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
aleksklad [387]
2 years ago
11

Out of the 25 students in Mrs. Coulter's class, 15 are girls. In the school there are 390 boys. If the ratio of boys to students

in Mrs. Coulter's class is proportional to the ratio of the number of boys in the school to the total number of students in the school, how many students are at the school?
Mathematics
2 answers:
GREYUIT [131]2 years ago
6 0

Answer:

975 students

Step-by-step explanation:

This is a dense question. Let's look at it piece by piece:

1. The ratio of boys to students in the class is 10/25. If there are 25 students and 15 girls, that leaves 10 boys.

2. The question says that the ratio is in proportion of boys to total students in the school. "In proportion" in this case means that if we convert 10/25 to a fraction with numerator 390, the denominator is the amount of students in school.

3. 10x39=390. What you do the numerator you must do to the denominator: 25x39=975.

4. This means 975 students go to the school.

kotegsom [21]2 years ago
6 0
That is correct I would say!
Ty for the explanation
You might be interested in
I am a factor of 32. The other factor is 4 . What number am i
julsineya [31]
The other number is 8 because 8 x 4 = 32
6 0
3 years ago
Read 2 more answers
Which expression is equivalent to (5³) ‐²? (4 points)
miss Akunina [59]

Answer:

1. 2³ × 2² = (2 × 2 × 2) × (2 × 2) = 23+2 = 2⁵

2. 3⁴ × 3² = (3 × 3 × 3 × 3) × (3 × 3) = 34+2 = 3⁶

3. (-3)³ × (-3)⁴ = [(-3) × (-3) × (-3)] × [(-3) × (-3) × (-3) × (-3)]

= (-3)3+4

= (-3)⁷

4. m⁵ × m³ = (m × m × m × m × m) × (m × m × m)

= m5+3

= m⁸

Step-by-step explanation:

exponential law

3 0
2 years ago
Explain how to find the middle quartile of a box-and-whisker plot.
Soloha48 [4]

Step-by-step explanation: The middle quartile or <em>second quartile</em> as I like to call it is the median of the entire data set. Remember that the median is the middle number when the data is written from least to greatest.

6 0
3 years ago
Which of the following numbers could not possibly be a​ probability? Justify your answer. 0.123 negative 0.577 0 What must be tr
dusya [7]

Answer:

First question: -0.577 cannot be a probability.

Second question: The number must be between 0 and 1, inclusive (D)

Third question: -0.577 cannot be a probability.

Step-by-step explanation:

A probability is a real number that is in the interval [0, 1]. Therefore, any number outside this range cannot be considered a probability. Under this premise:

First question: -0.577 cannot be a probability.

Second question: The number must be between 0 and 1, inclusive (D)

Third question: -0.577 cannot be a probability.

3 0
3 years ago
In a video game, a bird is flung on a sling shot and follows a parabolic path. The path of the bird can be modeled by the equati
umka21 [38]

9514 1404 393

Answer:

  3.61 seconds

Step-by-step explanation:

The bird starts 50 feet in the air, so will come down to a height of 40 feet after 3.61 seconds.

We want to solve h = 40.

  40 = -16t^2 +55t +50

  16t^2 -55t -10 = 0

  t = (55 +√(55^2 -4(16)(-10)))/(2(16)) = (55 + √3665)/32 ≈ 3.61060

The bird will be 40 ft above the ground the first time after about 3.61 seconds.

8 0
3 years ago
Other questions:
  • What is a stock index? a. The average change in a stock’s price over a given period. b. An indicator of market strength based on
    13·2 answers
  • Acme elementary school likes to keep the student to teacher ratio at 20 students for every teacher. if there are 213 students in
    13·2 answers
  • Order the fractions from least to greatest -2/5, -7/4, -3/5, -8/3
    11·2 answers
  • Can you please answer this for me?
    7·1 answer
  • A scuba diver dives 750 feet underwater, swims up 375 feet, and then swims down 225 feet. After all of that where is the diver a
    10·1 answer
  • Solve the inequality<br> <img src="https://tex.z-dn.net/?f=%20%5Cfrac%7Bx%2B1%7D%7Bx-8%7D%20%5Cleq%200%20" id="TexFormula1" titl
    5·1 answer
  • 5.23 - 2.1 using models or visuals?
    12·1 answer
  • Pls help me with this math question pls Pls​
    9·2 answers
  • PLEASE ANSWER ASAP FOR BRANLEST!!!!!!!!!!!!!!!
    12·1 answer
  • Select three ratios that are equivalent to 7: 6.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!