Answer:
Step-by-step explanation:
a) Here we have:
"In Family A, the youngest child is 7 years younger than the oldest, who is 18"
Let's define:
Y = age of the youngest child.
O = age of the oldest child.
Then we know that:
Y = O - 7
O = 18
Then we can replace the second equation into the first one:
Y = 18 - 7 = 11.
b) Here we have:
"In Family B, the middle child is 5 years older than the youngest child."
Let's define:
Y = age of the youngest child.
M = age of the middle child.
Here we have only one equation:
M = Y + 5.
Answer: 7.73 x 2 = 15.46
Step-by-step explanation: 7.73x
<span>The fifth power of ten would not be represented.
Each individual digit would be shown as a power of ten.
982 would be the sum of:
9 times 100. (100 is 10 to the second power)
plus
8 times 10. (10 is 10 to the first power.)
plus
2 times 1. (I is 10 to the zero power.)
The only significant digit represented by a zero is the "hundred thousands"
(100,000 is 10 to the fifth power.)</span>
Answer: -252
Hope this helps!
Answer:
true
Step-by-step explanation:
because CD divided AB into equal halves, so they are of course perpendicular.
