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serious [3.7K]
3 years ago
6

PLEASE HELP ME ASAPPPP

Mathematics
1 answer:
frutty [35]3 years ago
7 0

Answer:

The answer is

90 degrees the first one is I don't know about the rest sorry

Step-by-step explanation:

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Factorise x^2+6x-7 ?? Help please
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x^2+6x-7=\\
x^2-x+7x-7=\\
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(x+7)(x-1)
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3 0
3 years ago
the length of a rectangle is 4 inches greater than the width. The perimeter of the rectangle is 24 inches what are the dimension
deff fn [24]
Perimeter P=2L+2W
P=24
L=w+4
P=2(w+4)+2w
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6 0
3 years ago
A researcher wanted to determine if there was a relationship between new home sales (X) and appliance sales (Y) so data were gat
SashulF [63]

Answer:

The answer is "choice E"

Step-by-step explanation:

Please find the complete question in the attached file.

In this question, the choice E is correct because follows the following series:

n=12\\\\\Sigma x=33831 \\\\\Sigma x^2 = 101652609\\\\\Sigma y = 5396\\\\\Sigma y^2 = 2588426\\\\\Sigma xy= 15992663.000\\\\SSx= \frac{\Sigma x^2-( \Sigma x)^2}{n}= 6274562.2500\\\\SSy= \frac{\Sigma y^2-(\Sigma y)^2}{n}= 162024.6667\\\\SP= \frac{\Sigma xy-( \Sigma x \ \Sigma  y)}{n}= 779990.0000

3 0
3 years ago
1. Which expression shows 3 less than X?<br> А 3-х<br> cx - 3<br> в 3х
vova2212 [387]
X-3 is the expression that shows it
7 0
4 years ago
Read 2 more answers
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