1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
jeka57 [31]
2 years ago
9

I need help on this

Mathematics
2 answers:
Lena [83]2 years ago
3 0

Answer:

X=3.5

Step-by-step explanation:

AD = 4+3 = 7
ED = X
that is the ADE triangle


AB= 4
CB = 2
this is the ABC triangle
because the A angle shares the same triangles
ED /CB = AD/ AB
X/2 = 7/4
by multiplying all of the equation by 2 to get rid of the 2 under the x

X= 7/2 which is 3.5
so X= 3.5

MArishka [77]2 years ago
3 0

Step-by-step explanation:

ABC and ADE are similar triangles.

that means they have the same angles, and all side lengths of one triangle correlate to the side lengths of the corresponding sides in the other triangle with the same factor.

so, know the factor of one pair of corresponding sides, you know the factor for the other sides too.

therefore, ED (x) relates to BC (2) with the same factor, as AD (4+3) to AB (4).

x/2 = (4+3)/4 = 7/4

x = 2×7/4 = 7/2

You might be interested in
Which value of the x is in the solution set of the following inequality -x+8>6
vfiekz [6]
The answer would be 1
7 0
3 years ago
Factors of 12 plz tell me now but I know yeet man
rewona [7]
1x12 2x6 3x4 those are all the factors of 12
6 0
3 years ago
Read 2 more answers
Find four consecutive integers whose sum is 114.
Nezavi [6.7K]

If n is the first of these integers, then the other three are n + 1, n + 2, and n + 3. Then

n + (n + 1) + (n + 2) + (n + 3) = 114

4n + 6 = 114

4n = 108

n = 27

So the four numbers are 27, 28, 29, and 30.

6 0
3 years ago
You collect a random sample of size n from a population and calculate a 90% confidence interval. Which of the following strategi
Daniel [21]

Answer:

Decrease the sample size.

Step-by-step explanation:

Margin of error is:

ME = CV × √(σ / n)

where σ is the population standard deviation, or:

ME = CV × √(p (1 − p) / n)

where p is the proportion.

In each case, the margin of error is directly proportional to the critical value, and inversely proportional to √n.

Lowering the confidence level will lower the critical value, which will decrease the margin of error.  Decreasing the sample size will increase the margin of error.

6 0
3 years ago
Read 2 more answers
serena gets off the bus at new bridge from there she walk for 15 minutes to the grocary store .she shops for 23 minutes what tim
laiz [17]

you would have to know what time she got off the bus

6 0
3 years ago
Other questions:
  • Round 521,742 to the nearest thousand.
    6·2 answers
  • Which expression is equivalent to 16a + 24b ?
    11·2 answers
  • What expression represents a factorization of 28a + 40ab
    15·1 answer
  • What is 36 divided by 1/4 <br> PLS AWNSER ASAP
    9·2 answers
  • If you want to buy an item in a store that costs $9.50 and is on sale for 25% off, then how much would the item actually cost yo
    10·2 answers
  • Mrs. Hartill drove 3.1 miles to the grocery store, then 4.25 miles to the salon, and 10.8 miles to her sons house. How many mile
    10·2 answers
  • Ебать, сука, киска, задница, член, мотыга lol not me being able to cuss in russian here
    9·1 answer
  • Simply the following expression: 8x + 5y - 4z + 9y - 3x + 13z
    11·1 answer
  • Helpppppppppppppppppppp
    12·1 answer
  • Florida has a population of about 2 X 10'. The Earth has a population of about 8 X 109. About how many times more populated is t
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!