Plug 129 for x
(-12 x 129)+(14 x 129)-(6 x 129)
Which would be -1548+1806-774
Which equals -516
Answer:
Discount rate=33%
Step-by-step explanation:
Step 1
Determine the discounted amount as shown;
A=I-F
where;
A=discounted amount
I=initial price/original price
F=final price after discount
In our case;
A=unknown
I=$75
F=$50
replacing;
A=(75-50)=25
The discounted amount=$25
Step 2
Determine the discount rate using the formula;
Discount rate=(discount amount/original amount)×100
Discount rate=(25/75)×100=33.33%
Discount rate=33%
You can just look at it and already tell it’s B
Answer:
lateral surface area of a pyramid= 1/2pl or pl/2
Answer:
(3x +2)(x +1)
Step-by-step explanation:
A number of different ways are suggested for doing this. One that seems straightforward is this.
For ax^2 +bx +c, look for factors of ac that total b. Here we have ...
ac = 3·2 = 6
b = 5
It is easy to see that the factors we just multiplied to get 6 are ones that total 5: 3+2 = 5.
Now, rewrite the "bx" term using this sum.
3x^2 +3x +2x +2
Factor each pair of terms.
3x(x +1) +2(x +1)
And factor out the common factor:
(3x +2)(x +1)
