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WITCHER [35]
3 years ago
7

The answer please.......

Mathematics
1 answer:
Vikki [24]3 years ago
5 0

Answer:

c

Step-by-step explanation:

please give brainliest

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Scott is on his school's academic team. On average, it takes Scott 4 minutes, with a standard deviation of 0.25 minutes, to solv
uysha [10]

Answer:

15.87% is the chance that Scott takes more than 4.25 minutes to solve a problem at an academic bowl.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 4 minutes

Standard Deviation, σ = 0.25 minutes

We standardize the given data.

Formula:

z_{score} = \displaystyle\frac{x-\mu}{\sigma}

P(more than 4.25 minutes to solve a problem)

P( x > 4.25) = P( z > \displaystyle\frac{4.25 - 4}{0.25}) = P(z > 1)

= 1 - P(z \leq 1)

Calculation the value from standard normal z table, we have,  

P(x > 4.25) = 1 - 0.8413 = 0.1587 = 15.87\%

Thus,15.87% is the chance that Scott takes more than 4.25 minutes to solve a problem at an academic bowl.

8 0
3 years ago
What if Jake has two shirts, five pairs of pants and four sweaters? How many
Stolb23 [73]

Answer:

5

Step-by-step explanation:

There are 5 pants 2 shirts and 4 sweaters which makes 6 together, paired up makes 5 outfits and one extra sweater or shirt.

4 0
3 years ago
What is 50 miles on 2.5 gallons as a unit rate
Bas_tet [7]
50/2.5= 20 Unit rate is 20 miles per gallon
4 0
3 years ago
Read 2 more answers
(3x-1)(ax+b) = 12x² - 19x + cWork out the values of a, b and c.
Snezhnost [94]
The value of a, b, c is
a=4
b= -5
c= 5

4 0
3 years ago
Find the values for a and b that would make the equality true.
zepelin [54]

Answer:

a = - 4, b = 5

Step-by-step explanation:

Expand the left side, then compare the coefficients of like terms.

- 3(2x² + ax + b)

= - 6x² - 3ax - 3b, compare to - 6x² + 12x - 15

Compare coefficients of x- terms

- 3a = 12 ( divide both sides by - 3 )

a = - 4

Compare constant terms

- 3b = - 15 ( divide both sides by - 3 )

b = 5

8 0
3 years ago
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