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rusak2 [61]
3 years ago
15

Solve. 3a+6=15 a=3 a=9 a=7 a=5

Mathematics
2 answers:
dolphi86 [110]3 years ago
6 0

Answer:

The answer is a=3

Step-by-step explanation:

because if you were to subsitute you would do

3(3) + 6 =15

9 + 6 = 15

which is a true statement

Hope this helped!

(・∀・(・∀・(・∀・*)

(btw you dont have to give me brainliest( ̄︶ ̄)↗ )

laiz [17]3 years ago
3 0
The answer for this is a=3
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What are two numbers multiplied together to get 15 but add to be 12?
KiRa [710]
So x times y=15
x+y=12
solve
x+y=12
subtract x from both sides
y=12-x
subsitute
xy=15
x(12-x)=15
distribute
12x-x^2=15
subtract (12x-x^2) from both sides
0=x^2-12x+15
use quadratic formula which is
x=\frac{ -b+/- \sqrt{b^{2}-4ac} }{2a}
where you have
0=ax^2+bx+c
so
a=1
b=-12
c=15
subsitute
x=\frac{ -(-12)+/- \sqrt{-12^{2}-4(1)(15)} }{2(1)}
x=\frac{ 12+/- \sqrt{144-60} }{2}
x=\frac{ 12+/- \sqrt{84} }{2}
x=\frac{ 12+/- 2\sqrt{21} }{2}
x=6+/- \sqrt{21}
x=6+ \sqrt{21} or 6- \sqrt{21} or aprox
x=10.5826 or 1.41742
the numbers are 10.5826 and 1.41742






3 0
4 years ago
Solve the following proportion for u.<br> 17/13=u/4
icang [17]

Answer:

u=5.23

Step-by-step explanation:

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5 0
3 years ago
PLEASE HELP ME!! I need you to solve this inequality.<br> 2/3x - 1/5 &gt; 1
Verizon [17]

Answer:

If you are trying to solve the inequality for "x" Then your answer is, <u><em>"x>9/5" </em></u>That is the inequality form. If you are looking for the interval notation form then your answer is <u><em>"9/5, infinity" </em></u>

Step-by-step explanation:

I have checked my answers against an online Algebra solver. So my answers are 100% correct.

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7 0
3 years ago
Which of the following represents the factorization of the trinomial below?<br>x2 - 6x +9​
valentinak56 [21]

For this case we must factor the following expression:

x ^ 2-6x + 9

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Then, the factored expression is of the form:

(x-3) (x-3) = (x-3) ^ 2

Thus, the correct option is option C.

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3 years ago
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