Answer: x=38
Step-by-step explanation:
x+(-15)=23
x-15=23
+15 +15
x=38
When there is a positive and negative sign the negative sign cancels the positive sign.
Answer:
38
Step-by-step explanation:
23+15=38 because in order to get 23 from -15 a negative number you need to have 38 to silence the -15.
5x - 7y=40
O (1.-5)
O (1,5)
0 (-1,-5)
0 (-1,5)
Answer:
x=1 ,y=-5
Step-by-step explanation:
3x + 10y = 47
5x - 7y = 40
____________
21x + 70y = 329. equ 1
50x - 70y = 400. equ 2
subtract equ 1 from 2
=71x = 71
divide both sides by the 71
71/71 = 71/71
x = 1
_________
to find y
substitute x into either equ 1 or equ 2
am using equ 2
5x - 7y = 40
5(1) - 7y = 40
5 - 7y = 40
7y = 5 - 40
7y = -35
divide both sides by the coffecient of y
7y/7 = -35/7
y = - 5
Answer:
169 cm
Step-by-step explanation:
Mean is the average of a group of numbers. You calculate it by adding all your numbers and dividing by how many numbers you have. In this question you would solve with these steps...
Add all of your numbers
165 + 175 + 176 + 159 + 170 = 845
Divide your solution by the number of numbers you have
845 / 5 = 169
The mean of the heights of the five students is 169cm.
Hope this Helps! :)
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-SGO
Using the probability concept, it is found that there is a 0.7273 = 72.73% probability that the fruit is an APPLE or has an EVEN number.
A probability is the number of desired outcomes divided by the number of total outcomes.
In this problem:
Then, the probability is:
0.7273 = 72.73% probability that the fruit is an APPLE or has an EVEN number.
A similar problem involving the probability concept is given at brainly.com/question/15536019
Answer:
8 in 11 or 0.7272
Step-by-step explanation:
Between 6 apples. 2 lemons and 3 melons, Will has a total of 11 fruits in his garden. There are three apples labeled with even numbers (2,4 and 6), one melon (2) and one lemon (2), for a total of five fruits.
The probability that a randomly selected fruit is an APPLE or has an EVEN number is given by the probability that it is an apple, P(A), added to the probability that it is even, P(E), minus the probability that it is an even apple, P(A and E):
There is a 8 in 11, or a 0.7272 chance that the fruit is an APPLE or has an EVEN number.
Answer: D)not justifiable, because ice cream sales and shark attacks both rise during the summer.
Step-by-step explanation:
Correlation: It indicates that there is relation between any two variablesor more than two variable.
Causation: It is a type of correlation where one variable if affects other variable directly.
Thus , Causation implies correlation.
But correlation does not imply causation.
Therefore, if there is a positive correlation between ice cream sales and shark attacks , then we can not say there is a causation as both are not linked directly.
Hence, the statement is not justifiable, because Ice cream sales and shark attacks both rise during the summer and both are not interlinked.
Answer:
3.8
Step-by-step explanation:
Rounding to the nearest tenth means that eliminating the digits in the hundredths and thousandths place and if the hundredths place is greater than 5, then you also have to add a 1 to the tenths place.
So, The number becomes:
=> 3.8 (Hundredths place have 6 which is greater than 5)
Answer:
3.8
Step-by-step explanation:
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