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Alina [70]
2 years ago
6

Help plssssss

Mathematics
1 answer:
den301095 [7]2 years ago
4 0

Answer:

Option 4

Step-by-step explanation:

Group B, because seven children have a forearm length longer than 10 inches.

Additional verification :

Finding average forearm length of Group A :

  • 9(3) + 10(5) + 11(2) / 10
  • 27 + 50 + 22 / 10
  • 99/10
  • 9.9

Finding average forearm length of Group B :

  • 10(3) + 11(4) + 12(3) / 10
  • 30 + 44 + 36 / 10
  • 100/10
  • 10

Group B clearly has the longer forearm length.

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A local charity receives 1/3 of funds raised during a craft fair and a bake sale. The total amount given to the charity was $137
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Answer:

$412.35

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Help help help help pls
Monica [59]

Answer:

\theta = 82.2^\circ

Step-by-step explanation:

Let \  \angle BAC = \theta

Opposite = BC ,

Adjacent = AB = x = 3 ,

Hypotenuse = AC = y = 22

<em><u>Using trigonometric ratios.</u></em>

sin \theta = \frac{opposite}{hypotenuse }\\\\cos \theta = \frac{adjacent}{hypotenuse}\\\\tan \theta = \frac{opposite}{adjacent}

Since we have adjacent and hypotenuse we use cosine's  ratio

to find the angle.

           cos \theta = \frac{x}{y} = \frac{3}{22} \\\\\theta = cos^{-1} \frac{3}{22} = 82.16 = 82.2^\circ

6 0
3 years ago
A girl ran to the store at a speed of 6mph, and walked back at 4mp. If her round trip took 15 minutes, how far away is the store
MariettaO [177]

Answer:

0.6 miles

Step-by-step explanation:

Let's say the store is x miles away, she walks to the store in a hours, and she walks back in b hours.

First, her total time = time walked there + time walked back = a + b = 15 minutes = 1/4 of an hour = 0.25 hours

a + b = 0.25 (because a and b are in hours)

distance = speed * time

x = 6 miles/hour * a hours = 6a miles

x = 4 miles/hour * b hours = 4b miles

If we can find a or b, we can find x.

4b = x = 6a

4b = 6a

a + b = 0.25

We now have two equations with two variables. Using substitution, we can solve for one of them

a + b = 0.25

subtract a from both sides to find b

0.25 - a = b

plug that into the other equation, 4b = 6a

4(0.25-a) = 6a

1 - 4a = 6a

add 4a to both sides to isolate a and its coefficient

1 = 10a

divide both sides by 10 to solve for s

a = 1/10 of an hour = 0.1 of an hour = 60 minutes / 10 = 6 minutes

6a = x

6(0.1) = x

0.6 = x

the store is 0.6 miles away

6 0
2 years ago
5 wholes 2/3 gallon in 2 hours
Firdavs [7]
What do you mean? I don't think it's enough information
4 0
3 years ago
What is the simplified form?
MAVERICK [17]

Answer:

A fraction is in simplest form when the top and bottom cannot be any smaller, while still being whole numbers.

Step-by-step explanation:

6 0
3 years ago
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