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galina1969 [7]
3 years ago
10

PLEASE HELP ME

Mathematics
1 answer:
stiv31 [10]3 years ago
5 0
Since it's a right triangle you can use the Pythagorean theorem or Trig (Soh Cah Toa).

I'll just use the Pythagorean theorem : a² + b² = c²
a = 9
b = x
c = 18

9² + x² = 18²
81 + x² = 324
x² = 324 - 81
x² = 243
x = √(243)

factor 243 to find a perfect square

x = √(3*81)
x = 9√(3)<u />
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3 0
3 years ago
One number is one more than another. Their sum is nine. Find both numbers.
STatiana [176]

Answer:

4 and 5

Step-by-step explanation:

Let's make an equation to solve. Let's call "one number" x. Another number is 1 more than x, so now we have x + 1. x plus x + 1 is equal to 9... and this gives us our equation:

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5 0
3 years ago
Someone help me with that <br><br> Thank you
ehidna [41]
1. 23,763 + 20 = 23,783

2. 23,763 + 200 = 23,963

3. 75,379 - 5 = 75,374

4. 476,932 - 1,000 = 475,932

Greater than = Add
Less than = Subtract

Comment if you need any help.
6 0
2 years ago
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