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3 years ago

5

If Sara bought 12 feet of fabric and she is going to make curtains and she has to cut 1/4 sections. How many sections of fabric

will she have

2 answers:

Strike441 [17]3 years ago

6 0

Answer:

48

Step-by-step explanation:

You just have to divide the length of the fabric by the length of the sections

vivado [14]3 years ago

3 0

3 sections because she needs to divide

12•(1/4)

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Mike makes seven dollars an hour working at the grocery store and $10 an hour delivering newspapers. He cannot work more than 20

Kipish [7]

Answer:

Step-by-step explanation:

I think the below is your full question:

<em>Mike makes seven dollars an hour working at the grocery store and $10 an hour delivering newspapers. He cannot work more than 20 hours per week. Graph two inequalities that Kishi can use to determine how many hours he needs to work at each job if she wants to earn at least $90 per week.</em>

Here is my answer:

Let x is the number of hours he works at the grocery store

Let y is the number of hours he works at the newspapers

We have two inequalities:

1/ x + y $\leq 20$ <=> y $\leq$ 20 - x

2/ 7x + 10y $\leq 90$ <=> y $\geq$ 3/4x + 12.5

Please look at the attached photo

The red line is y $\leq$ 20 - x

The blue line is: y $\geq$ 3/4x + 12.5

<em />

7 0

4 years ago

A soldier started patrolling around his camp at 22 30 . His patrol lasted 3 hours and 20 minutes .What time did his patrol end

baherus [9]

Answer:01 50 Hrs

Step-by-step explanation:

If the soldier started patrol at 2230 hrs and his petrol lasted for 3 hours and 20 minutes, that means he was on patrol for that time.

The time he finished was therefore:

= 2230 + 320

= 2550

At 24 you begin at 0:00am so:

= 2550 - 2400

= 150

Patrol ended at 0150 hrs

4 0

3 years ago

A triangular pyramid has an isosceles triangular base. The base edge of the triangular base is 10

tester [92]

Answer:

h=94.87

Step-by-step explanation:

1. Volume of pyramid formula:

$v=\frac{1}{3}*a^{2}*h$

$a=b*h$ Base Edge * Height of Pyramid

2. We have variables:

V = 480, Base Edge = 10, Height of Base = 16 (Inch)

3. Plug into formula + Rearrange:

$\frac{3V}{h} =(b*h)^{2} [b^{2} *h^{2} ]$

$\frac{3V*b^{2} }{h} =h^{2}$

$h^{2}=\frac{3*480*10^{2} }{16}$

$h=\sqrt{9000}$

h≅94.868

7 0

3 years ago

Students at Praline High are allowed to sign up for one English class each year. The numbers of students signing up for various

vladimir1956 [14]

Answer:

part A 17/23

part B 31/40

part C 23/40

part D Yes, sorry you gotta figure that out. Im to lazy to write a sentence

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

According to a survey, about 19% of all Americans are without health insurance. Assume that this estimate is reasonably accurate

uranmaximum [27]

Answer:

a) 8.74

b) 2.6607

Step-by-step explanation:

For each American, there are only two possible outcomes. Either they are without health insurance, or they are not. In the sample, each person is independent of any other person, which means that we use the binomial probability distribution to solve this question.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

Can be approximated to a normal distribution, using the expected value and the standard deviation.

The expected value of the binomial distribution is:

$E(X) = np$

The standard deviation of the binomial distribution is:

$\sqrt{V(X)} = \sqrt{np(1-p)}$

According to a survey, about 19% of all Americans are without health insurance.

This means that $p = 0.19$

Suppose that you select a random sample of 46 Americans.

This means that $n = 46$

(a) Calculate the expected number of Americans without health insurance in the sample.

$E(X) = np = 46*0.19 = 8.74$

(b) Calculate the standard deviation of the number of Americans without health insurance in the sample.

$\sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{46*0.19*0.81} = 2.6607$

5 0

3 years ago