All categories

2 years ago

3. Ivan has 15 yards of green felt and 12 yards of

Mathematics

2 answers:

lys-0071 [83]2 years ago

6 0

Answer: 5 yards of green felt and 4 yards of blue felt is used to make each quilt.

Step-by-step explanation:

As per given ,

Length of green felt used to make 3 quilts = 15 yards

Then , the length of green felt used to make 1 quilt = $\dfrac{15}{3}=5\text{ yards}$

Length of blue felt used to make 3 quilts = 12 yards

Then , the length of blue felt used to make 1 quilt = $\dfrac{12}{3}=4\text{ yards}$

Hence, 5 yards of green felt and 4 yards of blue felt is used to make each quilt.

dybincka [34]2 years ago

4 0

Answer:

three yards for blue felt and five yards for green

Step-by-step explanation:

divide each by three

You might be interested in

What is the surface area of the pyramid? 12ft 10ft 10ft

jonny [76]

Answer:

2h x (l+b)

2x10 X (12+10)

20 X 22

44 cm cube is your answer...

3 0

2 years ago

Read 2 more answers

Marleny is creating a game of chance for her family. She has 5 different colored marbles in a bag: blue, red, yellow, white, and

posledela

The answer is four because if you lose two from the four you had you will still have a least 2 hope This helped

5 0

2 years ago

Read 2 more answers

At the end of the business day, Sam attempts to balance the register. According to Sam's count, the register has $1,453.27. Howe

Alex787 [66]

All u need to do is subtract the bigger number from the smaller one

3 0

2 years ago

Read 2 more answers

Two major automobile manufacturers have produced compact cars with engines of the same size. We are interested in determining wh

snow_tiger [21]

Answer:

Step-by-step explanation:

Corresponding fuel efficiencies of manufacturer A's car and manufacturer B's car form matched pairs.

The data for the test are the differences between the efficiencies of manufacturer A's car and manufacturer B's car

μd = fuel efficiency of manufacturer A's car minus the fuel efficiency of manufacturer B's car.

A B diff

32 28 4

27 22 5

26 27 - 1

26 24 2

25 24 1

29 25 4

31 28 3

25 27 - 2

Sample mean, xd

= (4 + 5 - 1 + 2 + 1 + 4 + 3 - 2)/8 = 2

xd = 2

Standard deviation = √(summation(x - mean)²/n

n = 8

Summation(x - mean)² = (4 - 2)^2 + (5 - 2)^2 + (- 1 - 2)^2 + (2 - 2)^2 + (1 - 2)^2 + (4 - 2)^2 + (3 - 2)^2 + (- 2 - 2)^2 = 44

Standard deviation = √(44/8

sd = 2.35

For the null hypothesis

H0: μd = 0

For the alternative hypothesis

H1: μd ≠ 0

This is a two tailed test and the distribution is a students t. Therefore, degree of freedom, df = n - 1 = 8 - 1 = 7

2) The formula for determining the test statistic is

t = (xd - μd)/(sd/√n)

t = (2 - 0)/(2.35/√8)

t = 2.41

We would determine the probability value by using the t test calculator.

p = 0.047

Since alpha, 0.1 > the p value 0.047, then we would reject the null hypothesis. Therefore, at 1% significance level, we can conclude that there is a significant difference in the mean MPG (miles per gallon) when testing for the fuel efficiency of these two brands of automobiles.

6 0

2 years ago

Marissa has twice as much money as Frank. Christina has $20 more than Marissa. If Christina has $100, how much money does Frank

qwelly [4]

Answer:

a. Take a grid that shows represents the amount of money Frank has,

Say F,

( shown below ),

b. Since, Marissa has twice as much money as Frank,

So, the amount Marissa has = 2F

If M represents the amount Marissa has,

M = 2F

c. Now, Christina has $20 more than Marissa,

Add 20 to the grid M

d. The below diagram provides enough information to determine the value of the variable m

e. The amount Christina has = M + 20 = 2F + 20

According to the question,

2F + 20 = 100

2F = 80

F = 40

Hence, the amount frank has = $ 40,

Amount Marissa has = 2(40) = $ 80,

3 0

2 years ago