(82,82,) (x+y) answer short
Answer:
1)
32x^2 - 28x - 15
2)
30x^2 + 54x - 12
Step-by-step explanation:
1.
(8x+3)(4x-5)
Using FOIL
= (8x)(4x) + (8x)(-5) + (3)(4x) + (3)(-5)
= 32x^2 - 40x + 12x - 15
= 32x^2 - 28x - 15
2.
(10x-2)(3x+6)
Using FOIL
= (10x)(3x) + (10x)(6) + (-2)(3x) + (-2)(6)
= 30x^2 + 60x - 6x - 12
= 30x^2 + 54x - 12
Answer:
Step-by-step explanation:
There is no rectangle> no picture
Answer:the son working alone will take 1¹/₂ hours
Step-by-step explanation:
Step 1
let x represent the hours that the son needs to wash and wax the car alone thus his rate is 1/x cars per hour
While
the rate of the father is 1/3 cars per hour
, working together rate is 1/1 cars per hour.
Step 2
Writing it mathematically, becomes
1/x + 1/3 = 1/1
Dividing through by 3x so all denominations can be rqual to 1 , we have
3 + x = 3x
3= 3x-x
3= 2x
x= 3/2
Therefore the son working alone will take 1¹/₂ hours
The answer would be 30 they have 30 pencils altogether. If the ratio is 3:4 and morgan has 16 pencils that means it was simplified by 4 . so if you times 3 times 4 then add 16 you will get the over all question
