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3 years ago

Math is my struggle, I hope I can get an answer soon

Mathematics

1 answer:

mariarad [96]3 years ago

5 0

Yuri is wrong because 28-13 = 15 and 15×12=180 so the answer is B

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Cynthia completed 2/3 of the items on her to - do listin the morning and finished 1/6 of the items during her lunch break. Wht f

adell [148]

She finished 5/6 of her work and still has 1/6 do to.

4 0

3 years ago

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Frankie has 5 red marbles , 16 black marbles 3 green miniature balls and 9 yellow miniature balls in a jar at his house . What i

user100 [1]

Answer:

3:16

Step-by-step explanation:

5 red marbles.

16 black marbles.

3 green miniature balls.

9 yellow miniature balls.

We want to determine the ratio of the number of the minimum balls to the number of black marbles in the jars.

The minimum of a set of a number is the lowest value in that set of number. e.g. the minimum of 2,5,1 and 6 is 1.

Minimum Number of balls=3

Number of Black Marbles=16

Ratio of the number of the minimum balls to the number of black marbles in the jars is therefore given as:

3:16

4 0

4 years ago

Read 2 more answers

X to the third plus 64 equal 0

GREYUIT [131]

x^3 + 64 = 0

Subtract both sides by 64:

x^3 = -64

x = -4

3 0

4 years ago

A supervisor records the repair cost for 22 randomly selected VCRs. A sample mean of $75.50 and standard deviation of $18.07 are

Virty [35]

Answer:

The 99% confidence interval for the mean repair cost for the VCRs

(65.801, 85.199)

Step-by-step explanation:

Explanation:-

Mean of the sample(x⁻) = $75.50

Given the standard deviation of the sample (S) = $18.07

Given the size of the sample 'n' = 22

Degrees of freedom = n-1 =22-1 =21

critical value t₍₀.₀₁, ₂₁₎ = 2.5176

The 99% confidence interval for the mean repair cost for the VCRs

$(x^{-} - t_{0.01} \frac{S.D}{\sqrt{n} } , x^{-} +t_{0.01} \frac{S.D}{\sqrt{n} })$

$(75.50 - 2.5176 \frac{18.07}{\sqrt{22} } , 75.50 +2.5176 \frac{18.07}{\sqrt{22} })$

( 75.50 - 9.699 , 75.50 + 9.699 )

(65.801, 85.199)

Final answer:-

The 99% confidence interval for the mean repair cost for the VCRs

(65.801, 85.199)

8 0

3 years ago

4(6x +12) = -216, what is X?

ira [324]

Answer: x=-11

Step-by-step explanation:

4(6x+12)=-216 Distribute the 4 in the parenthesis

24x+48=-216

24x=-216

-216 divided by 24

answer= -11

3 0

3 years ago

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