2 years ago

What is the height, x, of the equilateral triangle shown?

Mathematics

1 answer:

lbvjy [14]2 years ago

5 0

Answer:

I think it's either 10√3 or 10

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hey the question is, " The length of a rectangle is twice its width. The perimeter of the rectangle is 126 feet."

Tema [17]

Answer:

42 = l

21 = w

Step-by-step explanation:

{l = 2w

{126 = 2w + 2l

126 = 2w + 2[2w]

126 = 2w + 4w

126 = 6w

21 = w [Plug this back into both equations to get the length of 42]; 42 = l

I am joyous to assist you anytime.

4 0

3 years ago

Solve using square roots 3x^2+25=73

seropon [69]

Heya !

Given expression -

$3 {x}^{2} + 25 = 73$

Subtracting 25 both sides ,

$3 {x}^{2} + 25 - 25 = 73 - 25 \\ \\ 3 {x}^{2} = 48$

Dividing by 3 on both sides ,

$\frac{3 {x}^{2} }{3} = \frac{48}{3} \\ \\ {x}^{2} = 16$

Therefore ,
$x = + \: 4 \: \: \: \: or \: \: - 4 \: \: \: \: \: \: \: Ans.$

4 0

3 years ago

Help please! I need the answers for the two fill-in-the-blanks.

ryzh [129]

Answer:

The first column is transformation

The second one I have forgotten

Need other help

3 0

3 years ago

4.5+n is it rational or irrational

nirvana33 [79]

Answer:

4.5 is a rational number, as it can be represented as 9/2. Many important numbers in mathematics, however, are irrational, and cannot be written as ratios.

5 0

2 years ago

What is the conjugate of the product (2 - i)(1+2i)?

ivann1987 [24]

Answer:

4-3i is the answer.......

Explanation

Product

(2-i)(1+2i) = 2+4i-i-2i²

= 2+4i-i+2

= 4+3i

conjugate of 4+3i is 4-3i

8 0

3 years ago