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2 years ago

How to find where the equations meet.

Mathematics

1 answer:

zzz [600]2 years ago

3 0

The first sentence → x - 2y = -1
the second one → 3x - 2y = -3

multiply the first one by -1
you can get → -x + 2y = 1

plus two sentences together
you can get → 2x = -2

so you are able to know that x = -1
and y = 0

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Sedbober [7]

Answer:

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Step-by-step explanation:

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2 years ago

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A 9-yard roll of string costs $3.42. What is the unit price?

Karolina [17]

Answer:

$0.38 per yard

Step-by-step explanation:

Step 1:

Given; A 9-yard roll of string that costs $3.42.

Required; To find the unit price

Step 2:

Convert $3.42 to cents

$1 ~dollar=100~cents ~\\therefore,\\$3.42=3.42~x~100=342~cents~$

Step 3:

Find the unit price

$\frac{9 yard}{1 yard} =\frac{342 ~cents}{x~cents}$

$9x=342$

$\frac{9x}{9} =\frac{342}{9}$

$x=38~cents$

Convert to dollars

$x=\frac{38}{100}$

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Hence the unit price is $0.38 per yard.

5 0

2 years ago

R+2r=105 what is answer

Alik [6]

Answer:

If you're trying to solve for r. r=35

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

r+2r=105

(r+2r)=105(Combine Like Terms)

3r=105

Step 2: Divide both sides by 3.

3r/3 = 105/3

r=35

8 0

2 years ago

HELPP PLEASE ASAP Use the Pythagorean theorem to find the missing length in the right triangle

qwelly [4]

Answer:

c = 10

Step-by-step explanation:

The pythagoras theorem :

a² + b² = c²

a = 6 and b = 8

6² + 8² = c²

36+64 = c²

100 = c²

c = √100

c= 10

Hope this helped and brainliest please

3 0

1 year ago

A volume of a sphere is 407.51 in^3.To the nearest tenth,what is the radius of the sphere?Use 3.14 for Pi. round to the nearest

noname [10]

Volume of a sphere
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3 0

3 years ago