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Zepler [3.9K]
2 years ago
12

What is4/15 as a ratio​

Mathematics
1 answer:
larisa86 [58]2 years ago
6 0

4:15

..............

4/15 = 4:15

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Two-step equation<br> 2x+5x=-1<br> What's the answer for x=
xxTIMURxx [149]
-1 / 7 = x

You need to combine the 2x and 5x then devise the 7x from -1
5 0
3 years ago
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Prove that the sum of the squares of any two odd numbers is always even
ValentinkaMS [17]

Answer:

proof below

Step-by-step explanation:

Remember that a number is even if it is expressed so n = 2k. It is odd if it is in the form 2k + 1 (k is just an integer)

Let's say we have to odd numbers, 2a + 1, and 2b + 1. We are after the sum of their squares, so we have (2a + 1)^2 + (2b + 1)^2. Now let's expand this;

(2a + 1)^2 + (2b + 1)^2 = 4a^2 + 4a + 4b + 4b^2 + 4b + 2

= 2(2a^2 + 2a + 2b^2 + 2b + 1)

Now the sum in the parenthesis, 2a^2 + 2a + 2b^2 + 2b + 1, is just another integer, which we can pose as k. Remember that 2 times any random integer, either odd or even, is always even. Therefore the sum of the squares of any two odd numbers is always even.

6 0
3 years ago
What the answer to this
sdas [7]
Divide both the numerator and denominator by the gcf, which is 3.

3/3=1
6/3=2

Final answer: 1/2
6 0
3 years ago
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Cheyenne drove 3000miles in 75 hours.at this rate, how long will it take her to drive 4000 miles
Liono4ka [1.6K]
75/3000=x/4000
times both sides by 1000
75/3=x/4
times both sides by 4
300/3=x
100=x

answer is 100 hours
7 0
3 years ago
Find m&lt;1. Please help quick!
GenaCL600 [577]

Answer:

17°

Step-by-step explanation:

Look everything you have above the horizontal line.

It's a 73° angle, plus the one you need, plus 90°. They add up to 180.

m+73+90=180, or m=17.

6 0
3 years ago
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