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Nookie1986 [14]
2 years ago
8

30pts

Mathematics
1 answer:
Ivan2 years ago
5 0

Step-by-step explanation:

1maybe you neeeda put it in calculator cause the problem easy just got to try

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What are solutions to 40x^22-30x=135
Fiesta28 [93]

Answer:

34

Step-by-step explanation:

3 0
3 years ago
For a sample of n = 30 scores, a score that is 6 points above the mean has a z-score of z = 1.50. What is the sample standard de
sleet_krkn [62]

Answer:

4

Step-by-step explanation:

The z-score is calculated by the following formula

z=(x-μ)/σ

where

μ=Population mean

σ=Population standard deviation

If the z-score for a specific sample mean is discussed then z-score is computed as

z=xbar-μ/σxbar.

where

μ=Population mean

σxbar=Sample standard deviation

As the population mean and mean of sampling distribution of mean are equal so, μ is used in above equation.

Now, the z-score is given

1.5=xbar-μ/σxbar

σxbar=xbar-μ/1.5.

Also we know that z-score corresponds to a score that is 6 points above mean which means that xbar-μ=6.

σxbar=6/1.5

σxbar=4.

Thus, the required sample standard deviation is 4.

6 0
3 years ago
The Valley High School Auditorium is able to seat 8 elementary school groups of 65 students each. Use the distributive property
Nezavi [6.7K]
If there are 8 groups of 65 students, that means they can seat 8*65 students total. 520 students
6 0
3 years ago
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Solve the equation using the distributive property and properties of equality. Negative 5 (a + 3) = negative 55 What is the valu
ivann1987 [24]

Answer:

negative 14

Step-by-step explanation:

took the on edge

8 0
2 years ago
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A baseball stadium has 45,000 seats. If tickets have been brought for 5/8 of the seats for the next game, how many seats are sti
Nadusha1986 [10]

Subtraction is a mathematical operation that reflects the removal of things from a collection. The number of seats that are available in the stadium is 16,875.

<h3>What is subtraction?</h3>

Subtraction is a mathematical operation that reflects the removal of things from a collection. The negative symbol represents subtraction.

Given that a baseball stadium has 45,000 seats, out of this 45,000 seats, 5/8 of the seats are bought for the next game.

Therefore, the number of seats that are still available is,

Number of seats available

= Total number of seats - Seats already sold

= 45,000 - (45,000 × 5/8)

= 45,000 - 28,125

= 16,875

Hence, the number of seats that are available in the stadium is 16,875.

Learn more about Subtraction here:

brainly.com/question/1927340

#SPJ1

6 0
1 year ago
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