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gregori [183]
3 years ago
8

What is the product of (4y-3)(2y^+3y-5)

Mathematics
1 answer:
MAVERICK [17]3 years ago
4 0

the answer is  

8y^3y−4    −6y^3y−5

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What two factors multiply to -90 add up to 27
JulsSmile [24]

Answer:

30 and -3

Step-by-step explanation:

30 x -3=-90

30-3=27

7 0
2 years ago
A large school district in southern California asked all of its eighth-graders to measure the length of their right foot at the
Ber [7]

Answer:

The probability of the sample mean foot length less than 23 cm is 0.120

Step-by-step explanation:

* Lets explain the information in the problem

- The eighth-graders asked to measure the length of their right foot at

  the beginning of the school year, as part of a science project

- The foot length is approximately Normally distributed, with a mean of

 23.4 cm

∴ μ = 23.4 cm

- The standard deviation of 1.7

∴ σ = 1.7 cm

- 25 eighth-graders from this population are randomly selected

∴ n  = 25

- To find the probability of the sample mean foot length less than 23

∴ The sample mean x = 23, find the standard deviation σx

- The rule to find σx is σx = σ/√n

∵ σ = 1.7 and n = 25

∴ σx = 1.7/√25 = 1.7/5 = 0.34

- Now lets find the z-score using the rule z-score = (x - μ)/σx

∵ x = 23 , μ = 23.4 , σx = 0.34

∴ z-score = (23 - 23.4)/0.34 = -1.17647 ≅ -1.18

- Use the table of the normal distribution to find P(x < 23)

- We will search in the raw of -1.1 and look to the column of 0.08

∴ P(X < 23) = 0.119 ≅ 0.120

* The probability of the sample mean foot length less than 23 cm is 0.120

4 0
3 years ago
0.25 l of milk every day.how much milk does he drink in 5 days?
tino4ka555 [31]

Answer:

1.25

Step-by-step explanation:

.25 x 5 = 1.25

pls mark brainliest!!

8 0
3 years ago
Read 2 more answers
An electric motor pumps water into a pool at a rate of 500 liters per hour. After a tune up, its rate increases by x liters per
Alex73 [517]

Answer: 3(500+x)=1800

4 0
3 years ago
What percent of 600 is 24?
Delicious77 [7]
1. 4%
2. 24
3. 164
4. 2%
Work shown

3 0
3 years ago
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