4+20x-10x
4+10x
10x+4
hope this helps!!!
Step-by-step explanation:
Given the average of 8 numbers = 56.
Then the Total sum of 8 numbers = 56 * 8
= 448.
Sum of 1st three numbers = 49 + 57 + 72
= 178.
So, the total = 448 - 178
= 270.
Average of the other 5 numbers = 270/5
= 54.
Verification:
178 + 270 = 448/8
= 56.
Answer:
d=100
Step-by-step explanation:
.99d=10 + .89d
subtract .89d from both sides
.1d=10
divide by .1 on both sides
d=100
to check plug in 100 in place of d
Answer:
Impossible
Step-by-step explanation:
In 5x^2-4x+3=0, standard form, substitute these values in the quadratic formula:
a = 5; b = -4; c = 3
The quadratic formula is 
(ignore the weird capital A)
Substitute a b and c:

Simplify:

Because
is the square root of a negative number, the answer would be imaginary.
Therefore, there are not solutions to this equation.
A solution is the same as the roots or zeroes, where the graph would cross the x-axis when graphed.
The graph never meets the x-axis. It looks like this:
Answer:
D
Step-by-step explanation:
-d + 2 < -1
-16 + 2 < -1
-14 < -1, which is true since -14 is less than -1