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kkurt [141]
3 years ago
7

PLEASE HELP ILL CHOOSE BRAINLIEST!!!!

Mathematics
2 answers:
Komok [63]3 years ago
7 0
4 gallons of water=30 plants

x gallons of water ?=45 plants 

to get the answer you have to follow these steps

4*45=x*30

180=30*x /30

x=180/30

x=6 gallons of water
MAXImum [283]3 years ago
4 0
30÷4=7.5
45÷7.5=6
you will need about 6 gallons of water to fill it.
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X × x = x^2
x × -3 = -3x
3 × x = 3x
3 × -3 = -9

x^2 + 3x - 3x - 9
So I would agree with C because the -3x and the 3x cancel each other out. I hope this helps!
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3 years ago
How many 3/5 are in 1 4/5
Kitty [74]
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3/5 x 3 = 9/5

9/5 = 1 4/5
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Please help if possible! <br> Match the angle relationship with each given angle pair.
steposvetlana [31]

Answer:

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Step-by-step explanation:

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2 years ago
Find the height of the pyramid round answer to the nearest meter
Fantom [35]
What are the other measurements? 
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3 years ago
A business executive bought 40 stamps for
alekssr [168]

Answer:

32 33-cent stamps, 8 23-cent stamps

Step-by-step explanation:

In order to solve this question, we need to set up a system of equations. Also known as solving for two variables (the number of each stamp).

Let's set x to be the number of 33-cent stamps. Similarly, let's set y to be the number of 23-cent stamps.

To make our first equation, let's think about the number of stamps total we have. We can say:

x + y =40

<em>(AKA - The number of 33-cent stamps, plus the number of 23-cent stamps, equals 40 stamps.)</em>

Now, let's make an equation for the cost of these stamps.

0.33x + 0.23y = 12.40

<em>(AKA - The cost of the stamps in total, should equal $12.40).</em>

So now, we have our two equations:

x + y =40\\0.33x+0.23y=12.40

If you have a TI-84 graphing calculator, you can go to apps -> polysmlt2 -> simultaneous eqn solver, and then input these equations into the menu. This will solve the problem for you.

If you need to do this manually, let's use substitution. Condense our first equation to make it more substitutable.

x+y=40\\x=40-y

Now, let's put this into our second equation.

0.33x+0.23y=12.40\\0.33(40-y)+0.23y=12.40

Distribute, and solve for y.

13.2-0.33y +0.23y =12.40\\13.2-0.1y=12.40\\-0.1y=-0.8\\y=8

Now, we plug this into one of our equations.

x+y=40\\x+8=40\\x=32

In the end, we have thirty-two 33-cent stamps, and eight 23-cent stamps.

3 0
1 year ago
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