Answer:
-a-13
Step-by-step explanation:
-2 * (a+3)
-2a - 6 -7 + a
-2a+a = -a
-6-7= -13
-a - 13
Answer:
d.10cm,5cm,9cm
Step-by-step explanation:
In a triangle, the length of each side must be between the difference and the sum of the lengths of the other sides.
a. 1 + 1 = 2; 2 < 3 Answer: no
b. 2 + 3 = 5; 5 = 5 Answer: no
c. 10 - 3 = 7; 7 > 4 Answer: no
d. 10 + 5 > 9
5 + 9 > 10
10 + 9 > 5
10 - 5 < 9
10 - 9 < 5
9 - 5 <10
Answer: yes
Answer:
Step-by-step explanation:
2800: 2 * 2 * 2 * 2 * 5 * 5 * 7
75: 3 * 5 * 5
168: 2 * 2* 2 * 3 * 7
It's not really multiplication. It's more division.
Try 2800 as a sample. What you are trying to do is break this down into primes. The first prime is 2
2800/2 = 1400
1400 / 2 = 700
700 / 2 = 350
350 / 2 = 175. That's the end of what the 2s can do.
175 / 5 = 35
35/ 5 = 7 7 is a prime. You are done. Now run up the ladder.
2800: 2 * 2 * 2 * 2 * 5 * 5 * 7
75 is not an even number. It has no 2s. Go to 3
75 / 3 = 25.
25 / 5 = 5
That's the end
75: 3 * 5 * 5
Your calculator can be of great help. The rule is keep factoring until you get a decimal remainder. Move on to the next prime. Stop when the last division gives you a prime.
ANSWER
129
EXPLANATION
The given expression is:
Deal with the parenthesis first.
Deal with exponents,
Divide now
Multiply
You can now add to get
The order of operations is PEDMAS
