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trapecia [35]
3 years ago
14

Please help with this question!

Mathematics
1 answer:
lukranit [14]3 years ago
7 0

Answer:

a. x = 5, AB = 14, BC = 8

Step-by-step explanation:

✔️Both triangles are similar, therefore their side lengths are proportional to each other.

Thus:

\frac{2x + 4}{x + 3} = \frac{7}{4}

Cross multiply

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

8x + 16= 7x + 21

Collect like terms

8x - 7x = -16 + 21

x = 5

✔️AB = 2x + 4

Plug in the value of x

AB = 2(5) + 4

AB = 14

✔️BC = x + 3

Plug in the value of x

BC = 5 + 3

BC = 8

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Choose ONE of the equations to solve. SHOW DETAILED WORK & give the answer.
Elis [28]

Answer:

x=3

Step-by-step explanation:

9x+5+2x = 38

Combine like terms

9x+2x   +5 = 38

11x+5 = 38

Subtract 5 from each side

11x+5-5 = 38-5

11x = 33

Divide each side by 11

11x/11 = 33/11

x = 3

6 0
3 years ago
Read 2 more answers
An investment company pays 8​% compounded semiannually. You want to have $12,000 in the future. (A) How much should you deposit
Leno4ka [110]
Before we start answering the question, let's define the compound interest formula:
A = P(1+ \frac{r}{n}) ^{nt}
Where:
<span>'A'</span>  is the amount of money in dollars
'P' is the principal amount of money in dollars
'r' is the interest rate (decimal)
'n' is the number of times interest is compounded per year
't' is the time in years

<span>(A) Find Principal Amount
</span><u /><span><u>Given:</u>
</span>A = 12,000
P = ?
r = 0.08
n = 2 (semiannually)
t = 5
Now we plug our values in and solve:
12,000 = P(1+ \frac{0.08}{2}) ^{(2)(5)}
12,000 = P(1.04) ^{10}
P = 8106.77
∴ You would have to deposit $8106.77 in order to have $12,000 in 5 years from now.

(B) Find Principal Amount
Same given values as above, with the exception of 't' which is now 10 instead of 5. 
12,000 = P(1+ \frac{0.08}{2}) ^{(2)(10)}
12,000 = P(1.04) ^{20}
P = 5476.64
∴ You would have to deposit $5476.64 in order to have $12,000 in 10 years from now.

Hope this helps!
4 0
4 years ago
What is 4 2/3 + 2 1/5 + 3 1/2
Elena L [17]

Answer:

10\frac{11}{30}

Step-by-step explanation:

Convert the mixed fractions into improper fractions.

14/3+11/5+7/2

Add the values.

311/30

10\frac{11}{30}

=10.36666666667

6 0
4 years ago
Simplify the next two expressions
prisoha [69]
1. 7x-40
2. 8x-30y-10
4 0
4 years ago
Will give brainlest How many solutions does the system have? y=4x−8 4y=4x−8 Choose 1 answer: A. No Solution B. Infinite solution
34kurt

Answer:Try A.

Although it could be another answer. Comment on this if its wrong I can help you.

5 0
4 years ago
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