Ask question

Ask question

All categories

3 years ago

12

A recipe that makes 20 cookies calls for 2 cups of chocolate chips and 1 cup of chopped nuts. How many cups of chocolate chips a

nd chopped nuts are needed for 80 cookies?

2 answers:

nikitadnepr [17]3 years ago

6 0

Answer:

8 of chocolate chips and 4 of chopped nuts

Step-by-step explanation:

dangina [55]3 years ago

3 0

Answer:

8 cups of chocolate chips and 4 cups of chopped nuts

Step-by-step explanation:

You might be interested in

Write an equation of the line that passes through (1, 2) and is perpendicular to the line y=13x+4.

Serhud [2]

Answer:

Step-by-step explanation:

y=-1/13x since it is perpendicular flip it and make it negative

6 0

3 years ago

Read 2 more answers

Twice the sum of two numbers is 36 If one of the numbers is 10 find the other number

Dahasolnce [82]

Answer:

8

Step-by-step explanation:

10 + 8 = 18

18 x 2 = 36

3 0

3 years ago

Read 2 more answers

Lily uses a calculator to figure the total of a $46 lamp. Including sales tax the total is $47.61 what is the sales tax percenta

nataly862011 [7]

Before Tax Price: $46.00
Sale Tax: 3.50% or $1.61
After Tax Price: $47.61

7 0

3 years ago

Read 2 more answers

A researcher wants to estimate the percentage of all adults that have used the Internet to seek pre-purchase information in the

lara31 [8.8K]

Answer:

The sample size is 1875.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

The margin of error is:

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

Sampling error of 0.03.

This means that $M = 0.03$

99.74% confidence level

So $\alpha = 0.0026$ , z is the value of Z that has a pvalue of $1 - \frac{0.0026}{2} = 0.9987$ , so $Z = 3$ .

25% of all adults had used the Internet for such a purpose

This means that $\pi = 0.25$

What is the sample size

The sample size is n. So

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

$0.03 = 3\sqrt{\frac{0.25*0.75}{n}}$

$0.03\sqrt{n} = 3\sqrt{0.25*0.75}$

Simplifying by 0.03 both sides

$\sqrt{n} = 100\sqrt{0.25*0.75}$

$(\sqrt{n})^2 = (100\sqrt{0.25*0.75})^2$

$n = 1875$

The sample size is 1875.

7 0

3 years ago

Ruby and her children went into a bakery and she bought $18 worth of donuts and cookies. Each donut costs $1 and each cookie cos

Serjik [45]

IDK IDK IDK IDK IDK IDK IDK IDK IDK IDK

5 0

3 years ago