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3 years ago

14

Predict the miles traveled in 5 hours at a rate of 189 miles in 3 hours

1 answer:

wel3 years ago

7 0

312 miles were traveled in 5 hours

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Find the Slope for <br> (3,-4) and (5,4)

REY [17]

The picture below shows the formula for calculating slope

In this example:
y2 = 4
y1 = -4
x2 = 5
x1 = 3
(These are the numbers you substitute into the formula)

Calculations:
4 - (-4) = 8
5 - 3 = 2
8/2 = 4

As you can see, after the values are substituted into the equation & simplified, the slope is equal to 4

8 0

1 year ago

Read 2 more answers

Find u and v only please:

tekilochka [14]

Every two triangles are similar. Therefore the sides of triangles are in proportion.

We have the equations:

1.

$\dfrac{3}{5}=\dfrac{3+x}{20}$ <em>cross multiply</em>

$5(3+x)=(3)(20)$ <em>divide both sides by 5</em>

$3+x=(3)(4)$

$3+x=12$ <em>subtract 3 from both sides</em>

$\boxed{x=9}$

--------------------------------------

2.

$\dfrac{3}{4}=\dfrac{9}{y}$ <em>cross multiply</em>

$3y=(4)(9)$

$3y=36$ <em>divide both sides by 3</em>

$\boxed{y=12}$

------------------------------------------

3.

$\dfrac{3}{5}=\dfrac{3+9+u}{60}$

$\dfrac{3}{5}=\dfrac{12+u}{60}$ <em>cross multiply</em>

$5(12+u)=(3)(60)$ <em>divide both sides by 5</em>

$12+u=(3)(12)$

$12+u=36$ <em>subtract 12 from both sides</em>

$\boxed{u=24}$

----------------------------------------------

4.

$\dfrac{3}{4}=\dfrac{24}{v}$ <em>cross multiply</em>

$3v=(4)(24)$

$3v=96$ <em>divide both sides by 3</em>

$\boxed{v=32}$

3 0

3 years ago

Find the distance between (-3, -4) and (2, -4)

Sergeu [11.5K]

Answer:

$\boxed{\sf{5}}$

Step-by-step explanation:

Distance can be calculated using a distance formula.

<h3>⇒ (-3,-4) and (2,-4)</h3>

<u>Distance formula:</u>

$\Longrightarrow: \sf{\sqrt{(x_2-x_1)^2+(y_2-y_1)^2} }$

<u>The distance between (-3,-4) and (2,-4) are:</u>

$\Longrightarrow: \sf{\sqrt{\left(2-\left(-3\right)\right)^2+\left(-4-\left(-4\right)\right)^2}}$

<u>Then, you solve.</u>

$\Longrightarrow:\sqrt{\left(2-\left(-3\right)\right)^2+\left(-4-\left(-4\right)\right)^2}=\boxed{\sf{5}}$

<u>Therefore, the distance between (-3,-4) and (2,-4) is 5, which is our answer.</u>

I hope this helps you! Let me know if my answer is wrong or not.

8 0

2 years ago

What is the value of the expression -5(3+4)?

777dan777 [17]

Answer:

-35

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers

lara [203]

Answer:

-3

Step-by-step explanation:

I just need 20 characters to help out so yeah

4 0

2 years ago