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defon
3 years ago
11

HELPPPPPPP PLEASEEEEEEEEEEE

Mathematics
1 answer:
Inessa [10]3 years ago
8 0

Answer:

y=-1

Step-by-step explanation:

it is a straight line graph with no gradient therefore no X value. It crosses the y axis at -1

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The mean of 100 observation is found to be 40. If at the time of compution two items were wrongly taken as 30 and 27 instead of
Colt1911 [192]

Answer:

40.18

Step-by-step explanation:

According to this question, the mean of 100 observation is found to be 40. This means that the number of values in the set of data is 100. However, at the time of computation two items were wrongly taken as 30 and 27 instead of 3 and 72.

The mean is derived by dividing the sum of values in the data (Σx) by the number of observations (n) i.e.

Mean = Σx/n

For the computation error:

Mean = 40

Let x represent the sun of other 98 values except 30 and 27

n = 100

40 = x + 30 + 27/100

40 = 57 + x/100

Cross multiply

4000 = 57 + x

x = 4000 - 57

x = 3943.

Sum of other 98 values = 3943.

Now, let's find the correct mean with correct values of 3 and 72;

Mean = Σx/n

Mean = 3943 + 3 + 72/100

Mean = 4018/100

Mean = 40.18

7 0
3 years ago
Can you help me solve this? 5 stars to the best answer! <br><br> 3(x – 1) &lt; -3(2 – 2x)
IgorLugansk [536]
Any answer choices for the question???
6 0
3 years ago
Find the area of the circle. (nearest hundredth)
Stolb23 [73]

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5 0
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Read 2 more answers
What number completes this sentence12/18=x/30
BartSMP [9]
Cross multiplying:-
18*x = 12*30
x = 360 / 18

x = 20 answer
5 0
3 years ago
FOIL the following binomials. (6x+5)(1x+6)
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The trinomial that results from foiling the binomials is 6x^2+41x+30.
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