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1 year ago

Marissa is painting her rectangular patio, with the exception of a bench that does not need to be painted:

Mathematics

1 answer:

Eva8 [605]1 year ago

6 0

The answer is B.
The reason behind it being that since the sides of the entire patio are given, you can multiply them and get the area of the entire patio, then you can subtract the area of the bench, which in this case is 12 because 2 times 6 is 12. Since you can’t solve for (x+20) or (x+10), you can multiply them by themselves. This would give you the equation (x+20)(x+10)-12.

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Sole the given inequality and graph it on the number line. -2x - 5 < 3

Anon25 [30]

Answer:

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2 years ago

Rewrite x^2+12x+42 in the form (x+b)^2 +c

Rzqust [24]

This is completing the square:

(x^2+12x+36)+42-36

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2 years ago

What is another name for the set of counting numbers

Masteriza [31]

Its is called A positive integer or a natural number.

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2 years ago

Question 7 (1 point)

GaryK [48]

Answer: 3

Step-by-step explanation:

Scale factor is the ratio of the corresponding sides, so:

$\frac{18}{6}=3$

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1 year ago

Supposethat z is a normally distributed variable with variance 4. You collect a sample of size n for which you get a sample aver

Nikitich [7]

Answer:

The sample size is 4

Step-by-step explanation:

Null hypothesis: The mean is 2

Alternate hypothesis: The mean is less than 2

Mean = 3

sd = sqrt(variance) = sqrt(4) = 2

At 95% confidence level, t-value is 1.960

Assuming the lower bound of the mean is 1.04

Lower bound = mean - (t×sd/√n)

1.04 = 3 - (1.96×2/√n)

3.92/√n = 3 - 1.04

3.92/√n = 1.96

√n = 3.92/1.96

√n = 2

n = 2^2

n = 4

7 0

2 years ago