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AleksAgata [21]
4 years ago
14

The difference between a number and 12 is 20 Write an equation

Mathematics
1 answer:
Scorpion4ik [409]4 years ago
7 0
Assume that this number is n.
Difference between two number means the subtraction between them.
Therefore, "<span>The difference between a number and 12 is 20" means that when subtracting these two numbers, the result is 20.

Since the question did not mention which number is greater, therefore, we have two ways to write the equation. 
These two ways are as follows:
x - 12 = 20, and
12 - x = 20

</span>
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A sample of 36 observations is selected from a normal population. The sample mean is 12, and the population standard deviation i
velikii [3]

Answer: One tail test.

Step-by-step explanation:

Given : A sample of 36 observations is selected from a normal population. The sample mean is 12, and the population standard deviation is 3.

Also, The set of hypothesis to conduct a test :-

H_0:\mu\leq10\\\\H_1:\mu>10

The kind of test need to perform is dependent upon the alternative hypothesis.

Since, the alternative hypothesis is one tailed (right-tailed), so the test is one tail test.

5 0
4 years ago
How would I solve n/5-3n/10=1/5<br><br>pls help me I am literally failing math.
otez555 [7]

Answer:

53/5

Step-by-step explanation:

since 10 is the denominator of the denominator we can move it to the numerator, giving us 10n/5-3n = 1/5

multiply all sides by 5-3n, giving us 10n = (5-3n)/5

now multiply by 5 to get rid of the final denomintor, 50n = 5-3n

move 3n to the other side 53n = 5, n = 53/5

8 0
3 years ago
Consider the sequence: -7, -2, 3, 8…. What is f(7)?
wlad13 [49]
You are adding by 5 in the sequence.
If f(1) is -7
f(2) = -2
f(3)= 3
f(4)=8
f(5)=13
f(6)=18
Therefore, f(7)=23
5 0
2 years ago
Please help i am helping somebody and i think i know the answer but i dont want it to be wrong so please help here it is
Mumz [18]

Answer:

244

Step-by-step explanation:

6 0
3 years ago
John needs to cut three strips of wood, 25.5 cm, 15.3 cm, and 9.25 cm long. He has a strip that is 72 cm long. How long will the
NeX [460]

Add the three strips of cut wood together:

25.5 + 15.3 = 40.8

40.8 + 9.25 = 49 + 1.05 = 50.05

John will need to cut a total of 50.05cm of wood.

Subtract this total from the strip John has:

72 - 50.05 = 22 - .05 = \boxed{21.95}

The leftover piece will be 21.95cm long.

4 0
3 years ago
Read 2 more answers
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