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STALIN [3.7K]
4 years ago
7

What is the value of x?

Mathematics
1 answer:
Galina-37 [17]4 years ago
3 0
Please combine these steps with the photograph provided below.

We know the longest side of the new right-angled triangle is 10, as it is simply the radius

We know one of the shorter sides would be 6 as line x cuts the chord, of length 12, in half

Therefore use Pythagoras Theorem to find X

So 10²= 6² + x²
X²= 10²-6²
X²=100-36= 64
X²=64
X= √64 = 8
X=8

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Write a real world problem that can be modeled by x-13>20.
BlackZzzverrR [31]

Alex and her friend were trying to find who had more pieces of candy. Her friend had 20. Alex had x but lost 13 of them. They found out that Alex had more.

So, x-13>20

7 0
4 years ago
Simplify. Your answer should contain only positive exponents.<br> 2*2^-3
jonny [76]
0.25 or 1/4 as 2^-3 is 1/8 so 2*1/8 = 2/8 = 1/4
5 0
3 years ago
How do I solve 2x-3y=-1. y=x-1
nlexa [21]
Hello!

You can put in y for the first equation

2x - 3(x - 1) = -1

Distribute the -3

2x - 3x + 3 = -1

Combine like terms

-x + 3 = -1

Subtract 3 from both sides

-x = -4

Since x is negative we can multiply both sides by -1 to make x positive

x = 4

We can put x into the second equation to get y

y = 4 - 1

y = 3

The answers are x = 4 and y = 3

Hope this helps!
7 0
4 years ago
Read 2 more answers
What is -5k+k simplified
ozzi

-4k is the answer

mark brainliest     :)

8 0
3 years ago
Read 2 more answers
Increase £200 by 25%<br><br> ill give u brainlist
egoroff_w [7]

Answer:

250

Step-by-step explanation:

First we need to find the 25% of £200

200 × 25 ÷ 100 = 50

200 + 50 = 250

4 0
3 years ago
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