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horrorfan [7]
4 years ago
15

I need help with this question please

Mathematics
2 answers:
kozerog [31]4 years ago
7 0
Well, I know that (a+b)-(a-b)2 equals to 784 but I don't know what to do with 1/2.
irinina [24]4 years ago
4 0
The answer is 0
Let me tell you why
first plug in the numbers
.5(18+14)-(18-14)^2
(9+7)-(4)^2
16-16
0
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3 years ago
What is this answer
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Step-by-step explanation:

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3 years ago
How do I solve this using substitution? Please write down the steps too.<br> 6x+5y=-16<br> y=7x+5
nika2105 [10]

Answer: x = -1 and y = -2

Step-by-step explanation:

You are given two expressions that have a relationship. There are two ways to solve this problem, but I will be going over the easy way. I'm assuming you know how to solve for one variable such as x? Well we can put the y varaible from the first equation in terms of x, from the second equation. Ill show you what I mean:

6x + 5(7x + 5) = -16

I replaced y in the first one in terms of x, so that we can solve just for x.

6x + 35x + 25 = -16

41x +25 = -16

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Now simply find y by plugging the now known x value into either equation

y = 7(-1) + 5

y = -2

8 0
3 years ago
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jeka94
The dog is able to run around in a circle with a radius of9 ft.

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Write the decimal that the point on the number line shows;
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