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IrinaK [193]
3 years ago
8

Find -3/7 divided by -15/1

Mathematics
1 answer:
posledela3 years ago
6 0

Answer:

1/35

Step-by-step explanation:

-3/7 / -15/1 =

3/7 * 1/15 =

3 / 105 =

1/35

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PLEASE HELP!!! 20 POINTS!!!!
stealth61 [152]
To evaluate the expression all you have to do is substitute the value for the variable.

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8 + 6
14.

The solution is 14.
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3 years ago
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Please help! I'll give brainliest to whom is correct!
olga2289 [7]

Answer:

I THINK IT IS THE LAST ONE

Step-by-step explanation:

8 0
3 years ago
Solve by substitution 3x+y=3 and 7x+2y=1
balu736 [363]

3x + y = 3

7x + 2y = 1

First isolate one of the variables (x or y) in one of the equations.

Isolate "y" in the first equation(because it is the easiest to isolate) and substitute it into the second equation.

3x + y = 3      Subtract 3x on both sides

3x - 3x + y = 3 - 3x

y = 3 - 3x


7x + 2y = 1

7x + 2(3 - 3x) = 1     [since y = 3 - 3x, you can substitute (3-3x) for "y"]

Multiply/distribute 2 into (3 - 3x)

7x + (3(2) - 3x(2)) = 1

7x + 6 - 6x = 1

x + 6 = 1     Subtract 6 on both sides

x = -5


Now that you know "x", substitute it into one of the equations (I will do both)

3x + y = 3

3(-5) + y = 3       [since x = -5, you can plug in -5 for "x"]

-15 + y = 3    Add 15 on both sides

y = 18


7x + 2y = 1

7(-5) + 2y = 1

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y = 18


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5 0
3 years ago
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Answer:

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Step-by-step explanation:

The ratio of marked fish to caught fish is 4:10, we need to solve for x in 20:x, since 4 * 5 = 20, 10 * 5 = x so x = 50 fish.

8 0
3 years ago
When Ria Goes to School the temperature is -5° during the school day the temperature rises 15° what is the temperature when ria
goblinko [34]

Answer:

easy 10

Step-by-step explanation:

i put it in a vid because i don't know how else to explain

but i can't upload

4 0
3 years ago
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