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2 years ago

7

Grace is painting her room. She created a mixture with 2 cups of blue paint for every 3 cups of white. If she decides to make a

larger mixture and uses 4.5 cups of white paint, how much blue paint will she use?

1 answer:

Bas_tet [7]2 years ago

5 0

The answer is 3. If you find the unit rate of white to blue paint and multiply it by 4.5 it would come out to 3.000007 or something minute like that.

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Which equation represents a function?

Maurinko [17]

All the answers except C has a Vertical Line when graphed. It must pass the Vertical line test in order to be a function.

Vertical Line Test: If you can draw a vertical line anywhere on a graph so that it hits the graph in more than one spot, then the graph is NOT a function.

C.) can pass the test since it's a horizontal line.

Hope this helps!

6 0

2 years ago

Maria and Katy each have a piece of string. When they put the two pieces of string together end to end, the total length is 84in

kramer

Maria's piece is 45 inches long

Katy's piece is 39 inches long

Step-by-step explanation:

Maria and Katy each have a piece of string

When they put the two pieces of string together end to end, the total length is 84 inches
Maria’s string is 6 inches longer than Katy’s

We need to find how long is Maria’s piece of string and how long is Katy’s piece of string

Assume that the length of Maria's piece is x inches and the length of Katy's piece is y inches

∵ Maria's piece is x inches

∵ Katy's piece is y inches

∵ The total length of the two pieces is 84 inches

- Add x and y, then equate the sum by 84

∴ x + y = 84 ⇒ (1)

∵ Maria’s string is 6 inches longer than Katy’s

- That means equate x by the sum of y and 6

∴ x = y + 6 ⇒ (2)

Now we have a system of equations to solve it

Substitute x in equation (1) by equation (2)

∴ (y + 6) + y = 84

- Add the like terms in the left hand side

∴ 2y + 6 = 84

- Subtract 6 from both sides

∴ 2y = 78

- Divide both sides by 2

∴ y = 39

- Substitute the value of y in equation (2) to find x

∵ x = 39 + 6

∴ x = 45

Maria's piece is 45 inches long

Katy's piece is 39 inches long

Learn more:

You can learn more about the system of equations in brainly.com/question/2115716

#LearnwithBrainly

3 0

2 years ago

Solve this system of equations using the elimination method.

Ray Of Light [21]

Answer:

(6, -9)

Step-by-step explanation:

Our system of linear equations is:

6x + 2y = 18

-4x - 2y = -6

When we solve by elimination, we're essentially "eliminating" a variable so that we can solve for other more easily. Here, let's eliminate the y variable by adding the two equations together:

6x + 2y = 18

+ -4x - 2y = -6

____________

2x + 0y = 12

x = 12/2 = 6

Plug this back into one of the original equations to find y:

-4x - 2y = -6

-4 * 6 - 2y = -6

-24 - 2y = -6

-2y = 18

y = -9

The solution is (6, -9).

7 0

2 years ago

Read 2 more answers

Which is a reasonable estimate of the constant of variation

SCORPION-xisa [38]

Answer:

Direct Variation. Since k is constant we can find k when given any point by dividing the y-coordinate by the x-coordinate.

4 0

2 years ago

Joe runs 9.25 times around a track in 1, 125.803 seconds. If one lap around the track is 502.3 meters,

musickatia [10]

Step-by-step explanation:

Speed = Distance÷Time

so

502.3÷125.803= 3.99275057

6 0

2 years ago