Answer:
She will have to mow 7 lawns
Step-by-step explanation:
You do 425 -625 too see how much more money she needs
you get 175 . then each lawn is 25 so 175 divided by 25 is 7 . so she has mow 7 lawns
Answer:
10x-2x-4=8x-4 اتمنى لك التوفيق
Answer:
Step-by-step explanation:
9x⁴ – 2x² – 7 = 0
Let's say that u = x²:
9u² – 2u – 7 = 0
Factor:
(u – 1) (9u + 7) = 0
u = 1, -7/9
Since u = x²:
x² = 1, -7/9
x = ±1, ±i √(7/9)
Answer:
136
Step-by-step explanation: 34 multiplied by 4