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AnnZ [28]
3 years ago
9

Evaluate the function: y= -2x + 11 when x = 5.y=_____​

Mathematics
1 answer:
gregori [183]3 years ago
6 0

Answer:

y=1 when x=5

Step-by-step explanation:

-2(5)+11=-10+11=1

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A simple random sample of 25,000 individuals are surveyed in order to determine the prevalence of individuals that contracted th
Neko [114]

Answer:

The prevalence of flu for the past year, as indicated from the survey participants, was of 17%.

Step-by-step explanation:

Given the survey, the prevalence of the flu, as a percentage, is given by:

Number of individuals diagnosed with flu, multiplied by 100, and divided by the size of the sample.

In this question, we have that:

Sample of 25,000, and 4,250 of those had been diagnosed with the flu at some point in the past year. So, the prevalence of the flu is given by:

\frac{4250*100}{25000} = 17

The prevalence of flu for the past year, as indicated from the survey participants, was of 17%.

4 0
3 years ago
Erin wants to know if warming up will help runners sprint faster. Twenty-six track and field athletes volunteered to participate
dmitriy555 [2]

Answer:

hope it Helps

Step-by-step explanation:

Brainliest please

8 0
3 years ago
Three Texas drovers met on a highway and began to dicker as follows:
Alik [6]

Answer:

  • Jim's: 7
  • Duke's: 21
  • Hank's: 11

Step-by-step explanation:

Let J, D, and H represent the drove sizes of Jim, Duke, and Hank.

  2(H -6 + 1) = (J +6 -1) . . . . . Hank's offer

  3(D -14 +1) = (H +14 -1) . . . . Duke's offer

  6(J -4 +1) = (D +4 -1) . . . . . . Jim's offer

These equations can be simplified to ...

  2H - J = 15

  3D - H = 52

  6J - D = 21

__

<u>Solution</u>

Adding twice the second equation to the first gives ...

  2(3D -H) +(2H -J) = 2(52) +(15)

  6D -J = 119

Adding 6 times the third equation to this one gives ...

  6(6J -D) +(6D -J) = 6(21) +(119)

  35J = 245

  J = 7

Using this value in the third equation gives ...

  6(7) -D = 21

  42 -21 = D = 21

Using the value of J in the first equation gives ...

  2H -7 = 15

  H = (15 +7)/2 = 11

Then the solution is (J, D, H) = (7, 21, 11).

Jim's drove had 7 animals; Duke's drove had 21 animals; Hank's drove had 11 animals.

5 0
3 years ago
All squares are rectangles.<br><br> A. True<br> B. False
Arisa [49]

Answer:

A true

Step-by-step explanation:

Rectangles have parallel sides and 90 degree angles.

Squares have parallel sides and 90 degree angles and equal length sides

Square are a subset of rectangles

All squares are rectangles

5 0
3 years ago
Read 2 more answers
Subtract fraction and simplify if needed
Harrizon [31]
First you need to find the common denominator. both 6 and 7 go in to 42 evenly

multiply 5/6 by 7 to get 35/42
multiply 2/7 by 6 to get 12/42
subtract 12 from 35 to get 23

23/42
6 0
3 years ago
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