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3 years ago

PLEASE HELP WILL GIVE BRAINLIEST!!!!!! In a survey, 250 adults and children were asked whether they know how to swim.

Mathematics

2 answers:

ikadub [295]3 years ago

8 0

The answer would be B

rodikova [14]3 years ago

5 0

B because .06 + .12 = .18 which is 18% out of 250 people

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2x - 4y = -2<br>2x + 3y = 12

Iteru [2.4K]

Answer: x=3 and y=2

Your welcome

8 0

3 years ago

Read 2 more answers

This table gives a few (x,y)(x,y)left parenthesis, x, comma, y, right parenthesis pairs of a line in the coordinate plane. -28 -

Serhud [2]

Answer:

The y-intercept is y = 2

Step-by-step explanation:

A linear function has the following format:

$y = mx + b$

In which m is the slope and b is the y-intercept, which is the value of y when x = 0.

We are given these three points:

(-28, -54)

(-21, -40)

(-14, -26)

We use two of them to build a system, to find values for m and b.

(-28, -54)

This means that when $x = -28, y = -54$

$y = mx + b$

$-54 = -28m + b$

$28m = b + 54$

$m = \frac{b + 54}{28}$

(-21, -40)

This means that when $x = -21, y = -40$

$y = mx + b$

$-40 = -21m + b$

$-40 = -21\frac{b + 54}{28} + b$

$-40 = \frac{-21b - 1134 + 28b}{28}$

$7b - 1134 = -40*28$

$7b = 14$

$b = \frac{14}{7}$

$b = 2$

The y-intercept is y = 2

7 0

3 years ago

You and your friend went shopping. You bought 2 hats and 3 pairs of gloves for $28.25. Your friend bought 1 hat and 1 pair of gl

vodomira [7]

Answer:

One pair of gloves costs $3.75.

Step-by-step explanation:

Systems of equations

x=hats y=gloves

2x+3y=28.25

x+y=12.25

2(12.25-y)+3y=28.25

24.5+y=28.25

y=3.75

8 0

3 years ago

Pleas help! It’s due soon and I don’t have much time. :(

KonstantinChe [14]

Answer:

5) n * n * n * n * 6 * 6 * 6

6) 9 * 9 * x * x * x

7) 3 * 3 * 3 * y * y

Step-by-step explanation:

4 0

3 years ago

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A. 20 mph<br> B. 35 mph<br> C. 70 mph<br> D. 100 mph

jeka94

Girl it’s D, i’m kidding i don’t know but what grade are you in this looks easy

6 0

3 years ago

Read 2 more answers