A recipe calls for a total of 3 cups flour and sugar. If the recipe calls for a cup of sugar, how much flour is needed?o 3 te cups
3 cups
4 cups
3 cups
5
12 cup
3
13 cups

Answers

Answer 1
Answer:

Answer:

3 cups

Step-by-step explanation:

The same amount of each is needed if I read that correctly.


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Please help I need these quickly. Please answer sensibly! I will give brainliest to the correct answer.

You select two cards from a standard deck of 52 cards, one after the other. What is the probability that you select and ace then a king? A. 1/13
B. 4/663
C 2/13
D 1/169

Answers

it would be 1/169 because it is not very likley
It would be 2/13 because imagine being given 4 decks of 13 cards and you have. Higher chance of having one to two of an ace or king in the deck compared to pulling none to all four. So 2/13 due to the ratio of 13

A psychologist designed a new aptitude exam to measure logical and analytical thinking abilities. The time allowed for the exam is 60 minutes, and the exam is made up of 35 multiple choice questions. The psychologist expects that an examinee will spend an average of 1.66 minutes answering each question, with a standard deviation of 0.73 minutes. What proportion of examinees will complete the exam on time? Carry your intermediate computations to at least four decimal places. Report your result to at least three decimal places

Answers

Answer:

52.79% of examinees will complete the exam on time.

Step-by-step explanation:

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = (X - \mu)/(\sigma)

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

There are 35 questions. The psychologist expects that an examinee will spend an average of 1.66 minutes answering each question, with a standard deviation of 0.73 minutes. This means that the mean and the standard deviation for the time to complete the test is \mu = 35*1.66 = 58.1, \sigma = 35*0.73 = 25.55.

What proportion of examinees will complete the exam on time?

The time allowed for the exam is 60 minutes. So this proportion is the pvalue of Z when X = 60. So:

Z = (X - \mu)/(\sigma)

Z = (60 - 58.1)/(25.55)

Z = 0.07

Z = 0.07 has a pvalue of 0.5279.

This means that 52.79% of examinees will complete the exam on time.

20-3+12/6x2=N
Helpppppp

Answers

Answer:

N=21

Step-by-step explanation:

20-3+12/6x2=N

20-3+2x2=N

20-3+4=N

21=N

N=21

20 - 3 + 12/6 x 2 = N
20 - 3 + 2 x 2 = N
20 - 3 + 4 = N
20 + 1 = N
21 = N

N = 21

What is 5 x 9 the answer

Answers

Answer:

5 x 9 is 45

Step-by-step explanation:

just is loll

1. Find the value of 3x -2x^2 ; when x = -3. ^ means "power of" *

Answers

Answer:

27

Step-by-step explanation:

3x - 2x²

3 × -3 = -9

2 × -3 = -6

-9 - (-6²)

-9 - (-36)

-9 + 36

36 - 9

36 - 9 = 27

Find the measure of angle 'y'. 49° A. 60 degrees B. 70 degrees C. 80 degrees D. 110 degrees​

Answers

Answer:

70°

Step-by-step explanation:

61° + 49° + y = 180° (sum of angles of a triangle is always 180°)

so,

y= 180° - 61° - 49° = 70°