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marishachu [46]
3 years ago
12

Petra was given 12 yards of fabric to make costumes for the school play if each costume requires 1 1/2 yards how many costumes c

an she make
Mathematics
1 answer:
solmaris [256]3 years ago
7 0

Petra can make 8 costumes with 12 yards of fabric

<h3><u>Solution:</u></h3>

Given that Petra was given 12 yards of fabric to make costumes for the school play

Each costume requires 1\frac{1}{2} yards

<em><u>To find: number of costume Petra can make</u></em>

The number of costume Petra can make is calculated by dividing the total fabric she has by fabric needed for one costume

\text {number of costume Petra can make }=\frac{\text {total fabric she has }}{\text {fabric needed for one costume }}

Total fabric she has = 12 yards

Fabric needed for 1 costume = 1\frac{1}{2} = \frac{2 \times 1 + 1}{2} = \frac{3}{2} yards

Therefore,

\text {number of costume Petra can make }=\frac{12}{3 / 2}=\frac{12}{3} \times 2=8

Thus petra can make 8 costumes with 12 yards of fabric

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The ages of Jamal, Wesley, an John are consecutive integers.the sum of thier ages is 108.what are thier ages .
hodyreva [135]

Answer:

Step-by-step explanation:

We have three people

jamal = x (since im guessing hes the youngest)

wesley= x+1

John= x+2

the formula you would use is x+x+1+x+2=108

when you simplify that you get 3X+3=108

you subtract the 3 from 108 which leaves you with 3X=105

divide that by 3 which makes x=35

so

jamal is 35

wesley is 36

john is 37

3 0
2 years ago
A school will offer pizza on Friday's if at least 30% of the students will buy it. A sample of 50 students asked if they would b
Whitepunk [10]

Answer:

0.0614

Step-by-step explanation:

Solution:-

- The school offers pizza on friday when at-least 30% students are willing to buy.

- The minimum required proportion of students, p = 30%

- A sample of n = 50 students were taken and out of the sample x = 10 people responded willing to buy pizza.

- We will denote a random variable X: the number of students willing to buy Pizza on fridays.

- For the sample of n = 50, for Pizza to be offered on friday the expected number of student who should opt for buying must be at-least:

           Expected ( Mean - u ) = n*p = 50*0.3 = 15 people.

- The standard deviation for the normal distribution can be determined as follows:

          standard deviation ( s ) = √n*p*(1-p)

                                                 = √50*0.3*(0.7)

                                                 = √10.5 = 3.2404

- We will assume that the random variable X follows normal distribution:

                       X ~ Norm ( 15 , 3.2404^2 )

- To determine the probability of sample of size n = 50 with proportion or lower. The number of people willing to buy pizza on friday as per survey are x = 10.

- Evaluate the standard normal ( Z-score ):

                      P ( X < x ) = P ( Z < ( x - u ) / s )

                      P ( X < 10 ) = P ( Z < ( 10 - 15 ) / 3.2404 )

                      P ( X < 10 ) = P ( Z < -1.54301 )

- Use the standard normal tables to determine the value of P ( Z < -1.54301 ):

                     P ( X < 10 ) = P ( Z < -1.54301 ) = 0.0614

Answer: The probability of getting a sample with the proportion or lower given a population with a proportion of .30 is 0.0614.

5 0
3 years ago
Original price $45.00; markdown 22%
Setler79 [48]

First convert 22 to decimal form. You do this by dividing the percent by 100.
22 / 100 = .22

Then multiply the dollar amount by the percentage in decimal form.

$45 * .22 = $9.9

So 22% of $45 is $9.9.

Then you subtract $9.9 from $45.

$45 - $9.9 = $35.1




4 0
3 years ago
Can I PLEASE get some help?
Leviafan [203]
Well 1/40 is 0.025 so that should be the write fraction to use
4 0
3 years ago
Read 2 more answers
—5 + 3x + 2 = 12<br> Solve for x
klio [65]

Answer:

x=5

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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