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3 years ago

Which of the following equations is an example of direct variation?

Mathematics

1 answer:

chubhunter [2.5K]3 years ago

8 0

Answer:

Step-by-step explanation:

$\frac{x}{3}$

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3(3−3)=2(+3)−30 how do I do this???? I'm in 10th grade and this confuses me every time.

astra-53 [7]

Well when you simplify it you get this,

0=-24,

Do what’s inside the parentheses first

3-3 is 0, 3•0 is 0

2•positive 3 is 6

6- -30 is -24

So you have 0=-24

Or just -24 :)

4 0

2 years ago

Suppose you have a bag containing 2 black marbles and 3 red marbles. You reach into the bag, select a marble, see what color it

TiliK225 [7]

Answer:

$\dfrac{9}{25}$

Step-by-step explanation:

Given that the bag contains black and red marbles.

Number of black marbles in the bag = 2

Number of red marbles in the bag = 3

Total number of marbles in the bag = Number of black marbles + Number of red marbles = 2 + 3 = 5

Let us have a look at the formula for probability of an event E, which can be observed as:

$P(E) = \dfrac{\text{Number of favorable cases}}{\text {Total number of cases}}$

$P(\text{First red marble}) = \dfrac{\text{Number of red marbles}}{\text{Total number of marbles}} = \dfrac{3}{5 }$

Now, the marble chosen at first is replaced.

Therefore, the count remains the same.

$P(\text{Second red marble}) = \dfrac{\text{Number of red marbles}}{\text{Total number of marbles}} = \dfrac{3}{5}$

Now, the <em>required probability</em> can be found as:

$P(\text{First red marble})\times P(\text{Second red marble}) = \dfrac{3}{5}\times \dfrac{3}{5} = \bold{\dfrac{9}{25} }$

3 0

3 years ago

A slope of -5 that passes through (2,15)

amm1812

Answer:

y=-5x+25

That is the answe in slope intercept form

8 0

3 years ago

At the start of the softball season, the p players on the Hammerin' Homers softball team each

Lapatulllka [165]

(18*7)+(20*10) * means times

8 0

3 years ago

If 4/9 of the 63 fishes in the tank were guppies. How many of the fish were not guppies

ArbitrLikvidat [17]

35 were not guppies.

Explanation:
63/9=7
7*4=28
63-28=35

8 0

3 years ago