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3 years ago

Use technology or a z-score table to answer the question.

Mathematics

1 answer:

AlexFokin [52]3 years ago

7 0

Answer:

D. 100

Step-by-step explanation:

1. Find the z-score: 165-176/11.4 = -1.2

2. Find the percentage of the z-score. Here it's 16.85%

3. Because we are searching for the amount of members that weigh MORE than 165 pounds and not LESS, we need to find the greater percentage by subtracting 16.85% from 100% which is 83.15%. This is the percentage of people that weigh more than 165 pounds.

4. Multiply the percentage by the number of members: 83.15%*120 = 99.78

5. Round it to a whole number because someone can't be 0.78 of a person. You get 100 members.

Also, I took the test :)

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LUCKY_DIMON [66]

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4 years ago

An executive drove home at an average speed of 30 mph to an airport where a helicopter was waiting. The executive boarded the he

wlad13 [49]

Answer:

120 miles

Step-by-step explanation:

Formulate equations.

Distance = rate * time.

D1 = distance from home to airport

D2 = distance from airport to off

D1 + D2 = 150

30 x t1 + 60 x t2 = 150

Divide through by 30

t1 + 2t2 = 5 ----- equation 1

Entire trip took 3 hours

t1 + t2 = 3 -------------------- equation 2

Solve equation 1 and 2 and you get

t1 = 1 hour

t2 = 2 hour

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3 years ago

CHECK MY ANSWER ASAP

weqwewe [10]

Question 1: Equiangular

Question 2: Area of the parallelogram = 48 square centimeters

Question 3: Perimeter of the rectangle = 42 ft

Question 4: Area of the trapezoid = 154 square inches

Solution:

Question 1:

The given polygon is a rectangle.

The angles of each side of the polygon is 90°.

This means all angles are equal.

Hence Option A equiangular is the correct answer.

Question 2:

Area of the parallelogram = Base × Height]

= 6 cm × 8 cm

Area of the parallelogram = 48 square centimeters

Question 3:

Perimeter of the rectangle = 2(length + width)

= 2( 15 ft + 6 ft)

= 2(21 ft)

Perimeter of the rectangle = 42 ft

Question 4:

Area of the trapezoid = $\frac{1}{2}\times \text{sum of the parallel sides}\times \text{height}$

$$=\frac{1}{2}\times (14+ 8)\times 14$

$$=\frac{1}{2}\times 22\times 14$

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3 years ago

Which relation is not a function?

jok3333 [9.3K]

It would be w beacuse xy and w

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3 years ago

2x−1/4y=1 solve for y please

Ivan

Answer:

EASY DUBS:

Step-by-step explanation:

2*x-((1/4)*y) = 1 // - 1

2*x-((1/4)*y)-1 = 0

2*x+(-1/4)*y-1 = 0

2*x-1/4*y-1 = 0 // + -1/4*y-1

2*x = -(-1/4*y-1) // : 2

x = (-(-1/4*y-1))/2

x = (1-(-1/4*y))/2

3 0

3 years ago

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