All categories

2 years ago

How much red paint and blue paint do you use to make 20 cups of purple paint?

Mathematics

1 answer:

Iteru [2.4K]2 years ago

7 0

Answer:

To get 20 cups of purple paint, the table shows that we need 8 cups of blue paint and 12 cups of red paint. We can solve the problem using double (or triple) number lines.

You might be interested in

Y = -5x + 1 graph the equation by making a table of values. Use 3 values of x.

Naily [24]

Answer:

Table -

x=-1 y= 6

x=0 y= 1

x=1 y= -4

Step-by-step explanation:

Answers are found by plugging in any 3 values of x

3 0

3 years ago

E^2x -2e^x -8=0 <img src="https://tex.z-dn.net/?f=%20%7Be%7D%5E%7B2x%7D%20-%20%20%7B2e%7D%5E%7Bx%7D%20-%208%20%3D%200" id="Te

vovikov84 [41]

E^2x -2e^x -8=0 => e^(2x) -2e^x -8=0

Temporarily replace e^x with y.

Then (y)^2 - 2y - 8 = 0. Factors are (y-4) and (y+2).

Roots are y = 4 and y= -2.

Now remembering that we temporarily replaced e^x with y, we let
y=4 = e^x. We need to solve for x. Taking the natural log of both sides, we get:

ln 4 = x (answer)

We have to discard the other root (y= -2), because we cannot take the ln of a negative number.

8 0

3 years ago

At RSM summer camp 100 students had enough food for a 30-days stay. After 2 days 40 new students joined the camp. After that 2 w

omeli [17]

Answer:

"no additional days of food need to be ordered."

Step-by-step explanation:

Suppose initial quantity of food is x units

Assuming each student eats 1 unit of food per day,

x = 30 * 100 = 3000 units of food

In 2 days, food eaten:

100 * 1 * 2 = 200 units

So food left after 2 days is 3000 - 200 = 2800 units

Now, there are 140 students. They stay 2 weeks (14 days) - 2 = 12 more days

So food eaten in 12 days:

140 * 1 * 12 = 1680 units

THus, after total 14 days gone, the amount of food left is:

2800 - 1680 = 1120 units

Half students left, so there are 70 students left for the last 16 days. How much food would they need?

70 * 1 * 16 = 1120 units

And there are exactly 1120 units left. So, no additional days of food need to be ordered.

6 0

3 years ago

What is 12 percent of 120?

love history [14]

12% of 120 is 14.4

Change the percentage into a decimal by dividing over 100:

12 / 100 = 0.12

Multiply:

0.12 × 120 = 14.4

5 0

3 years ago

The avocado own a 1/4 acre orchard. Two fifths of the orchard is planted in orange trees. What fraction of an acre in planted i

Svetlanka [38]

$Two\ fifths\ of\ the\ orchard= \frac{2}{5} \cdot \frac{1}{4}\ acre= \frac{1}{10} \ acre\\\\Ans.\ 0.1\ acre\ in\ orange\ trees.$

5 0

2 years ago

Read 2 more answers