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drek231 [11]
3 years ago
12

What is the sum of 70 and 80​

Mathematics
1 answer:
Hunter-Best [27]3 years ago
5 0

Answer:

150

Step-by-step explanation:

The calculator :)

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The sum of two number is 50,and their difference is 30.find the numbers​
Mrac [35]

Answer:

40 and 10

Step-by-step explanation:

if you add them you get 50 and if you subtract them you get 30

6 0
2 years ago
Read 2 more answers
Which angles are right?
notka56 [123]

A & C are correct.

Reason - Forms 90°

See pic.

- Toodles!~

3 0
2 years ago
The sum of twice a and 4<br>Sorry if this isnt much info. That's all what was written in the paper
JulijaS [17]
The way you wrote it could have 2 meanings:

Sum of twice a and 4 could be:
2a+4 or 2(a+4) which will give different results.

In the first case:
2a+4
a= 4/2
a= 2
So the sum would be 2*2+4 = 4+4 = 8

In the second case:
2(a+4) = 2a + 2*4 = 2a + 8
a= 8/2
a=4

2(4+4) = 2*8 = 16
5 0
3 years ago
How many different positive integers can be represented as a difference of two distinct members of the set {1, 2, 3, 4, 5, 6}?
slega [8]

For the difference to be positive, when both the minuend and the subtrahend are positive, the former must be greater than the latter.

Therefore

minuend = 2 ⇒ subtrahend = 1 ← 1 number

minuend = 3 ⇒ subtrahend = 1,2 ← 2 numbers

minuend = 4 ⇒ subtrahend = 1,2,3 ← 3 numbers

minuend = 5 ⇒ subtrahend = 1,2,3,4 ← 4 numbers

minuend = 6 ⇒ subtrahend = 1,2,3,4,5 ← 5 numbers

1+2+3+4+5=<u>15</u>

5 0
2 years ago
Step 1: Calculate the measures of center for Mrs. Hampton's data in the dot plot (round your answer to the nearest tenths place)
Deffense [45]

*dot plot is shown in the attachment below

Answer:

Mean = 6.3

Median = 6

Step-by-step explanation:

Measures of centre, mean and median, can be calculated as follows:

First, bear in mind that each dot represents a value in the data set.

==>Mean:

Mean is the sum of all values in the data set divided by the number of data set we have.

The sum can be calculated as follows:

0 (1) = 0

4 (3) = 12

5(8) = 40

6(3) = 18

7(1) = 7

8(5) = 40

9(2) = 18

10 (3) = 30

Sum = 0+12+40+18+7+40+18+30 = 165

No of data set = 26

Mean = 165/26 = 6.346 ≈ 6.3 (nearest tenth place)

==>Median: this is the middle value in the data set. Since the number of data set is even number (26) , the middle value lies between the 13th and 14th data points. The average of the 13th and 14th data points will give us the median value.

Thus, the 13th and 14th values are both 6.

Therefore, median = (6+6) ÷ 2 = 6

8 0
2 years ago
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