Answer:
3 roots
Step-by-step explanation:
(9x+7)(4x+1)(3x+4)=0
x=-7/9 or - 1/4 or - 4/3
Answer:
4828 = 68 x 71
Step-by-step explanation:
how I looking at it all I did was multiply
Answer:
20% probability that the next customer will pay with cash
Step-by-step explanation:
A probability, as a decimal, is the number of desired outcomes divided by the number of total outcomes.
To find as percent, we multiply by 100.
In this question:
Total of 54+63+153 = 270 customers.
Of those, 54 paid with cash.
Based on the number of customers from last week, what is the probability as a percent that the next customer will pay with cash?
54/270 = 0.2
0.2*100 = 20%
20% probability that the next customer will pay with cash
Lets take a look at the options first.
option 1 and option 4 are not possible as (8x) (8x) would give us 64x^2, which is not what we want.
we’re left with option 2 & 3. when expanded, option 2 will look like :
16x^2 - 40x - 10x + 25
= 16x^2 - 50x + 25
however, we do not want the 50x. so the answer is option 3, (4x-5) (4x+5)
if you don’t want to find the answer using expanding, there is also another method of expanding.
(a+b)^2 = a^2 - b^2
in this case, 16x^2 will be a^2 and 25 will be b^2. not sure whether you’ve learn this but yea.
Answer:
A !
Step-by-step explanation:
Substitute the value of the variable into the expression and simplify.
Hope this helps!
-Lei
