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3 years ago

PLEASE HELP! Will mark brainliest!

1 answer:

OverLord2011 [107]3 years ago

3 0

Been a while since I've done this, but I think I remember what to do here:

The main technique is called "rise over run." The first number, the rise, is how far up the next dot on the right should be. The other number, the run, is how many spaces right the dot should be at. 1+(-2)=-1 and 8+3=11. The next dot on the right should be placed at (11,-1). If you're looking on the left, replace the addition with subtraction. 1-(-2)=3 and 8-3=5. The dot on the left should be (5,3). This means that the three dots on the slope are, in order, (5,3), (1,8), and (11,-1). To find the numbers after the third dot and before the first dot, simply repeat their respective equations.

I hope my memory was correct. Lol

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Solve using substituion -5x + y = -2 -3x + 6y = -12

sergiy2304 [10]

Answer:

Step-by-step explanation:

-5x + y = -2………… Equation 1

-3x + 6y = -12 ………… Equation 2

Using substitution

Make y the subject in equation 1 and substitute it into equation 2 and solve for x

That's

y = 5x - 2

We have

- 3x + 6( 5x - 2) = - 12

- 3x + 30x - 12 = - 12

27x = - 12 + 12

27x = 0

Divide both sides by 27

x = 0

Substitute x = 0 into y = 5x - 2

We have

y = 5(0) - 2

y = - 2

So the solutions are

Hope this helps you

4 0

3 years ago

Name the Solid.

Mila [183]

Answer:

The answer to your question is below

Step-by-step explanation:

Data

base = 11 km

height 1 = 7 km

height 2 = 10 km

a) Name of the solid = Triangular prism

b) The base is a triangle

c) Volume

Formula

Volume = 1/2 base x height 1 x height 2

-Substitution

Volume = 1/2 (11) x (7) x (10)

-Simplification

Volume = 1/2(770)

-Result

Volume = 385 km³

6 0

4 years ago

You have 8 gallons of lemonade to sell. You use cone-shaped cups that are 9 centimeters in diameter and 12 centimeters tall. Eac

andre [41]

You will need 119 cups to sell all of the lemonade.

Step-by-step explanation:

Given,

Diameter of cups = 9 cm

Radius of cup = $\frac{Diameter}{2}=\frac{9}{2}=4.5\ cm$

Height of cups = 12 cm

We will find volume of cup.

$Volume = \frac{1}{3}\pi r^2h\\$

Putting all the values

$Volume=\frac{1}{3}(3.14)(4.5)^2(12)\\\\Volume=\frac{1}{3}(3.14)(20.25)(12)\\\\Volume= \frac{763.02}{3}\\\\Volume= 254.34\ cm^3$

Therefore;

Each cup can hold 254.34 cubed centimeter of lemonade.

Number of gallons = 8

1 gallon = 3785 cm³

8 gallons = 3785*8 = 30280 cm³

Let,

x = Number of cups

Volume of lemonade in one cup * Number of cups = Volume of 8 gallons

254.34x=30280

Dividing both sides by 254.34

$\frac{254.34x}{254.34}=\frac{30280}{254.34}\\x=119.05$

Rounding off to nearest whole number

x = 119

You will need 119 cups to sell all of the lemonade.

Keywords: volume, division

Learn more about volume at:

#LearnwithBrainly

4 0

3 years ago

If the location you want to go is 270 miles away and you want to get there in 4.5 hours, at what constant speed do you need to d

LiRa [457]

You have to drive at 60 miles per hour

Speed=distance / time

5 0

3 years ago

Solve. 7x − 2 = −23 x =

Zielflug [23.3K]

7x-2=-23 add 2 to both sides to get 7x by itself
7x=-23+2 now add the right side
7x=-21 now divide both sides by 7
x=-21/7
x=-3

7 0

4 years ago

Read 2 more answers