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3 years ago

An employee at a gym wants to select a random sample of gym members for a survey about their exercise habits.

Mathematics

2 answers:

Scrat [10]3 years ago

6 0

Answer:

no no yes yes

Step-by-step explanation:

34kurt3 years ago

5 0

Answer:

No, no, yes, no

Step-by-step explanation:

The first one is not random. He is sampling only the earliest gym goers.

The second one is not random. He is sampling only from one zip code.

The third one is random. He is using a random number generator.

The fourth one is not random. He is sampling only volunteers.

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Simplify this rational expression. 2x^2+5x+3/2x^2-x-3

Murljashka [212]

Answer:

$2x+3$ / $2x-3$

Step-by-step explanation:

firstly we make two steps to simplify this question.

1st step: simplify $2x^{2} +5x+3$

to simplify this we use factorization

$2x^{2} +2x+3x+3$

$2x(x+1) +3(x+1)$

$(2x+3) (x+1)$ .....(1)

2nd step:simplify $2x^{2} -x-3$

$2x^{2} +2x-3x-3$

$2x(x+1)-3(x+1)$

$(2x-3)(x+1)$ .....(2)

now dividing (1) and (2), we get the answer

$2x+3/2x-3$

5 0

3 years ago

Brian bought a tablet that was discountedby 15%. the tablet normally sells for y dollars. eith tax, Brian paid $309. if the tax

sertanlavr [38]

309-20 x .15
but yeah

3 0

3 years ago

Find the value of x pls

Basile [38]

Step-by-step explanation:

As we can see it a right angled triangle

so <y =90°

Now

3x + 11° + 25° + 90° = 180°{being sum of angles of triangle}

3x + 126° = 180°

3x = 54°

X = 18°

6 0

3 years ago

Christina is using her computer to design invitations to her birthday party. The text of the invitation is contained in a rectan

lawyer [7]

B is the answer have a nice day

4 0

3 years ago

Read 2 more answers

Rally sold 30 flower baskets at a market. She purchased 30 baskets for $142.65, 185 yards of ribbon for $.07 per yard, and $252.

rosijanka [135]

Answer:

She spent 142.65 for baskets, 252.50 for flowers and 185 * 0.07 or 12.95 for ribbons for a total outlay of 408.10. Since she made 30 baskets, that is 408.10/30 = 13.60 1/3 per basket.

If she sold all 30 for 25.99 each, that is 779.70 for a profit of 361.60

Step-by-step explanation:

7 0

3 years ago