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2 years ago

5/7 times 28 cause I don’t know

Mathematics

2 answers:

Trava [24]2 years ago

6 0

5/7 times 28 is 20

hope this helps :')

Alex787 [66]2 years ago

5 0

Answer:

5/7 times 28 is 20

Step-by-step explanation:

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PLZ HELP!! Which real numbers are zeroes of the function?

astra-53 [7]

The correct answers are: 1/2, 2 and -2.

To get this, factor f(x)

f(x)=2x^3-x^2-8x+4

f(x)= (2x^3-x^2) - (8x -4)

f(x)= (2x-1)(x^2) + (2x-1)(-4)

f(x)= (2x-1)(x^2-4)

f(x)= (2x-1)(x-2)(x+2)

2x-1=0

2x=1

x=1/2

x-2=0

x=2

x+2=0

x=-2

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2 years ago

Ned moves a 450 square foot garden in 15 minuted

strojnjashka [21]

He moved it at 30ft./minute

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3 years ago

Which of the following is NOT an integer? A. 8/2 B. 1/4 C. 0 D. -5

vovangra [49]

Answer:

B. 1/4

Step-by-step explanation:

Even though A is a fraction it is also an integer (4)

6 0

2 years ago

Honolulu, hawaii, received 9.14 inches of precipitation fir all if 2001. In one day 3.67 inches of rain fell. How maby inches if

Molodets [167]

5.47 inches of rain

Hope this helps!

7 0

3 years ago

An educational psychologist wishes to know the mean number of words a third grader can read per minute. She wants to make an est

MrRa [10]

Answer:

85% level of the confidence interval is

(26.337, 26.662)

Step-by-step explanation:

Explanation:-

Given the size of the sample 'n' = 295

Mean of the sample x⁻ = 26.5

The Standard deviation of the Population = 2.7

85% level of the confidence interval is determined by

$(x^{-} - Z_{0.15} \frac{S.D}{\sqrt{n} } , x^{-} + Z_{0.15} \frac{S.D}{\sqrt{n} })$

Critical value Z₀.₁₅ = 1.036

85% level of the confidence interval is determined by

$(x^{-} - Z_{0.15} \frac{S.D}{\sqrt{n} } , x^{-} + Z_{0.15} \frac{S.D}{\sqrt{n} })$

$(26.9 -1.036 \frac{2.7}{\sqrt{295} } , 26.5 + 1.036 \frac{2.7}{\sqrt{295} })$

( 26.5 - 0.1628 , 26.5+0.1628)

(26.3372,26.6628)

7 0

3 years ago