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2 years ago

Consider the following pair of equations:

1 answer:

3 0

X+4=y=-2x-2
x+4=-2x-2
add 2x to both side
3x+4=-2
minus 4 both sides
3x=-6
divide 3
x=-2

sub back
y=x+4
y=-2+4
y=2

(x,y)
(-2,2)

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What does 2^10/4^42 equal

alukav5142 [94]

If you calculate 20^10/4^42 then you will find out it equals25

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2 years ago

Chocolate chunk cookies are 59 cents each or $6.00 a dozen. How much are do you save by buying the cookies by the dozen?

kifflom [539]

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Step-by-step explanation:

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2 years ago

Read 2 more answers

Mrs. Davis bought 6 pounds of grades for $18. At this rate, how much would 72 ounces of grapes have cost?

saveliy_v [14]

This the problem we are looking at: 6 pounds/18 = 72 ounces /?
To solve this, we have to make the unit of measurement the same. There are 16 ounces in 1 pound. So, there are 72 ounces in 4.5. To find that you just do 72 divided by 16. This is the new problem we are looking at: 6 pounds/18 = 4.5 pounds/?
To find ?, you must divided 6 divided by 4.5 to find the difference between the two to keep the same rate. That equals 1.33333333.
What is done to the numerator, you must do to the denominator to keep the same rate so now you divide 18 divided by 1.33333333 which equals 13.5

So for 72 ounces (4.5 pounds) it will cost $13.50

I hope this helps:)

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2 years ago

sports warehouse had a sale on two models of baseball gloves. Model A sold for $30.00, and model B sold for $45.25. A total of 5

alexandr402 [8]

Answer:

18 model A gloves and 34 model B gloves

Step-by-step explanation:

Set up 2 equations based on the given information

Let 'x' represent the number of Model A gloves sold

Let 'y' represent the number of Model B gloves sold

Then..

$30x + $45.25y = $2,078.50 represents the total sold in dollars

x + y = 52 represents the total number of gloves sold

Solve the second equation for either variable...

x = 52 - y

Now plug this into the first equation...

$30(52 - y) + $45.25y = $2,078.50 {x became 52 - y}

Now solve for y...

$1,560 - $30y + $45.25y = $2,078.50

$15.25y = $518.50 (combine y terms, subtract $1,560 from both sides)

y = 34 (divide both sided by $15.25, dollar signs cancel out)

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2 years ago

In a right triangle has one leg that measures 11 in and the hypotenuse measures 47 in, what is the length of the other leg?

Wewaii [24]

Using the Pythagorean theorem:

47 ^2 = 11^2 + x^2

2209 = 121 + x^2

Subtract 131 from both sides

2088 = x^2

Take the square root of both sides

X = sqrt(2088)

Simplify

X = 6sqrt(58)

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1 year ago