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Lelechka [254]
3 years ago
6

Fourteen percent of u.s. residents are in their forties. consider a group of eight u.s. residents selected at random. find the p

robability that at least four of the people in the group are in their forties.
Mathematics
1 answer:
vesna_86 [32]3 years ago
6 0
Answer is always A. It just is.. don't ask how i know.
You might be interested in
(20 points) I need help please
-BARSIC- [3]

Answer:

The perimeter is 62ft

Step-by-step explanation:

5 + (6 x 4) + (2 x 8) + 17

5 + 24 + 16 + 17

29 + 33

62

7 0
2 years ago
What is the value of the function when x =2
Harrizon [31]

Answer:

To make this easier, first draw or imagine a vertical line at x=2

Find where the vertical line and the graph intersects.

Draw or imagine that point of intersection.

Now, draw or imagine a horizontal line that goes through the point of intersection.

That horizontal line tells us the the value of the function by passing through that mark that says "-2"

The function's value at x=2 is -2.

Have an awesome day! :)

Step-by-step explanation:

8 0
2 years ago
If sally got 28 questions correct and received 70% on the exam, how many questions were on the exam
Furkat [3]

Answer: 40

Step-by-step explanation:

Number of correct questions Sally got = 28 questions

Percentage of correct questions answered= 70% on the exam,

Total number of questions in the exam = Unknown

Let the total questions in the exam be represented as y.

Since Sally got 70% correctly, this will be:

70% of y = 28

70/100 × y = 28

0.7 × y = 28

0.7y = 28

Divide both side by 0.7

0.7y/0.7 = 28/0.7

y = 40

There are 40 questions in the exam.

7 0
3 years ago
7. Jen has a collection of 45 corn husk dolls that she wants to arrange in equal groups. Write a fact family that shows how Jen
Rainbow [258]

Answer:

9 × 5

5 × 9

3 × 15

15 × 3

1 × 45

45 × 1

Step-by-step explanation:

45 corn husk dolls can be arranged in equal groups

Number of husk by number of group

9 × 5

5 × 9

3 × 15

15 × 3

1 × 45

45 × 1

Facts family that shows how Jen could arrange her corn husk dolls is shown above

5 0
3 years ago
What is the sum of the first thirteen terms in a geometric series with a<br> r = 3 a1= -10
Ipatiy [6.2K]

To calculate the sum of the first thirteen terms of the geometric series, we use the formula below.

Formula:

  • S₁₃ = a(rⁿ-1)/(r-1).............. Equation 1

Where:

  • S₁₃ = Sum of the first thirteen terms of the geometric series.
  • a = First term of the series
  • r = Common ratio

Given:

  • a = -10
  • r = 3
  • n = 13

Substitute these values into equation 1

  • S₁₃ = -10(3¹³-1)/(3-1)
  • S₁₃ = -7971615
7 0
2 years ago
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