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Vladimir [108]
4 years ago
8

BC is parallel to DE.

Mathematics
1 answer:
VARVARA [1.3K]4 years ago
4 0

Answer:

x= 2.5

Step-by-step explanation:

We can use ratios to solve

AB          AD

------- = ----------

AC          AE

X          5

------- = ----------

x+1         7

Using cross products

7x = 5(x+1)

Distribute

7x = 5x+5

subtract 5x

7x-5x = 5x-5x+5

2x= 5

Divide by 2

2x/2 = 5/2

x = 2.5

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What is the digit to the right of the decimal point in the decimal form of 4/37<br> ?
a_sh-v [17]

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2/15

Step-by-step explanation:

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Find the area of the circle. Round your answer to the nearest hundredth. 15in
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Which value makes the inequality r &gt; 2.5 TRUE?
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A 0 will make the right decision
3 0
3 years ago
numerele a, b si c sunt direct proportionale cu 2, 3 si 5. Daca media aritmetica a celor trei numere este egala cu 100, determin
Fynjy0 [20]

Answer:

a = 60

b = 90

c = 150

Step-by-step explanation:

Numerele a, b și c sunt direct proporționale cu 2, 3 și 5.

Unde k este constantă de proporționalitate

a ∝ 2

a = 2k

b ∝ 3

b = 3k

c ∝ 5

c = 5k

Dacă media aritmetică a celor trei numere este egală cu 100, determinați numerele a, b și c

= 2k + 3k + 5k / 3 = 100

= 10k / 3 = 100

Cross Multiply

= 10k = 3 × 100

= 10k = 300

Împărțiți ambele părți la 10

k = 300/10

k = 30

Pentru numărul a

a = 2k

a = 2 × 30

a = 60

Pentru numărul b

b = 3k

b = 3 × 30

b = 90

Pentru numărul c

c = 5k

c = 5 × 30

c = 150

Prin urmare, a = 60, b = 90, c = 150

3 0
4 years ago
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