Benchmark 1 - big ideas math - grade 7
24. jack's mother is 44 years old. she is 4 years older than 8 times jack's age. the
equation 8a + 4 = 44 represents this situation.
how old is jack?
a. 5
b. 6
c. 9
d.13

Jack is five. so, it's A

Step-by-step explanation:

subtract 4 from both sides of the equation. You can cancel out the four on the left, and get 40 on the right (since you took four away from 44.)

Then, divide by 8 on both sides. The eight is canceled out on the left. eight goes into 40 five times, meaning a=5.

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)

30005

yes ok