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Anna71 [15]
3 years ago
11

2) A number is chosen at random from 1 to 50. Find the probability of selecting

Mathematics
1 answer:
Leya [2.2K]3 years ago
6 0

Answer: 1/5

explanation: 10,11,12,13,14,15,16,17,18, and 19 all have a one in the tents place. These are 10 numbers. Out of the 50 numbers that can possibly be chosen, only 10 have a one in the tens place. The chance of you picking these numbers is 10/50, or 1/5 when simplified

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3. A bag has five blue marbles, seven red marbles and nine green marbles. Three marbles are drawn
Arte-miy333 [17]

Answer:

The probability is 9/266

Step-by-step explanation:

The first thing to do here is get the total number of marbles = 5 + 7 + 9 = 21 marbles

Now we are drawing the marbles without replacement, this means once a marble is drawn there is a decrease in the total number of marbles left.

The probability of drawing a green marble initially = number of green marbles/ total

number of marbles = 9/21 = 3/7

Now, we want to draw a blue marble

There are 5 blue marbles and we have already drawn one marble from the total. So the probability of drawing a blue marble would be 5/20 = 1/4

And lastly, another green marble

That would make 6 green marbles left and a total of just 19 left. So the probability at this point for green marbles = 6/19

Having and in probability means we multiply all

So this means the probability we are calculating is; 3/7 * 1/4 * 6/19 = 18/(28 * 19) = 9/(14 * 19) = 9/266

7 0
3 years ago
PLEASE HELP ASAP<br> ITS GEOMETRY
omeli [17]

Angle 1 and angle 3 are vertically opposite angles. And both angles are congruent with each other.

<h3>What is an angle?</h3>

The angle is the distance between the intersecting lines or surfaces. The angle is also expressed in degrees. The angle is 360 degrees for one complete spin.

Supplementary angle - Two angles are said to be supplementary angles if their sum is 180 degrees.

Line L and line M intersect each other.

Angle 1 and angle 2 are supplementary angles.

∠1 + ∠2 = 180°         ...1

Angle 2 and angle 3 are supplementary angles.

∠2 + ∠3 = 180°        ...2

From equations 1 and 2, then we have

∠1 + ∠2 = ∠2 + ∠3

∠1 = ∠3

The vertically opposite angles are angle 1 and angle 3. Furthermore, the two angles line up perfectly.

More about the angled link is given below.

brainly.com/question/15767203

#SPJ1

5 0
1 year ago
ILL GIVE BRAINLIST ! Jamie spends the day at an amusement park. The table shows how many
leonid [27]
The answer is C because he starts off with 16 dollars and then spends it all on 4 rides
7 0
3 years ago
Factor to find the zeros of the function defined by the quadratic expression. −7x2 − 91x − 280
Mariulka [41]
There are no zeroes for an expression, only for equations.
Assuming equation to be
<span>−7x^2 − 91x − 280=0
-7(x^2+13x+40)=0
-7(x+8)(x+5)=0
by the zero product properties, 
x+8=0 => x=-8
or 
x+5=0 => x=-5</span>
3 0
3 years ago
Two problems I can’t get is; 94-4.8 I know the answer is 89.2 but how?
vekshin1

Answer:

have the correct answer

Step-by-step explanation:

a-line the decimals nd subtract

6 0
3 years ago
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