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cestrela7 [59]
3 years ago
8

A teacher had 85 red grapes and 19 students. If each student received the same number of

Mathematics
1 answer:
nata0808 [166]3 years ago
7 0
Divide 85 and 19.
85/19= 4.417....
So, we know that each student can’t have above 4. But, if each student has 4 grapes, 19x4 = 76.
85-76=9
There are 9 grapes left over.
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If the sample size is multiplied by 4, what happens to the standard deviation of the distribution of sample means?
Feliz [49]

Increasing the sample size by a factor of 4 or multiplying it by 4 is equal to increasing the standard error by 1/2.  Therefore, the interval will be half as varied.  This also works almost for population averages as lengthy as the multiplier from the t-curve doesn't modify much when increasing the sample size.

6 0
3 years ago
There are 20 alligators in the swamp. Each year, the number of alligators increases by 25%. There are 25 crocodiles in the swamp
Vera_Pavlovna [14]

Answer:

Step-by-step explanation:

We have given that:

There are 20 alligators in the swamp. Each year, the number of alligators increases by 25%. There are 25 crocodiles in the swamp. Each year, 10 new crocodiles join the swamp

Part A:

According to the above mentioned statement the function for representing the number of alligators and crocodiles in the swap throughout the year is:

Alligators = y=20(1.25)^x (x represents years)

crocodiles: y=10x+25

Part B:

Number of alligators after 4 years in the swap = y=20(1.25)^x

Number of alligators after 4 years in the swap = y=20(1.25)^4

Number of alligators after 4 years in the swap=48.82

This shows that about 48 to 49 alligators will be there in the swap after 4 year

Number of crocodiles after 4 years in the swap = y= 10(4)+25 = 65

Part C:

We will use the graph method to solve this part:

After approximately 7 years, the number of animals of each type will be the same, 95.

7 0
3 years ago
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Stolb23 [73]
Answer is C                                                              qwertyuiopoiuytrewertyuioiuytrewerty
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3 years ago
What is one of the best methods to multiply these binomials: (x+8)(x+7)
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The answer is C, you can do this by doing FOIL
3 0
2 years ago
Read 2 more answers
Jason bought a car for $12500. According to the insurance company, the value of the car depreciates by 7% each year. What will t
Orlov [11]

Answer:

8696.10

Step-by-step explanation:

If a car depreciates by 7% each year, this means that 7% of its value that year is subtracted from its previous value. In other words, you can multiply its value by (1-0.07)=0.93.

12500\cdot 0.93^5\approx 8696.10. Hope this helps!

3 0
3 years ago
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