Answer:
a = 9
Step-by-step explanation:
First we need to add (x^2+3x) to (3x^2+ax),
(x^2+3x)+(3x^2+ax)
Expand
= x^2+3x+3x^2+ax
Collect the like terms
= x^2+3x^2+3x+ax
= 4x^2 + 3x + ax
= 4x^2+(3+a)x
Equate the solution to 4x^2+12x
4x^2+(3+a)x = 4x^2+12x
Comparing the like terms on both sides
(3+a)x =12x
3 + a = 12
a = 12 - 3
a = 9
Hence the value of a is 9
Answer:
skew.
Step-by-step explanation:
Lines e and c are skew lines.
<u>Reason:</u>
They do not intersect with each other.
They are in different planes.
They are nor parallel to one another....
Answer:
15
Step-by-step explanation:
5/15=3/v
5v=15×3
5v=75
5v/5=75/5
v=15
Brandy got 1162 scoring for competing in the bonus round of the particular game show.
Step-by-step explanation:
- By getting the 523 scores in the literature questions sections a 639 point in the automobile section. next could be the bonus round.
- So the score she obtained so far to compete in the bonus round is found by the addition of the two scores.
- The addition of 523 and 639 gives us 1162 which is the score for entering the bonus round.
Answer:
Step-by-step explanation:
9*7=63
63
triangle area=21
63+21=84
