By RATIO OF PROPORTIONALITY:

⇒ $\frac{16}{k} = \frac{2}{3}$

or, $k = 16 \times \frac{3}{2} = 24$

Hence, the number of Black Shirts in the Store = 24

Now, new number pf red shirts = 16 + 5 = 21

So, by the proportionality again, ratio is

$\frac{21}{24} = 7:8$

Hence, the new ratio of Red shirts : Black Shirts = 7 : 8

7 0

4 years ago

The dashed line shows how this cylinder will be sliced. Which shows the shape of the cross-section if a plane slices the cylinde

jeka57 [31]

Answer:

C (third option)

Step-by-step explanation:

because the line is going straight through the figure it would be a circular shape

5 0

3 years ago

A ball is thrown upward and outward from a height of 77 feet. the height of the ball, f(x), in feet, can be modeled by f left

Oksi-84 [34.3K]

From the given function modeling the height of the ball:
f(x)=-0.2x^2+1.4x+7
A] The maximum height of the ball will be given by:
At max height f'(x)=0
from f(x),
f'(x)=-0.4x+1.4
solving for x we get:
-0.4x=-1.4
x=3.5ft
thus the maximum height would be:
f(3.5)=-0.2(3.5)^2+1.4(3.5)+7
f(3.5)=9.45 ft

b]
How far from where the ball was thrown did this occur:
from (a), we see that at maximum height f'(x)=0
f'(x)=-0.4x+1.4
solving for x we get:
-0.4x=-1.4
x=3.5ft
This implies that it occurred 3.5 ft from where the ball was thrown.

c] How far does the ball travel horizontally?
f(x)=-0.2x^2+1.4x+7
evaluationg the expression when f(x)=0 we get:
0=-0.2x^2+1.4x+7
Using quadratic equation formula:
x=-3.37386 or x=10.3739
We leave out the negative and take the positive answer. Hence the answer 10.3739 ft horizontally.

6 0

4 years ago

What is the value of m in the figure below? If necessary,round your answer to the nearest tenth of a unit

bogdanovich [222]

Answer:

Step-by-step explanation:

It turns out from similar triangles, that 7/BD = BD / 18. Use triangles ABD and BDC to show this relationship. Solving this equation will give you BD

BD^2 = 7*18

BD^2 = 126 Just leave it in this form. Do your rounding at the end.

Because triangle BDC is a right angle triangle, use the Pythagorean Theorem to solve for m

m^2 = BD^2 + 7^2

m^2 = 126 + 49

m^2 = 175 Take the square root of both sides.

sqrt(m^2) = sqrt(175)

m = 13.22

so the answer is D

3 0

3 years ago

Finding the Slope: Identify the slope. Will give 5 points if correct​

Finding the Slope: Identify the slope. Will give 5 points if correct