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Ymorist [56]
3 years ago
5

A box contains 20 red marbles and 30 blue marbles. A second box contains 10 white marbles and 40 black marbles. If you choose on

e marble fra
each box without looking, what is the probability that you get a blue marble and a black marble?

Mathematics
1 answer:
Vesna [10]3 years ago
3 0

Answer: 2/20, because all those marbles in total is 100. the blue and black marbles would be 70, if you simplify all of it it'd be 2/25.

Step-by-step explanation:

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Solve for x<br> HELLLLP​
charle [14.2K]

Simplifying

25x + -15 = 2y

Reorder the terms:

-15 + 25x = 2y

Solving

-15 + 25x = 2y

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '15' to each side of the equation.

-15 + 15 + 25x = 15 + 2y

Combine like terms: -15 + 15 = 0

0 + 25x = 15 + 2y

25x = 15 + 2y

Divide each side by '25'.

x = 0.6 + 0.08y

Simplifying

x = 0.6 + 0.08y

3 0
3 years ago
What else would need to be congruent to show that ABC =XYZ by SAS?<br> Given:<br> AB=XY<br> A=X
Sati [7]

ABC = XYZ  by  SAS

AB = XY    -     Side

A = X         -    Angle

So you want to find another congruent <em>side</em>.

Removing the taken possible side, two sides can be congruent.

Either :

BC = YZ

<em>OR</em>

AC = XZ

5 0
3 years ago
Read 2 more answers
22<br> Solve for x.<br> 3x - 5 = 10<br> x equals.....<br> help
kramer

Answer:

x = 5

Step-by-step explanation:

3x - 5 = 10

We want to isolate the x.

3x - 5 = 10\\+5\;\;\;\;\;\;\;\;\;         +5

3x = 15

Now, we want the x not to have a coefficient. We want it just to be x =. We will do this via inverse operations. Since 3 x is 3 multiplied by x, we will divide each side by 3.

\frac{3x}{3} \;=\;\frac{15}{3}

x = 5

~InLoveWithPugs

Moderator\\Math \ Enthusiast

7 0
2 years ago
A company ships packages through the postal service. One week, the cost of shipping one
DanielleElmas [232]

Answer:

Step-by-step explanation:

For this problem, it says that the company not only shipped packages, but also bought a number of stamps. From the equation 6.70+0.50x, it's fairly easy to say that 6.70 is the packages,

What's not so easy is figuring out whether or not 0.50 is the stamps, or x is. However, there's an easy way to figure it out!

From this one, we would have to use "common sense" (not my words, someone elses). Using "common sense", we have to think, can someone buy 0.50 of a stamp?

Technically yes... But would someone buy 0.5 of a stamp? Not really.

So we can safetly assume that x is the "stamp", and 0.50 is <em>the cost of the stamp</em>.

Hope this helps!

7 0
2 years ago
F(x) = x 2+ 6 and g(x) = 2x - 1<br><br> g[f(x)] =
Tasya [4]

Answer:

Given,

f(x)=x^2+6

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Now,

g[f(x)]=g(x^2+6) since f(x)=x^2+6

=2(x^2+6)-1 since x > x^2+6

=2x^2+12-1

=2x^2+11

6 0
3 years ago
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