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Goshia [24]
3 years ago
5

Robert is 40 years older than Brittany. the sum of their ages is 82. find their ages.

Mathematics
2 answers:
olga nikolaevna [1]3 years ago
7 0

Answer:

I don't understand...

astraxan [27]3 years ago
6 0

Answer:

brittany is 42

Step-by-step explanation:

if he is 40 years older than her and the sum of there ages is 82

82-40 = 42

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The answer is A I just need help working it out
nordsb [41]
STU + STR = 180
8x + STR = 180 [ STU = 8x ]
STR = 180 - 8x

STR = SRT [ RS ≈ ST ]

Now, In ΔSRT,
we have, RST = 7x - 54, STR = SRT = 180-8x
Their sum is 180, as it constitutes a triangle.

7x-54 + 2(180-8x) = 180
7x - 54 + 360 - 16x = 180
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x = 126/9
x = 14

So, option A is your answer.

Hope this helps!

5 0
3 years ago
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If (x^2+1)/x = 7 find x^2+(1/x^2)
White raven [17]

Answer:

x²+(1/x²) = 47

Step-by-step explanation:

by identity : (a+b)² = a²+b²+2ab

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put the value for : x +(1/x) in (1) :

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A real-estate agent conducted an experiment to test the effect of selling a staged home vs. selling an empty home. To do so, the
Genrish500 [490]

The statement "Yes, all the conditions for Inference have been met" is correct.

<h3>What is a t-test?</h3>

A t-test is a hypothesis-testing technique for analyzing the means of one or two populations. A t-test can be used to see if a single group differs from a known value, if two groups differ from each other (an independent two-sample t-test), or if paired measurements show a significant difference.

We have:

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As it is mentioned that the samples are drawn randomly and mentioned that no skewness is observed, this Indicates that the distribution is approximately normal

The total number of readings = 10

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Thus, the statement "Yes, all the conditions for Inference have been met" is correct.

Learn more about the t-test here:

brainly.com/question/15870238

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2 years ago
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klasskru [66]
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3 years ago
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Someone please help me and show your work :)
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Answer:

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