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Otrada [13]
3 years ago
12

AYUDA POR FAVOR, ES URGENTE ​

Mathematics
1 answer:
Alika [10]3 years ago
6 0

Answer:

212

Step-by-step explanation:

13 * 17 = 221

221- 9 = 212

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If there are 32 boys and 16 girls in a room, fill out all of the possible ratios of boys to girls that could be made.
Flauer [41]

Answer:

1)   1:2

 

2)   2:4  

3)   4:8  

4)   8:16  

5)   16:32

4 0
2 years ago
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If possible help me in this. I need to find the two odd numbers...​
Lelechka [254]

Part (a)

Consecutive odd integers are integers that odd and they follow one right after another. If x is odd, then x+2 is the next odd integer

For example, if x = 7, then x+2 = 9 is right after.

<h3>Answer:  x+2</h3>

========================================================

Part (b)

The consecutive odd integers we're dealing with are x and x+2.

Their squares are x^2 and (x+2)^2, and these squares add to 394.

<h3>Answer: x^2 + (x+2)^2 = 394</h3>

========================================================

Part (c)

We'll solve the equation we just set up.

x^2 + (x+2)^2 = 394

x^2 + x^2 + 4x + 4 = 394

2x^2+4x+4-394 = 0

2x^2+4x-390 = 0

2(x^2 + 2x - 195) = 0

x^2 + 2x - 195 = 0

You could factor this, but the quadratic formula avoids trial and error.

Use a = 1, b = 2, c = -195 in the quadratic formula.

x = \frac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\x = \frac{-(2)\pm\sqrt{(2)^2-4(1)(-195)}}{2(1)}\\\\x = \frac{-2\pm\sqrt{784}}{2}\\\\x = \frac{-2\pm28}{2}\\\\x = \frac{-2+28}{2} \ \text{ or } \ x = \frac{-2-28}{2}\\\\x = \frac{26}{2} \ \text{ or } \ x = \frac{-30}{2}\\\\x = 13 \ \text{ or } \ x = -15\\\\

If x = 13, then x+2 = 13+2 = 15

Then note how x^2 + (x+2)^2 = 13^2 + 15^2 = 169 + 225 = 394

Or we could have x = -15 which leads to x+2 = -15+2 = -13

So, x^2 + (x+2)^2 = (-15)^2 + (-13)^2 = 225 + 169 = 394

We get the same thing either way.

<h3>Answer: Either 13, 15  or  -15, -13</h3>
4 0
3 years ago
<img src="https://tex.z-dn.net/?f=%5Cbold%7B%20Find%5C%3A%20the%20%5C%3Avalue%5C%3A%20of%5C%3A%20x%3A%7D" id="TexFormula1" title
Andrews [41]

Answer:

hope this helps you!!!

Step-by-step explanation:

MARK AS BRAINLIEST!!

8 0
2 years ago
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1: 2 2/3 - 3/5 <br> 2: 2 1/5 + 1 1/10<br> 3: 2 5/7 - 2/3<br> 4: 1/4 + w = 6 1/3
Yanka [14]

2 2/3 - 3/5 = 2 1/15

2 1/5 + 11/10 = 3 3/10

2 5/7 - 2/3 = 2 1/21

1/4 + w = 6 1/3

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Hope this helps :)

6 0
3 years ago
Write an expression for "the product of 5 and z."
Reil [10]
Expressions you could use: 5(z) or 5z
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3 years ago
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