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Romashka [77]
3 years ago
10

By what theorem or postulate can you determine the value of x?

Mathematics
1 answer:
Yakvenalex [24]3 years ago
5 0

Answer:

Triangle Proportionality Theorem.

Step-by-step explanation:

See the attached diagram.

Two lines EG and FH are parallel and hence, EG will divide the sides DF and DH in the same ratio as per Triangle Proportionality Theorem.

So, we can write \frac{DE}{EF} = \frac{DG}{GH}

⇒ \frac{3}{4.1} = \frac{2.3}{x}

⇒ x = 3.14 cm. (Answer)

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Write 2.3181818 as a mixed number
Marina CMI [18]
We convert 2.3181818 to fraction as follows:

Let x = 2.3181818 . . . . . (1)

as can be seen, the repeating digits are 18

Multiply both sides of equation (1) by 1,000 to get
1,000x = 2318.1818 . . . . . (2)

Also, multiply both sides of equation (1) by 10 to get
10x = 23.181818 . . . . . (3)

Subtract equation (3) from equation (2) to get
990x = 2,295

Thus,
x= \frac{2,295}{990} =2 \frac{7}{22}
5 0
3 years ago
Take -4+3a2 from 7a - a2 . ?? Pls help !!
Burka [1]

Answer:

There you go mate!

Step-by-step explanation:

Tell me if it's unclear!

3 0
3 years ago
Read 2 more answers
Plz help ASAP you will get 10 points if you answer this correctly. It is Saying to fix joe’s calculations.
zimovet [89]

Answer:

Ok how can I help

Step-by-step explanation:

3 0
4 years ago
Determine square of -p+6
ValentinkaMS [17]

Answer:

-12p+p^2+36

Step by step explanation:

(-p+6)^2 is the square of -p+6

we use the formula

(a+b)^2=2ab+a^2+b^2

(-p+6)^2=-12p+p^2+36

the minus of p disappears

5 0
3 years ago
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How do you simplify 3/4 + 7/10?
Makovka662 [10]
Answer : 1 9/20

1st Step : Make common denominators

3/4 + 7/10 = 15/20 + 14/20

2nd Step : Add!

15/20 + 14/20 = 29/20

3rd Step : Simplify, make the fraction a mixed number

29/20 = 1  9/20

1 and 9/20 is your answer
4 0
3 years ago
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