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mash [69]
3 years ago
10

Ms. Campbell is hosting a toy drive

Mathematics
2 answers:
Ber [7]3 years ago
8 0

Answer:

whos your teacher ? i had a teacher that named ms.campbell

Step-by-step explanation:

Westkost [7]3 years ago
5 0

Answer:

Step-by-step explanation:

Let Justin toy be x

Brainna as x - 10

Hannah as 2x

x + x - 10 + 2x = 130

4x = 130 + 10

4x = 140

x = 140/4

x = 35

Justin as 35toys

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What was the first ever Marvel comic book and when was made?
Margarita [4]

Answer:

The fantastic four in 1961

4 0
3 years ago
Newborn babies: A study conducted by the Center for Population Economics at the University of Chicago studied the birth weights
Fed [463]

Answer:

a) 615

b) 715

c) 344

Step-by-step explanation:

According to the Question,

  • Given that,  A study conducted by the Center for Population Economics at the University of Chicago studied the birth weights of 732 babies born in New York. The mean weight was 3311 grams with a standard deviation of 860 grams

  • Since the distribution is approximately bell-shaped, we can use the normal distribution and calculate the Z scores for each scenario.

Z = (x - mean)/standard deviation

Now,

For x = 4171,  Z = (4171 - 3311)/860 = 1  

  • P(Z < 1) using Z table for areas for the standard normal distribution, you will get 0.8413.

Next, multiply that by the sample size of 732.

  • Therefore 732(0.8413) = 615.8316, so approximately 615 will weigh less than 4171  

 

  • For part b, use the same method except x is now 1591.    

Z = (1581 - 3311)/860 = -2    

  • P(Z > -2) , using the Z table is 1 - 0.0228 = 0.9772 . Now 732(0.9772) = 715.3104, so approximately 715 will weigh more than 1591.

 

  • For part c, we now need to get two Z scores, one for 3311 and another for 5031.

Z1 = (3311 - 3311)/860 = 0

Z2 = (5031 - 3311)/860= 2  

P(0 ≤ Z ≤ 2) = 0.9772 - 0.5000 = 0.4772

  approximately 47% fall between 0 and 1 standard deviation, so take 0.47 times 732 ⇒ 732×0.47 = 344.

5 0
3 years ago
Susan works at the local Department store. She makes a 2% commission on all sales. She sells jewelry worth $20,000. What is her
Sergio039 [100]

Answer:

I think it's 2000

Step-by-step explanation:

4 0
3 years ago
Help me now !!!!!!!!!!!!!!!!
miskamm [114]

In the first diagram the value of k is 10 and in the second diagram the value of k is 15/2.

<h3>What is the triangle?</h3>

The triangle can be defined as a three-sided polygon in geometry, and it consists of three vertices and three edges. The sum of all the angles inside the triangle is 180°.

In the first diagram:

The sum of the 5k + 20 and 7k + 40 is 180

5k + 20 + 7k + 40 = 180

12k + 60 = 180

12k = 180 -60

12k = 120

k = 10

In the second diagram:

The sum of the two interior angles is equal to the exterior angle.

40 + 12k + 10 = 8k + 80

4k = 30

k = 30/4 = 15/2

Thus, in the first diagram the value of k is 10 and in the second diagram the value of k is 15/2.

Learn more about the triangle here:

brainly.com/question/25813512

#SPJ1

3 0
2 years ago
Write 770000 and round it to the nerest lakh​
VikaD [51]

Step-by-step explanation:

Seven lakh and seventy thousand.

This is your answer.

4 0
3 years ago
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