3 years ago

What is the solution to the equation below? Round your answer to two

Mathematics

2 answers:

scoundrel [369]3 years ago

7 0

Answer:

A._____________________

4vir4ik [10]3 years ago

4 0

Answer: -0.51

Step-by-step explanation:A P E X

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What is 12a equal to if 4a plus 6b = 10 and 2a-4b=12?

hram777 [196]

12a=x
4a+6b=10
2a+3b=5
2a-4b=12
a-2b=6
2a+3b+1=a-2b
a+5b+1=0
a=-1-5b

2(-1-5b)+3b=5
-2-10b+3b=5
-2-7b=5
-7b=7
7b=-7
b=-1

-1-5*-1=a
-1+5=a
4=a

4*12=48
12a=48

Hope this helps :)

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Round 6.81 to the nearest tenth

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6.8 is the answer!!!!

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Of 80 t-shirts, 10% are white, 30% are blue and the rest are red. How many are red?

juin [17]

There is 60% of red t-shirts 40% of them are white and blue so the reds are 60%

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You want to make a snowman. The ball of snow that you use for the base has a volume of about 9,203 cubic inches. Find the radius

Katyanochek1 [597]

4/3 pi r^3 = 9203

r^3 = 9203 / (4/3 * 3.14) = 2198.17

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3 years ago

Solve.<br> x^2+9x+2=0<br> thanks!

shtirl [24]

Step one:
ALWAYS set equation equal to zero, which in this case has already been done for us.

Step two:
Figure out what formula you need to use in order to solve in this case I'd use the Quadratic formula.

a=1
b=9
c=2

Quadratic formula:
$x = \frac{ - b + - \sqrt{(b) ^{2} - 4(a)(c)} }{2(a)}$
Then you would plug in the information.
$x = \frac{ - 9+ - \sqrt{(9) {}^{2} - 4(1)(2) } }{2(1)}$
The solve for what is underneath the square root ONLY.
$x = \frac{ - 9 + - \sqrt{73} }{2}$
Since you cannot solve this any further, your final two answers are...
$x = \frac{ - 9 + \sqrt{73} }{2}$
$x = \frac{ - 9 - \sqrt{73} }{2}$

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3 years ago