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3 years ago

In triangles △ABC and △DEF,

Mathematics

1 answer:

wel3 years ago

7 0

Answer:

BC = 4.8
ED = 1.1
DF = 1.6

Step-by-step explanation:

Since angles A and E correspond, as well as angles C and F, we can say ...

ΔABC ~ ΔEDF

Then the ratio of side lengths of ΔABC to those of ΔEDF is ...

AC/EF = 6/2 = 3

That means ...

ED/AB = 1/3

ED = AB·(1/3) = 3.3·(1/3) = 1.1

For the remaining sides, we have the relation

3·DF = BC

3·(BC -3.2) = BC

2BC - 9.6 = 0 . . . eliminate parentheses, subtract length BC

BC -4.8 = 0 . . . . . divide by 2

BC = 4.8 . . . . . . . . add 4.8

DF = BC·(1/3) = 1.6

The unknown side lengths are BC = 4.8, DE = 1.1, DF = 1.6.

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Daniel and Hector both throw shot put for their school's track and field team.

tatyana61 [14]

Answer:

Option B : Hector by 3 feet is the correct answer.

Step-by-step explanation:

Given that:

Mean of Daniel = $\frac{Sum\ of\ quantities}{Number\ of\ quantities}$

Mean of Daniel = $\frac{27+30+34+35+34}{5} = \frac{160}{5}$

Mean of Daniel = 32 feet

Mean of Hector = $\frac{38+24+38+40+35}{5} = \frac{175}{5}$

Mean of Hector = 35 feet

Therefore,

Hector has a greater mean

Difference = Hector's Mean - Daniel's Mean

Difference = 35 - 32

Difference = 3 feet

Hence,

Option B : Hector by 3 feet is the correct answer.

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3 years ago

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krek1111 [17]

Answer:

3 2/5

Step-by-step explanation:

17/5

How many times does 5 go into 15

5*3 =15 3 times

17-15 =2 so there is 2 left over. This goes over the denominator

3 2/5

5 0

3 years ago

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On Saturday Stella worked for two hours helping her mother in the house. she spent 1/3 of her time doing laundry, 1/4 of a time

raketka [301]

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which is one hour and 25 minutes.

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3 years ago

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const2013 [10]

Answer:

wait im a little confused sorry but im going to try my best

Step-by-step explanation:

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3 years ago

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melamori03 [73]

A) Garage A = 3x
Garage B = 2x + 2
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3 years ago

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