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Vikki [24]
3 years ago
14

Help please I have to get on the regular one soon

Mathematics
2 answers:
dybincka [34]3 years ago
8 0

Answer:

1.   2x + 8y = 10xy

2.   13ab + 15ab = 28ab

Step-by-step explanation:

  This is because for question 2 the "a" and "b" stay together since it's on 13 and 15. So that is why you would get 28ab. For question 1 it's basicly the same but instead, you combine the two to get your answer.

Hope this helps.

rusak2 [61]3 years ago
7 0

Answer:

O.O

Step-by-step explanation:

CHEEEEESEEEEEEEEEE

You might be interested in
-3 3/4 x 5/6 - 2 1/3
alexgriva [62]
Exact form: -131/24 
Decimal form: -5.4583
Mixed Number form: -5 11/24
8 0
3 years ago
Which number is RATIONAL?
vovangra [49]

Answer:

C

Step-by-step explanation:

The square root of 36 is 6.  36 is a perfect square.  6 is a natural number and therefore is rational.

6 0
4 years ago
Add the opposite number of 6/ 5 to the sum of the numbers (−35/4 ) and (−23/6 )
natta225 [31]
-6/5 -35/4 -23/6 = -(72/60 +525/60 +230/60)
= -827/60 . . . . . as an improper fraction
= -13 47/60 . . . . as a mixed number
7 0
3 years ago
population mean =72 and standard deviation =10, what is standard error of distribution of sample means for n=4 and n=25
mixer [17]

Answer:

<u>The standard error of distribution for n = 4 is 5 and for n = 25 is 2.</u>

Step-by-step explanation:

1. Let's review the information given to us for solving the question:

Population mean = 72

Standard deviation  =  10

Sample₁ = 4

Sample₂ = 25

2. For finding the standard error of the mean, we use the following formula:

Standard error = Standard deviation / √Size of the sample

Standard error for Sample₁ = 10/√4

<u>Standard error for Sample₁ = 10/2 = 5</u>

Now, let's find the standard error for Sample₂

Standard error for Sample₂ = 10/√25

<u>Standard error for Sample₂ = 10/5 = 2</u>

4 0
3 years ago
Can someone plz help
il63 [147K]
The triangle must be isosceles. because they have 2 same angles. The two sides of the triangle has to be congruent. 3×5=15, 10+5=15
15=15. the answer would be C.
7 0
3 years ago
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