Please help with this question

Mathematics

1 answer:

crimeas [40]4 years ago

4 0

This is a guess just so you know...

I think the answer is (4,-6) because that is the point at which the two lines intersect sooooo....

I'm going with option 3.

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Two identical jars are filled with equal numbers of marbles. The marbles are colored red or white. The ratio of red to white mar

IrinaK [193]

Let $a=$ the number of white marbles in Jar 1
Let $b=$ the number of white marbles in Jar 2
Total number of white marbles is $a+b=90$

Jar 1 has $a$ white marbles and $7a$ red marbles so $8a$ marbles total
Jar 2 has $b$ white marbles and $9b$ red marbles so $10b$ marbles total
Since both jars have equal amounts of marbles, $8a=10b$

We have a system of equations:
$a+b=90$
$8a=10b$

The number of red marbles in Jar 2 is $9b$ so we solve for $b$

$8a=10b$
⇒ $a=\frac{5}{4}b$
⇒ $\frac{5}{4}b+b=90$
⇒ $\frac{9}{4}b=90$
⇒ $b=40$
Number of red marbles in Jar 2 is $9b=360$

So there are 360 red marbles in Jar 2.

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3-1 /-5-4
2/-9
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If f(x)=25-x^2 and g(x)=x+5, what is (f/g)(x)?

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Answer:

$\frac{f(x)}{g(x)} = (5-x)$