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3 years ago

6

KARLA has spent $33 on food. She bought milk, cheese, and meat. The milk cost half as much as the cheese and the meat cost four

times as much as the cheese. Which equation will help you find the cost of the cheese?

1 answer:

djverab [1.8K]3 years ago

8 0

C+.5c+4c=$33 is the correct equation

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3 years ago

Angle 1 and angle 2 are supplementary if m angle 1 is two times m angle 2 what are the measures of both angles

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3 years ago

What is the value of x in the equation 3x − 2 = x + 8?

N76 [4]

Answer:

x=5

Step-by-step explanation:

We need to find the value of x the given equation: 3x-2=x+8

the goal when solving for equations is to isolate the variable onto one side, and have the number (value of what x is) on the other side

here's the equation:

3x-2=x+8

first, add 2 to both sides

3x-2=x+8

+2 +2

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3x=x+10 (2 goes away on the left side, as -2+2=0)

now, subtract x from both sides

3x=x+10

-x -x

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2x=10 (x goes away on the right side, as x-x=0)

we have the variable isolated on one side, with the number on the other, but we need the value of x by itself (1x)

divide both sides by 2

x=5 (because 2x/2=1x, or x. 10/2=5).

therefore, the value of x is 5

Hope this helps!

4 0

3 years ago

Choose the ratio below that is equivalent to 3:5<br>A. 5:3<br>B. 9:15<br>C. 9:5<br>D. 8:4

n200080 [17]

Hi there! Just by looking at the choices, we can eliminate C and D, because those answers don’t make sense and they don’t flow together. 3:5 is equivalent to those like 6:10, 9:15, 12:20, and so on. You can basically add 3 and 5 in order to get the next ratios. The only ratio that works in this problem is B. The answer is B: 9:15.

4 0

4 years ago

Given any undergraduate student, there is 10% chance that they will join the graduate program. In an undergraduate class of 400

nydimaria [60]

Answer: A. 5%

Step-by-step explanation:

Given : The chance that they will join the graduate program : p=0.10

The total number of students in the class: n = 400

For this binomial situation :

$\mu=np=400\times0.10=40\\\\\sigma=\sqrt{np(1-p)}=\sqrt{400\times0.10(0.90)}=6$

We assume that this is normal distribution.

Let X be the random variable that represents the students will be joining a graduate program.

Z-score : $z=\dfrac{x-\mu}{\sigma}$

For x= 50 , we have

$z=\dfrac{50-40}{6}=1.67$

Using the standard normal distribution table , we have

$P(x\geq50)=P(z\geq1.67)=1-P(z$

Hence, the value i.e.closest to the probability that at least 50 students will be joining a graduate program = 5%

5 0

4 years ago