The square abcd has side length 10cm. E is the midpoint of BC. Work out the length of DE. Answer to 1 decimal place.

Answers

Answer 1

Answer:
-- DEC is a right triangle.

-- DC is one side of the square = 10 cm
-- EC is half the side of the square = 5 cm
-- DE is the hypotenuse = square root of (5² + 10²) = √(125 cm²) .

-- Truncated to one decimal place, that's 11.1 cm.

-- Rounded to one decimal place, it's 11.2 cm.

Answer 2

Answer: Think of it as a triangle. E is the midpoint of BC, so EC is 5cm. Then CD is 10cm. Pythagoras it, so 5^2 + 10^2 = DE^2. Rt(125) = 11.2 to 1 decimal place. That's the answer

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i believe the answer is C!

Pat has a 10-centimeter length of string she is going to use to measure a small square table. The side length she measures is 5 strings. What are the dimensions of the table? A) what is the area of the table?

B) is that as large as a square meter? Explain

Answers

5 strings means 5 times the lenth of the string, or 5*10cm which is 50 cm.

So the area of the table (which is square) is 50*50=2500cm². or 0.25m²

It's not a full square meter which would be 1 meter by 1 meter or 100cm*100cm=10000cm²

Could you answer all the ones

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Which of these numbers is in the solution set of x – 15 = 5? A. 10 B. 3 C. 20 D. –10

Answers

Answer:

C. 20

Step-by-step explanation:

Your main goal is to isolate X to find your answer. To do that, bring the -15 to the other side. Then it would be x =20

Answer:

Step-by-step explanation:

15 x 3 is 15

What is 15 (x+20)Please help me in any way you can
and I hope you have the answer for this question

Answers

When you see a number outside the parentheses like that,
it means that the number operates on everything inside.
So
15 times (x+20) means (15 times 'x') + (15 times 20) .

15 times x = 15x
15 times 20 = 300

So
15(x + 20) = 15x + 300

What is the constant of proportionality for the relationship shown in this table?

Answers

Hi!

y = kx

k = y/x

In this case:

k = 4/8 = 3/6 = 2/4 = 1/2

The answer is A. 1/2

Hope this helps!

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