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tekilochka [14]
3 years ago
9

Find two numbers, if Their sum is 3/5 and their difference is 7 1/5

Mathematics
2 answers:
3241004551 [841]3 years ago
8 0
Let the numbers be represented by x and y.
.. x + y = 0.6
.. x - y = 7.2
Add these equations to get
.. 2x = 7.8
.. x = 3.9
Then you can find y from
.. y = 0.6 -3.9 = -3.3

The two numbers are -3.3 and 3.9.
FinnZ [79.3K]3 years ago
6 0

Answer:

3.9 and -3.3

Step-by-step explanation:

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Answer:

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7.2 is your radius so:

7.2^2 = 51.84 the reason why you square your radius is because thats apart of the formula when finding the are of a circle.

lets continue:

51.84 x 3.14(pi) = 162.7776

Now we need to find the area of the round surface but first we need to find the circumference of one circle and multiply it by the height.

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Now lets add both areas:

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3 years ago
Nine more than a number is eleven
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Answer:

Step-by-step explanation:

nine more then a number is eleven

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3 years ago
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Step-by-step explanation:

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3 years ago
Please hurry this is timed and I only have 20 mins left!!!
Nadusha1986 [10]

Answer:

x = 6 2/3     The supplementary pair of angle is 78 degree and z = 112degree  = 180 degree  First step is where we can also see z its opposite angle is vertical opposite angle to 112 degree given and label as vertical angle - where we see a line through the 180 degree line at any angle we can call the pair supplementary-   Pairs OR sets of angles an only be called consecutive when they are grouped with a set of parallel line across a straight line and it is only because they add up to 180 they could be either terms so as there isn't parallel shown ; <u>we know we an call a pair of angles upon a straight line supplementary.angles. </u>

Step-by-step explanation:

6 x +38 (+112) = 180 degree as angles on a straight line add up to 180   6 x +38 (+112) = 180    6 x +140 = 180  6 x + 140- 140 = 180-140      6 x  = 40   x = 40/6  x = 6.66666667    x = 6 2/3  <u> </u><u>Proof  (6( 6 2/3)) + 38 + 112 = 180</u>     = (40+38)+112 = 180 = 78 +112 = 180   Proves the supplementary angle is 78 degree.

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aliya0001 [1]
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