She's rounding down. Thinking you use the number from the hundred place. You round using the tens place. It's over 50 so u go off the 75 in this case ending up with 1,300
1.
The edge lengths of a triangle are inversely proportional to 2,3 and 4.
The actual proportions of the lengths are then
12(1/2:1/3:1/4)=6:4:3
The longest side
= 39* (6/(6+4+3)
= 39*6/13
=18
2. 63 breads : 35 kg flour
is the same as
54 breads : x kg flour
Cross multiply and get
x=54*35/63=30
30 kg of flour are needed to make 54 breads.
Answer:
mean and range
Step-by-step explanation:
Answer:
the output is 9.
Step-by-step explanation:
9*8 - 7 = 10 + -1 = 9
This means 9 = output
Answer:
-A
Step-by-step explanation:
Additive inverse is just changing the sign of the number and adding it to the original number