Answer:
<h2>No, Sandra is not correct.</h2>
Step-by-step explanation:
Sandra was needed to multiply 438 by 17.
.
17 = 10 + 7.
Sandra multiplied 438 by 1 and then multiplied 438 by 7. Sandra had taken as the answer.
Multiplying by 1 and multiplying by 10 is not same.
Sandra mistakenly multiplied 438 by 1 instead of 10.
Hence, Sandra got the wrong answer.
Where the problem so I can tell you
6.70, 6.700, 6.7000, 6.70000, and so on.
Jack was planting a tree. He was to dig a hole that was 3 feet deep for every 5 feet of tree height. How deep should he dig the hole for a tree that is 17feet high.
Calculations Cross multiplication
=
5x = 2 x 13
Divide by 5 to isolate x
=
x = 10.2
Answer = 10.2
After h hours A has 6000 - 2000h cells and B has 2000 - 1000h. Equating them as one form:
6000 - 2000h = 2000 - 1000h
-2000h + 1000h = 2000 - 6000
-1000h = -4000
h = -4000/-1000 = 4 hours