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Nookie1986 [14]
3 years ago
11

You need 1 1/4 cups of sugar to make 20 cookies. To make 12 cookies you will need ____ cups of sugar?

Mathematics
1 answer:
iris [78.8K]3 years ago
4 0

Answer:

0.75 or 3/4 cups

Step-by-step explanation:

Make a proportion

We need 1 1/4, or 1.25 cups of sugar for 20 cookies, and we need x cups of sugar for 12 cookies

1.25/20=x/12

To solve, we need to get the variable,x, by itself. It is being divided by 12. To reverse this, multiply both sides by 12.

12(1.25/20)=(x/12)12

The 12s on the right will cancel, and we are left with

0.75=x

0.75 is equivalent to 3/4

So, 0.75 or 3/4 cups of sugar is needed to make 12 cookies

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Factor the polynomial by finding the greatest common factor.<br> -15y^7z^6 – 3y^3z^8
S_A_V [24]
Answer: -3y^3z^6(5y^4+z^2)

Explanation: The first number in the parenthesis has to be positive, so the GCF in this problem will be negative. The GCF between the coefficients is 3. The GCF between the y variable is y^3. The GCF between the z variable is z^6. We combine all of the GCFs to get an overall GCF: -3y^3z^6. Then we will factor it out of the two terms, giving us: -3y^3z^6(5y^4+z^2). You can check the answer by multiplying them to see if you get the original expression.
4 0
3 years ago
Graph the circle (x+6)^2 + (y+5)^2 =9
Andrei [34K]

Answer:

This a circle centered at the point (-6,-5), and of radius "3" as it is shown in the attached image.

Step-by-step explanation:

Recall that the standard formula for a circle of radius "R", and centered at the point (x_0,y_0) is given by:

(x-x_0)^2+(y-y_0)^2=R^2

Therefore, in our case, by looking at the standard equation they give us, we extract the following info:

1)  R^2 = 9\,\,\,then\,\,\,R=3  since the radius must be a positive number and (R=-3) is not a viable answer.

2) x_0=-6    for ( x-x_0) to equal   (x+6)

3) y_0=-5    for ( y-y_0) to equal   (y+5)

Therefore, we are in the presence of a circle centered at the point (-6,-5), and of radius "3". That is what we draw as seen in the attached image.

5 0
3 years ago
Suppose 1% of cotton fabric rolls and 4% of nylon fabric rolls contain flaws. Of the rolls used by a manufacturer, 70% are cotto
Amanda [17]

Answer:

0.019 or 1.9%

Step-by-step explanation:

The probability that a randomly selected roll used by the manufacturer contains flaws is determined by the probability of a flawed cotton roll occurring (1% x 70%) added to the probability of a flawed nylon roll occurring  (4% x 30%) .

P(F) = P(C)*P(F_C)+P(N)*P(F_N)\\P(F) = 0.7*0.01+0.3*0.04\\P(F) = 0.019 = 1.9\%

The probability that a randomly selected roll contains flaws is 0.019 or 1.9%

4 0
4 years ago
Solve the equation. Show the process, not just an answer. 6.EE.7
Natalka [10]

Isolate the variable, note the equal sign, what you do to one side, you do to the other.

1) 4k = 24

Isolate the variable, k. Divide 4 from both sides of the equation:

(4k)/4 = (24)/4

k = 24/4

k = 6

2) 34 + h = 60

Isolate the variable, h. Subtract 34 from both sides of the equation:

34 (-34) + h = 60 (-34)

h = 60 - 34

h = 26

3) 1/5x = 30

Isolate the variable, x. Multiply 5 to both sides of the equation:

(5) * (1/5)x = (30) * (5)

x = 30 * 5

x = 150

4) m - 42 = 85

Isolate the variable, m. Add 42 to both sides of the equation:

m- 42 (+42) = 85 (+42)

m = 85 + 42

m = 127

~

6 0
3 years ago
8 • (x • 4) <br> simplify each expression
muminat

Answer:

The answer would be: 8(4x)= 32x

5 0
3 years ago
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