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ehidna [41]
3 years ago
8

Find the probability. Round your answer to the nearest hundredth, if needed.

Mathematics
1 answer:
padilas [110]3 years ago
5 0

Answer:

0.2

Step-by-step explanation:

Given:

Total number of students = 20

Number of students who have brown hair = 12

Number of students who have blonde hair = 4

Number of students who have red hair = 3

Number of students who have black hair = 1

To find:

Probability of randomly selecting a blonde-haired student from the classroom.

Solution:

Probability refers to chances of occurring of some event.

Probability = Number of favourable outcomes/ Total number of outcomes

Number of favourable outcomes ( Number of students who have blonde hair ) = 4

Total number of outcomes = 20

So,

Probability of randomly selecting a blonde haired student from the classroom = \frac{4}{20}=\frac{1}{5}=0.2

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Question #2:
Lesechka [4]

Answer:

If 4/8 cm = 25 miles

If 4.8 cm = 240 miles

If 48 cm = 2400

Step-by-step explanation:

4/8 x 50

4.8 x 50

48 x 50

I was unsure if there was a fraction bar or decimal. or if it was 48 so I gave all possibilities.

3 0
3 years ago
Given f(x) = 9x - 10, find f(8) *
Rama09 [41]

Answer:

\huge\boxed{f(8) = 62}

Step-by-step explanation:

\sf f(x) = 9x-10\\\\Put\ x = 8\\\\f(8) = 9(8) -10\\\\f(8) = 72-10\\\\f(8) = 62\\\\\rule[225]{225}{2}

Hope this helped!

<h2>~AnonymousHelper1807</h2>
3 0
3 years ago
Read 2 more answers
If Sam has 6 different hats and 3 different scarves, how many different combinations could he wear
adelina 88 [10]
18

He can wear a different hat with one scarf so if that is multiplied by 6*3 you will get 18 different combinations that Sam can wear
6 0
3 years ago
Read 2 more answers
The length of two sides of a right triangle are leg:
Goryan [66]

Answer:

11.2m

Step-by-step explanation:

Using Pythagoras,

a²+b²=c²

10²+b²=15²

100+b²=225

b²=225-100

b²=125

b=√125

b=11.2m

8 0
2 years ago
Two times a number is at least 16.<br> Inequality
kati45 [8]

Answer:

3x - 16 <= 8

Step-by-step explanation:

The key is to translate this problem, one step at a time:

Write an inequality

This tells us that we'll use >, <, ≥, or ≤ instead of = when describing the two sides of the equation.

that represents five less than

This tells us that we need to take away, or subtract 5: –5

two times a number

We don't know the number, so let's call it x. Two times x is 2x.

Then, the previous step tells us we want five less than twice the number, so we say 2x –5.

that is at least fifteen

"At least fifteen" tells us the first part of the equation can be greater than or equal to 15, which means we need the ≥ sign. If the phrase said "greater than fifteen," we'd use >.

Putting it all together, we get 2x – 5 ≥ 15.

then solve the inequality

We undo everything the algebra did to x to solve in the reverse order.

2x – 5 ≥ 15 First, undo the subtraction by adding 5 to both sides.

2x ≥ 20  Next, divide both sides by 2.

x ≥ 10.   We see that x has to be greater than or equal to 10. This means we could pick any number, 10 or greater, and plug it back into the equation we constructed to check our answer.

6 0
2 years ago
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