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Bess [88]
3 years ago
13

Solve this system of equations:

Mathematics
1 answer:
SpyIntel [72]3 years ago
7 0

y=2x so replacr the -y with -2x so 2x+6 is 8x. :)

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If 2= (1+ r)^7 solve the equation for r?​
solong [7]

7 = r^1/2 is the same as saying 7 = square root of r. So, to get rid of the square root sign on the r, you need to square it, and when you do something to one side of the equation, you have to do the same to the other side. So after squaring both sides, you get 49 = r.

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3 years ago
A box of cereal states that there are 75 calories in a 34-cup serving. What is the unit rate for calories per cup? How many calo
xeze [42]
The unit rate is how many calories are in 1 cup of cereal.
Set up a proportion:
\frac{75 cal}{3/4 cup} = \frac{X cal}{1 cup}
Cross multiply and solve:
\frac{3}{4} X = 75\\ 3X=300\\X=100
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To get the calories in 4 cups of cereal, simply multiply the unit rate of 100cals/cup by 4.
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8 0
3 years ago
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kirill115 [55]

Answer:

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Step-by-step explanation:

3 0
3 years ago
Tom's's garden has 9 tomato plants, 5 pepper plants, 3 squash plants, and 6 pumpkin plants.
Marianna [84]

Answer:

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Step-by-step explanation:

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9:3

3:1

I'm not exactly sure how to explain the ratio part either, but I hope it helped at least a little bit...have an amazing day :3

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