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Virty [35]
3 years ago
7

ΔABC is similar to ΔDEF. The length of segment AC is 12 cm. The length of segment BC is 18 cm. The length of segment DF is 10 cm

.
What is the length of segment EF?
Question 1 options:


15


14


10


9
Mathematics
2 answers:
Vsevolod [243]3 years ago
8 0

Answer:

The answer is 15

Step-by-step explanation:

avanturin [10]3 years ago
6 0

since similar, then

EF/BC = DF/AC

EF = BC•DF/AC

= 18•10/12

= 15

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Completing the sqaure <br> x^2+14x+34
DiKsa [7]

Answer:

-7-√15

Step-by-step explanation:

First move the constant to the right hand side and change it's sign

x^2+14x=-34

Then add (14/2)^2 or 7^2 to both sides

x^2+14x+49=-34+49

Then factor the expression

(x+7)^2=-34+49

Then solve (x+7)^2=15

You should get:

x=-√15-7

or

x=√15-7

7 0
3 years ago
Could anyone help please i am very bad at math :( <br> what is 3/5 of 50
artcher [175]
<span><span>3/5(50)
=(3/5)(50/1)
=(3)(50)/(5)(1)
=150/5
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8 0
3 years ago
You have inherited a large collection of audio compact discs and decide to purchase a HiFi system to play them. At the retailer
leva [86]

Answer:

24

Step-by-step explanation:

Since at the retailer you find a choice of 4 CD players, 2 amplifiers and 3 sets of speakers. We have 4 different ways of selecting the CD players, we also have 2 different ways of selecting the amplifiers and 3 different ways of selecting the 3 sets of speakers.

So, the total number of different HiFi systems are available to purchase from this retailer is 4 × 3 × 2 = 24 .

So we have 24 different HiFi systems are available to purchase from this retailer

3 0
3 years ago
Describe the dimensions of two different prisms that each have a volume is 2,400 cubic centimeters
Phantasy [73]
One prism with a volume of 2400 might have a rectangular base with a length of 4 and a width of 5, as well as a height of 120. 

V = l x w x h
V = 4  x 5 x 120
V = 2400

This prism would essentially look like a really tall rectangle, since the height is such a large number. I wouldn't accurately represent the units on graph paper, if I were you. Just label the sides with the numbers I gave you.

Another prism with a volume of 2400 might be a rectangular prism with a length of 8, a width of 10, and a height of 30. 

V = l x w x h
V= 8 x 10 x 30
V = 2400

This would also be a tall rectangle, although it isn't as tall. Keep in mind that l x w x h is only the volume formula for a rectangular prism. I only used rectangular prisms because they would be the easiest for this example. A triangular prism has a different volume formula.
3 0
3 years ago
Yesterday, Grace drove 2 1/8 miles. she used 1 1/4
prisoha [69]

Answer:

7/8

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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