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asambeis [7]
3 years ago
11

Sue baked cookies for a school fundraiser. She sold three-fourths of the cookies during the first two hours of the fundraiser. S

he sold one-third of the remaining cookies during the next hour. If Sue had 12 cookies left, how many cookies did she bake?
Mathematics
1 answer:
Charra [1.4K]3 years ago
6 0
The answer is she as 21 cookies left to sold until she is done in the fundraiser that her school is having.
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32 divided by 11 is it two or 10 Please help me
mars1129 [50]

Answer:

2 with a remainder of 10

Step-by-step explanation:

11 goes into 32  2 times which is 22. Then there is 10 leftover as a remainder.

5 0
3 years ago
Simplify.
Andrew [12]

Answer:

- 1210

Step-by-step explanation:

According to BODMAS / PEMDAS rule, we will do multiplication first and then subtraction . So -23 * 56 = -1288 and then the subtraction , 78 + (-1288) =78-1288= -1210

The fraction should be -1210 / 1

8 0
3 years ago
What is the solution to the system of equations below? y=2/5x-3 and x=-10
mojhsa [17]

Answer:

The solution is (-10,-7)

Step-by-step explanation:

y=2/5x-3 and x=-10

We know x = -10

Substitute the second equation into the first equation to find y

y = 2/5 (-10) -3

y = -4 -3

y = -7

The solution is (-10,-7)

4 0
3 years ago
Read 2 more answers
Let U = {q, r, s, t, u, v, w, x, y, z}
Sliva [168]

The Set A’∪ B =  { r, t, v, x, z, q, s, y, z }

We have the following sets -

U = {q, r, s, t, u, v, w, x, y, z}

A = {q, s, u, w, y}

B = {q, s, y, z}

C = {v, w, x, y, z}

We have to determine the set represented by -  A' ∪ B.

<h3>What is a Set?</h3>

A set is a collection of elements or numbers or objects, represented within the curly brackets { }. For example: {1,2,3,4} is a set of numbers.

According to question, we have -

U = {q, r, s, t, u, v, w, x, y, z}    (Universal Set)

A = {q, s, u, w, y}

B = {q, s, y, z}

C = {v, w, x, y, z}

Consider Set A = {q, s, u, w, y}

A' = U - A = {q, r, s, t, u, v, w, x, y, z} - {q, s, u, w, y} = { r, t, v, x, z }

and Set B = {q, s, y, z}

Now -

A' ∪ B = { r, t, v, x, z }  ∪  {q, s, y, z} = { r, t, v, x, z, q, s, y, z }

Hence, the Set A’∪ B =  { r, t, v, x, z, q, s, y, z }

To solve more questions on Set theory, visit the link below -

brainly.com/question/13042571

#SPJ1

6 0
2 years ago
A sleep time of 15.9 hours per day for a newborn baby is at the 10h percentile of the distribution of sleep times for all newbor
Step2247 [10]

The mean time in hours per day for newborn babies is 16.5 hours ⇒ D

Step-by-step explanation:

A sleep time of 15.9 hours per day for a newborn baby is at the 10th

percentile of the distribution of sleep times for all newborn babies

Assuming the distribution is normal with a standard deviation of

0.5 hour

To find the mean time let us do that

1. Use the normal distribution table to find the corresponding z-score

   for 10th percentile

2. Use the rule μ = x - zσ, where μ is the mean, σ is the standard

    deviation and x is the score

3. Substitute the values of x, σ and z in the rule to find μ

Look to the normal distribution table to find z-score that equivalent

to the area = 10/100 = 0.1 (10th percentile)

∵ z-score = -1.28

∵ σ = 0.5 hour

∵ x = 15.9

∵ μ = x - zσ

- Substitute the values in the rule

∴ μ = 15.9 - (-1.28)(0.5)

∴ μ = 15.9 + 0.64

∴ μ = 16.54 ≅ 16.5 hours

The mean time in hours per day for newborn babies is 16.5 hours

Learn more:

You can learn more about the normal distribution curve in brainly.com/question/8799684

#LearnwithBrainly

6 0
3 years ago
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