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2 years ago

I need help please!!

Mathematics

1 answer:

Sergio039 [100]2 years ago

5 0

Answer:

16 cm2

Step-by-step explanation:

By equa tion of area of triangle: S = 1/2 * height * base

Triangle B: 32 = 1/2 * 8 * x --> x = 8 (cm)

The base of triangle A is half of the base of triangle B so it is 4 cm.

The area of triangle A = 1/2 * 8 * 4 = 16 (cm2)

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The data below are the monthly average high temperatures for New York City. What is the five-number summary? 40, 40, 48, 61, 72,

yawa3891 [41]

Answer:

B) Sample minimum: 40, Sample maximum: 84

Q1: 45, Median: 63, Q3: 77

Step-by-step explanation:

The first step is to write the temperatures in crescent order:

40, 40, 42, 48, 54, 61, 65, 72, 76, 78, 84, 84,

The sample minimum is the lowest value = 40

The sample maximum is the highest value = 84.

Since there are 12 numbers, the sample median is the average between the 6th and 7th terms:

$M = \frac{61+65}{2}\\ M=63$

The first quartile is the average between the 3rd and 4th terms:

$Q_1 = \frac{42+48}{2}\\ Q_1=45$

The third quartile is the average between the 9th and 10th terms:

$Q_3 = \frac{76+78}{2}\\ Q_3=77$

Therefore, the answer is:

B) Sample minimum: 40, Sample maximum: 84

Q1: 45, Median: 63, Q3: 77

8 0

2 years ago

Write 55 as a product of its prime factors

Roman55 [17]

Answer:

55 = 5 × 11

Step-by-step explanation:

The only prime factors of 55 are 5 and 11, thus

55 = 5 × 11

4 0

2 years ago

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Carson's wheelbarrow can hold 345 pounds. If he has 121 pound of rock in the wheelbarrow what number of pounds p can he pull wit

dangina [55]

Answer:

$p\leq 224\ lb$

The maximum number of pounds p is 224

Step-by-step explanation:

Let

p ----> the maximum number of pounds he can pull without going over the weight limit

we know that

121 pound of rock in the wheelbarrow plus p pounds must be at most 345 pounds

In this problem the word "at most" means "less than or equal to"

The inequality that represent this situation is

$p+121\leq 345$

solve for p

subtract 121 both sides

$p\leq 345-121$

$p\leq 224\ lb$

therefore

The maximum number of pounds is 224

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3 years ago

If x = 3 and y = -1, what is the value of xy ÷ -3?

Mariulka [41]

Answer: 1

Step-by-step explanation:

First multiply x and y which is 3 x -1 = -3

Then -3 ÷ -3 = 1

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3 years ago

Natalie walked 3/5 miles in 1/2 hour. How fast did she walk, in miles per hour?

nalin [4]

Answer:

1.2 mph

Step-by-step explanation:

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2 years ago

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