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3 years ago

Which of the following graphs represents the relationship in the diagram?

Mathematics

1 answer:

ira [324]3 years ago

7 0

Answer:

hmmm wait if you search it there should be this link that says the answer trust me

Step-by-step explanation:

try it

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Lori is picking up lunch for herself and her coworkers. Some of her coworkers ordered the salad which costs $7.50, and some of h

Step2247 [10]

Answer: 3 people ordered soup.

Step-by-step explanation:

Let x be the number of people ordered salad and y be the number of people ordered soup.

As per given,

x=2y (i)

7.50x+6.25y= 63.75 (ii)

Substitute value of c =2y in (ii) , we get

7.50(2y)+6.25y= 63.75

⇒ 15y+6.25y = 63.75

⇒21.25y = 63.75

⇒ y= 3 [divide both sides by 21.25]

Then, x= 2(3) =6

So 6 people ordered salad and 3 people ordered soup.

4 0

4 years ago

You deposit $4000 in an account earning 6% interest compounded continuously. How much money will you have in the account in 15 y

boyakko [2]

Answer:

9586.232772

$4000×1.06( to the power of 15)=9586.232772

4 0

3 years ago

Student Council sells bottled water at the cheerleading competition as shown in the table. Determine if each statement is true o

mel-nik [20]

Answer:

1. False

2. True

3. True

4. True

5. False

Step-by-step explanation:

1. False - they sell 3 cases in 20 min as shown in the table

2. True - If they sold 3 cases in 20 min and 6 cases in 40 min, then they would sell 9 cases in an hour, and 12 cases in 1 hour and 20 min

3. True - Building off of our answer in 2, student council would have sold 15 cases in 1 hour and 40 min, and 18 in 2 hours

4. True - In 40 min, student council sold 6 cases, and in 2 hours, 18 cases, so in 2 hours and 40 min, they would have sold 24 cases

5. False - In one hour - 9 cases. In 2 hours - 18 cases. In 3 hours - 27. And in 20 min - 3 cases, so they would sell 30 cases in 3 hours and 20 min.

4 0

3 years ago

Read 2 more answers

A recent national survey found that high school students watched an average (mean) of 7.2 movies per month with a population sta

VladimirAG [237]

Answer:

1. Option A

2. Option D) Reject null hypothesis if z < –1.645

3. z = -4.90

4. P-value = 0.00001

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 7.2

Sample mean, $\bar{x}$ = 6.5

Sample size, n = 49

Alpha, α = 0.05

Population standard deviation, σ = 1.0

a) First, we design the null and the alternate hypothesis

$H_{0}: \mu \geq 7.2\text{ movies per month}\\H_A: \mu < 7.2\text{ movies per month}$

Option A) is the correct answer

We use one-tailed(left) z test to perform this hypothesis.

c) Formula:

$z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }$

Putting all the values, we have

$z_{stat} = \displaystyle\frac{6.5 - 7.2}{\frac{1}{\sqrt{49}} } = -4.90$

b) Now, $z_{critical} \text{ at 0.05 level of significance } = -1.645$

Rejection rule:

If calculated z-statistic is less than the critical z-value, we reject the null hypothesis.

Option D) Reject null hypothesis if z < –1.645

d) Now, we calculate the p-value with the help of standard normal table.

P-value = 0.00001

Since the p-value is lower than the significance level, we fail to accept the null hypothesis and reject it.We accept the alternate hypothesis.

We conclude that the college students watch fewer movies a month than high school students.

6 0

3 years ago

- Vēs<br> What type of number is 3 and 5 over 7

AysviL [449]

It is rational and real. It is also called a mixed number.

4 0

4 years ago