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DanielleElmas [232]
2 years ago
6

The fabric is $3 times the number of yards of fabric n. Which equation gives the total cost c of n yards of fabric

Mathematics
1 answer:
zvonat [6]2 years ago
8 0

Answer:

C = 3n

Step-by-step explanation:

Given that,

The fabric is $3 times the number of yards of fabric n.

We need to find an equation that gives the total cost c of n yards of fabric.

It means, the total cost of n yards of fabric is given by :

C = 3n

Where

n is yards of fabric.

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Find the solution(s) to the system of equations represented in the graph.
jolli1 [7]

Answer:

(-3,0) and (0,3)

Step-by-step explanation:

The solution to the system of equation is where the two graphs intersect

The intersect at two points

(-3,0) and (0,3)

3 0
3 years ago
Math scores on the SAT exam are normally distributed with a mean of 514 and a standard deviation of 118. If a recent test-taker
LuckyWell [14K]

Answer:

Probability that the student scored between 455 and 573 on the exam is 0.38292.

Step-by-step explanation:

We are given that Math scores on the SAT exam are normally distributed with a mean of 514 and a standard deviation of 118.

<u><em>Let X = Math scores on the SAT exam</em></u>

So, X ~ Normal(\mu=514,\sigma^{2} =118^{2})

The z score probability distribution for normal distribution is given by;

                              Z  =  \frac{X-\mu}{\sigma} ~  N(0,1)

where, \mu = population mean score = 514

           \sigma = standard deviation = 118

Now, the probability that the student scored between 455 and 573 on the exam is given by = P(455 < X < 573)

       P(455 < X < 573) = P(X < 573) - P(X \leq 455)

       P(X < 573) = P( \frac{X-\mu}{\sigma} < \frac{573-514}{118} ) = P(Z < 0.50) = 0.69146

       P(X \leq 2.9) = P( \frac{X-\mu}{\sigma} \leq \frac{455-514}{118} ) = P(Z \leq -0.50) = 1 - P(Z < 0.50)

                                                         = 1 - 0.69146 = 0.30854

<em>The above probability is calculated by looking at the value of x = 0.50 in the z table which has an area of 0.69146.</em>

Therefore, P(455 < X < 573) = 0.69146 - 0.30854 = <u>0.38292</u>

Hence, probability that the student scored between 455 and 573 on the exam is 0.38292.

7 0
3 years ago
Solve 3(-1)(10-5-2(3))
AleksAgata [21]

The answer should be 3 :)

8 0
3 years ago
Read 2 more answers
Someone please help I’m begging!! I will mark brainlest!
lara31 [8.8K]

Answer:

.

Step-by-step explanation:

2(3x^2+23x+14)

2(3x^2+21x+2x+14)

2(3x(x+7)+2(x+7)

2(x+7)(3x+2)

7 0
2 years ago
I need help I’m so stuck on this
frutty [35]

Answer:

x = 40

Step-by-step explanation:

x/4 = 10

x/4 x 4 = 10 x 4

x = 40

8 0
2 years ago
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