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kicyunya [14]
2 years ago
14

A survey asked a random sample students if they estimated they spent more or less than an hour a day on social media.

Mathematics
1 answer:
Hitman42 [59]2 years ago
7 0

43

so sorry if this is incorrect.

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On a school trip, the ratio of the teachers to students is 2:21. The ratio boys to girls is 4:3. If there are 18 girls girls on
Alexandra [31]

Answer:

4

Step-by-step explanation:

Let's say B is the number of boys and T is the number of teachers.

T / (B + 18) = 2/21

B/18 = 4/3

Solve the second equation for B.

B = 24

Plug into the first equation to find T.

T / (24 + 18) = 2/21

T = 4

6 0
3 years ago
What translation is made from f(x) → -f(x)?
Hunter-Best [27]

Answer: The correct answer is “this is a reflection across the x-axis”

5 0
3 years ago
Algebra work need help<br> please show working
Nastasia [14]

Expand the left side:

(3x + 2) (5x + 1) = 15x² + 10x + 3x + 2 = 15x² + 13x + 2

Then a = 15 and b = 13, so a - b = 2.

8 0
2 years ago
What are the coordinates of the image after a dilation with the center at the origin and a scale factor of 2?
Marina CMI [18]

(-2, 2) (8,2) (8, -2) (-2, -2)

3 0
3 years ago
Read 2 more answers
How many numbers are less than 1000 that contain only the digits 5 or 6 or both 5 or 6? A digit may be used more than once. 
yaroslaw [1]
5,6
55,56
65,66
555,556,565,566
655,656.665.666

Looks like there are 14 numbers that use only the digits 5 or 6 or both 5 or 6 that are under 1000.
6 0
3 years ago
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