1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
artcher [175]
3 years ago
8

In a seventh grade class, 14 out of 30 students are boys. In simplest terms, what is the ratio of the number of boys to the numb

er of girls in this grade?
Mathematics
2 answers:
Grace [21]3 years ago
5 0
14 boys : 16 girls

but this would have to be simplified also

7:8
Degger [83]3 years ago
4 0
If 14 of 30 kids are boys, than that means that 16 are girls. The first ratio is 14:16 but you can simplify this down to 7:8. So the ratio of boys to girls is 7:8. 

Hope I helped!
You might be interested in
What is 7/4 as a mixed number? A. 13/4 B. 11/4 C. 3/4 D. 17/4
natima [27]
7/4 as a mixed number is the mixed number 1 3/4
3 0
3 years ago
Read 2 more answers
Suppose on a certain planet that a rare substance known as Raritanium can be found in some of the rocks. A raritanium-detector i
aleksandrvk [35]

Answer:

0.967 = 96.7% probability the rock sample actually contains raritanium

Step-by-step explanation:

Conditional Probability

We use the conditional probability formula to solve this question. It is

P(B|A) = \frac{P(A \cap B)}{P(A)}

In which

P(B|A) is the probability of event B happening, given that A happened.

P(A \cap B) is the probability of both A and B happening.

P(A) is the probability of A happening.

In this question:

Event A: Positive reading

Event B: Contains raritanium

Probability of a positive reading:

98% of 13%(positive when there is raritanium).

0.5% of 100-13 = 87%(false positive, positive when there is no raritanium). So

P(A) = 0.98*0.13 + 0.005*0.87 = 0.13175

Positive when there is raritanium:

98% of 13%

P(A) = 0.98*0.13 = 0.1274

What is the probability the rock sample actually contains raritanium?

P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.1274}{0.13175} = 0.967

0.967 = 96.7% probability the rock sample actually contains raritanium

7 0
2 years ago
A bicyclist travels at a constant speed of 12 miles per hour for a total of 45 minutes. (Use set notation for the domain and ran
Mamont248 [21]

A bicyclist travels at a constant speed of 12 miles per hour for a total of 45 minutes.

We know the formula , Distance = speed * time

Speed is constant and it is 12. So it  is linear

The function becomes d = 12t, x is the t is the time and d is the distance

At the starting point, t=0  and distance d=0

End point , t=45 min = 0.75 hours and distance = 12 * 0.75 = 9

So domain (t) is {x|0}

Range (d) is {y|0}

5 0
3 years ago
Read 2 more answers
You manage a risky portfolio with an expected rate of return of 18% and a standard deviation of 28%. The T-bill rate is 8%. Your
Fofino [41]

Answer:

y = 0.80

Step-by-step explanation:

Given:

- The expected rate of return for risky portfolio E(r_p) = 0.18

- The T-bill rate is r_f = 0.08

Find:

Investing proportion y of the total investment budget so that the overall portfolio will have an expected rate of return of 16%.

What is the proportion y?

Solution:

- The proportion y is a fraction of expected risky portfolio and the left-over for the T-bill compliance. Usually we see a major proportion is for risky portfolio as follows:

                                     E(r_c) = y*E(r_p) + (1 - y)*r_f

                                     y*E(r_p) + (1 - y)*r_f = 0.16

- Re-arrange for proportion y:

                                     y = ( 0.16 - r_f ) / (E(r_p) - r_f)

- Plug in values:

                                    y = ( 0.16 - 0.08 ) / (0.18 - 0.08)

                                    y = 0.80

- Hence, we see that 80% of the total investment budget becomes a part of risky portfolio returns.                                    

               

4 0
3 years ago
Write the number254 as a sum of hundreds,tens, and ones
Jlenok [28]
200+50+4 I think is the answer
4 0
3 years ago
Read 2 more answers
Other questions:
  • Two identical number cubes are shown in the picture above. The edge length of these number cubes is 7 centimeters.
    5·1 answer
  • Solve the inequality. Graph the solution. c9≤−4
    11·1 answer
  • What is 55% of 723 PLEASE HELP
    13·2 answers
  • The perimeter of an isosceles triangle is 14 cm. One of its sides is twice longer than another of its sides. Find all sides of t
    9·2 answers
  • A city park is in the shape of a square. The area of the park is 441 yards2. How many feet long is one side of the park? A) 7 fe
    10·1 answer
  • Post A and Post B are 120 meters apart. Post B and Post C are 300 meters apart. Ben cycled from Post A to Post B in 15 seconds.
    15·2 answers
  • 10 PTS! <br> Solve the following expression:<br><br> 3²⁰  x  2¹⁰<br> ————— <br> 3    x  2²
    14·1 answer
  • Solve x-5/7-2x=5-x/3+1<br>CAN ANYONE ANSWER​
    10·1 answer
  • Find the value of x.
    8·1 answer
  • Why do circular pizzas come in square boxes?​
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!