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Zinaida [17]
3 years ago
5

Need math help please

Mathematics
2 answers:
solmaris [256]3 years ago
7 0

Answer:

it is 4

Step-by-step explanation:

3 times 4 = 12 and 12 + 8 = 20

brainliest plz!!!


vladimir2022 [97]3 years ago
7 0

Answer:

x = 4

Step-by-step explanation:

the dimensions of the small triangle to the large triangle are increasing by multiplying by 5.

5 times 5 equals 25

3 times 5 equals 15

so 4 times 5 equals 20

then, you have to solve the equation:

20 = 3x + 8

subtract 8 from both sides

12 = 3x

divide both sides by 3

12 divided by 3 equals 4

so x = 4


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4vir4ik [10]

Answer:

a) 2/5

b) 1/10

Step-by-step explanation:

There are 20 people total.

a is that the chosen child is a girl.

2 + 6 = 8, --> there are 8 girls --> simplify

8/20 = 4/10 = 2/5

b is the probability that the chosen child is a left-handed girl, --> there are 2 left-handed girls --> 2/20 --> simplify to 1/10

And thus, we have our answers.

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How much would you get payed if you get payed 15 an hour and work 40 hours in a week
Oxana [17]

Answer:

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3 years ago
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aksik [14]

Answer:

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3 years ago
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Two boats left a base camp at bearing of S60°E and S50°W at speeds of 50km/h and 70km/h respectively. Find the distance between
ivolga24 [154]

Answer:

  • 197.93 km

Step-by-step explanation:

Let the base camp is point A and boats' locations after two hours are points B and C.

By connecting the three points together we get a triangle ABC with sides:

  • AB = 50*2 = 100 km
  • AC = 70*2 = 140 km

The angle between AB and AC is:

  • 60 + 50 = 110 degrees (opposite directions from south)

We are looking for the distance BC, which can be found by using the law of cosines:

  • BC² = AB² + AC² - 2AB*AC*cos ∠BAC
  • BC² = 100² + 140² - 2*100*140*cos 110°
  • BC²  = 39176.56 (rounded)
  • BC = √39176.56 = 197.93 km (rounded)

The distance between the boats is 197.93 km.

7 0
2 years ago
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