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Ludmilka [50]
4 years ago
10

PLZ HELP PLZ I NEED HELP 15 POINTS PLZ HELP

Mathematics
1 answer:
Rudik [331]4 years ago
3 0
C
this is how you it:
8/56=1/7 =1:7
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the ratio of the heights of two similar triangles is 6:5 if the perimeter of the larger triangle is 49.2 feet. find the perimite
Mademuasel [1]

Answer:

41 feet

Step-by-step explanation:

We apply the theorem below:

If two similar triangles have a scale factor of a : b, then the ratio of their perimeters is a : b.

Let x be the perimeter of the smaller triangle

If the ratio of their heights is 6:5 and the perimeter of the larger triangle is 49.2 feet,

6:5=49.2:x

6/5=49.2/x

Cross multiplying

6x=49.2 X 5

6x=246

x=246/6=41

The perimeter of the smaller triangle is 41 feet

5 0
3 years ago
Which is the correct solution to the expression 3 + 5^2? You can use a calculator to find the answer.
SashulF [63]

Answer:

28

Step-by-step explanation:

because 5 to the power of 2 is 25 so you add the 3 and you get 28

5 0
3 years ago
You have a bag full of apples. There are 8 Jonathan (red), 4 Granny Smith (green), and 5 Golden Delicious (yellow) apples in the
vredina [299]

Answer:

Step-by-step explanation:

There are 8 Jonathan (red), 4 Granny Smith (green), and 5 Golden Delicious (yellow) apples in the bag.

a) Select 3 apples with replacement. Find the probability that all there are green.

  • Given that we are taking all apples with replacement, the probability of getting a green apples remains the same in all 3 trials. Therefore the probability here is computed as:

  • = (Number of green apples/Total apples)
  • = (4/17)^3
  • = 0.0130

Therefore 0.0130 is the required probability here.

b) Select 3 apples with replacement. Find the probability that none are red

Probability that none are red is computed here as:

  • = (Number of non red apples/Total apples)
  • = (9/17)^3
  • = 0.14838

Therefore 0.14838 is the required probability here

c) Select 4 apples with replacement. Find the probability that you get at least 2 red apples

  • Probability that we get at least 2 red apples when 4 apples are drawn is computed here as:
  • = 1 - (Probability that no red apple is taken out when 4 apples are taken out + Probability that 1 red apple is taken out when 4 apples are taken out)
  • = 1 - 8C0 x 9C4 + 8C1 x 9C3 / 17C4
  • = 1 - 0.3353
  • = 0.6647

Therefore 0.6647 is the required probability here

d) Select 2 apples with replacement. Find the probability that the second apple is yellow given that the first apple is red.

  • Given that the first apple is red, we are left with 16 apples out of which 5 are yellow. Therefore the required probability here is computed as:
  • = 5/16
  • = 0.3125

Therefore 0.3125 is the required probability here

3 0
3 years ago
Jeremy started with 5 candies in his bag and collected 50 candies in 2 hours. Answer should be in y=mx+b
kari74 [83]

y=25x+5 is the final equation.

8 0
4 years ago
Write an equation of a line that passes through (3, -1) and is perpendicular to y = 6x - 4. Show work.
Alex73 [517]

Answer:

y = -1/6x - 1/2

Step-by-step explanation:

y = -1/6x + b

-1 = -1/6(3) + b

-1 = -1/2 + b

-1/2 = b

7 0
3 years ago
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