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Firdavs [7]
3 years ago
10

AB is parallel to ED.

Mathematics
1 answer:
ivolga24 [154]3 years ago
4 0

Answer:

BE = 22.4 cm

Step-by-step explanation:

Δ CAB and Δ CDE are similar , then ratios of corresponding sides are equal, that is

\frac{CB}{CE} = \frac{AB}{DE} , substitute values

\frac{6.4}{CE} = \frac{8}{20} ( cross- multiply )

8 CE = 128 ( divide both sides by 8 )

CE = 16 cm

Then

BE = BC + CE = 6.4 + 16 = 22.4 cm

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1/8-(-5+3/4)=x+(-1/4)
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Answer:

x = 37 /8

Step-by-step explanation:

3 0
3 years ago
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A veterinarian divided 4/5 of a bottle of medicine equally among 4 sick cats. How much did she give each sick cat?
boyakko [2]
I think it’s 1/5 or 3 1/5
4 0
3 years ago
Mother wants to divide $36 between her daughters Ava and Charlotte in the ratio of their ages. If Ava is 15 years old and Charlo
Fantom [35]

Answer:

Ava's share = $20

Charlotte's share = $16

Step-by-step explanation:

15x + 12x = 36 : multiply each girl's age by same amount and adding gives $36

27x = 36 : add x terms

x = 36 / 27 : divide both sides of equation by 27

x = 4 / 3

Ava's share = 15x = 15 * 4/3 = 20

Charlotte's share = 12x = 12 * 4/3 = 16

8 0
3 years ago
a group of astronauts launched a model rocket from a platform. Its flight path is modeled by h= -4t^2+24t+13 where h is the heig
Eddi Din [679]

Answer:

6.5 seconds

Step-by-step explanation:

Keep in mind that when h=0, this is the same height for both when the model rocket takes off and lands, so when the rocket lands, time is positive. Thus:

h=-4t^2+24t+13\\\\0=-4t^2+24t+13\\\\t=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\\ \\t=\frac{-24\pm\sqrt{24^2-4(-4)(13)}}{2(-4)}\\ \\t=\frac{-24\pm\sqrt{576+208}}{-8}\\\\t=\frac{-24\pm\sqrt{576+208}}{-8}\\\\t=\frac{-24\pm\sqrt{784}}{-8}\\\\t=\frac{-24\pm28}{-8}\\\\t=\frac{-24-28}{-8}\\ \\t=\frac{-52}{-8}\\ \\t=\frac{52}{8}\\\\t=6.5

So, the amount of seconds that the model rocket stayed above the ground since it left the platform is 6.5 seconds

5 0
2 years ago
Read 2 more answers
Please explain 22 and 23
ICE Princess25 [194]

Hey there!

  1. \bold{Mean\rightarrow your \ average}
  2. \bold{The\ word \ 'average' \ means \rightarrow} \bold{is \ where \ you \ add \ up \ your \ particular \ numbers \ \& you}\bold{divde \ your \ result \ by \ the \  number!}

\bold{22.\downarrow}

  • If we're rounding the answer then: \boxed{\bold{answer:90}} \checkmark

\bold{23.\downarrow}

  • Another name for the word is "range" so, \boxed{\bold{answer:11}} \checkmark

Good luck on your assignment and enjoy your day!

~\frak{LoveYourselfFirst:)}

5 0
3 years ago
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