Step-by-step explanation:
2(19.2) + 4(x + 7)
= 66.4 + 4x
= 4(16.6 + x)in
Answer:
1. 7
2.-5
4.20
5.1
6.1
7./8.2 variables
9.3variables
10. 25
11.0
12. 1
13. 2
14. 3
15. 5
16. -5
17. 3
18.
19 .28p
hope this helps u
Step-by-step explanation:
I am unable to answer some questions
Answer:
The new mean is 77cm
Step-by-step explanation:
If the mean height of the 30 children in a room is 76 cm, then the sum of their ages is
If James with height 107cm joins them, then the total number of children now becomes 30+1=31 and the total height becomes: 2280cm+107cm=2387cm
The new mean now becomes:
The sign that would make the statement true is the division sign which would then make the full expression, (3 × 7) ÷ 21 = 1.
<h3>How to find the sign?</h3>
The statement given is (3 × 7) 21 = 1. There is therefore a need to find the sign that would be between the brackets and "21" which would lead to the answer being 1.
The brackets have to be solved first according to the PEMDAS rule which calls for parenthesis being solved first.
Solving the expression in the brackets gives:
= 3 x 7
= 21
We therefore need a sign that when related to 21 would give the result, 1.
The only sign that can relate 21 to 21 such that the answer would be 1, is division:
= 21 / 21
= 1
In conclusion, the sign that would make the statement true is a division sign.
Find out more on mathematical signs at brainly.com/question/24034494
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Yes you are correct! It doesn't have a solution which means no solution, hope this helps! :D
