(2 - 7z)(2 + 7z)
= (2)^2 - (7z)^2
= 4 - 49z^2
Answer:
15$
Step-by-step explanation:
Okey so first we establish that 25 is 100%
Matthew gets 60%
First we find 10% by dividing both sides by 10
2.5 = 10%
Then we times these numbers by 6 to find 60%
<u>60% = 15</u>
Matthew will earn <u>15$</u>
Luke will earn 10$
3= -1 + 7y x 10 to the second power
ANSWER
9.7 units
EXPLANATION
According to the Pythagoras Theorem, the square of the hypotenuse is equal to the sum of the squares of the two shorter legs
This implies that,
Group similar terms,
to the nearest tenth.
4. 15 + 4x = 6 + 5x
-x = -9
x = 9
5. Sally : x , Martha : y
x = 2 + y
x + y = 5.64
2 + y + y = 5.64
2y = 3.64
y = 1.82
Sally paid $1.82.
6. Bob : x , Tim : y
x = y - 3
x + y =7.80
y - 3 + y = 7.80
2y = 10.80
y = 5.4
Bob spent $5.40.
