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jenyasd209 [6]
3 years ago
11

81 is 37.5% of what number

Mathematics
1 answer:
aksik [14]3 years ago
6 0
37.5% of n is 81
0.375n=81
n=216
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The sum of two numbers is 56. the sum of the smaller and 5 times the larger is 192. find the numbers.
Kamila [148]

Let the numbers = x,y

x+y = 56      1st eqn

x+5y = 192   2nd eqn

56-y+5y = 192

4y = 136

y = 34

substitute that in 1st eqn, x = 56-34 = 22

So, smaller number = 22 & Larger number = 34



3 0
3 years ago
The ratio of the number of boys to the number of girls at Liam's school is 4:5. There are 270 students at his school. Statement
Aleks04 [339]

Answer:

"statement 1: The number of boys at the school is \frac{4}5 of the number of girls." is true.

Step-by-step explanation:

Given:

Ratio of Number of boys to the number of girls = 4 : 5

Total number of students = 270

To find:

Number of boys in terms of number of girls = ?

Solution:

As per given statement,

Let, Number of boys = 4x

Let, Number of girls = 5x

Total number of students = Number of boys + Number of girls = 270

\Rightarrow 4x+5x =270\\\Rightarrow 9x=270\\\Rightarrow \bold{x  = 30}

Therefore, number of boys = 4 \times 30 = 120

And, number of girls = 5 \times 30 = 150

As per Statement 1:

Finding \frac{4}5 of the number of girls:

\dfrac{4}{5}\times 150 = 4 \times 30 = 120 = Number of boys.

Finding \frac{4}9 of the total number of students:

\frac{4}{9}\times 270= 4 \times 30 = 120 = Number of boys.

Number of boys is equal to \frac{4}9 of total number of students.

So, "statement 1: The number of boys at the school is \frac{4}5 of the number of girls." is true.

6 0
3 years ago
A researcher compared the heights and shoe sizes for 50 men, selected at random. The equation shown describes a line of best fit
tester [92]
¡Hola! Espero que si puedes leer esto, estás teniendo un gran día, lamento mucho que no puedas resolver esta pregunta, pero en realidad, ¡yo tampoco! gemelos !! ahora diré algunos números aleatorios para que parezca la respuesta, lo siento mucho de antemano si no obtiene la respuesta real. x multiplicado por y te dará 329, que divides por 3 para obtener tu respuesta. no me escuches, no tengo idea de lo que estoy hablando, pero espero que tengas un día bendecido, Dios los bendiga ♥ ️
3 0
3 years ago
Joshua spends 25 minutes of each day reading. Let d be the number of days that he reads, and let m represent the total minutes o
zavuch27 [327]

Answer:

The number of days are independent and the total number of minutes are dependent.

The required model for the situation is m=25d

The table is shown below:

Step-by-step explanation:

Consider the provided information.

Joshua spends 25 minutes of each day reading. Let d be the number of days that he reads, and let m represent the total minutes of reading.

We need to determine which variable is independent and which is dependent.

Here, the number of days are independent and the total number of minutes are dependent.

If he spends 25 minutes each day. So the total number of minutes in d days are:

m=25d

The required model for the situation is m=25d

Now make the table which showing the number of minutes spent reading over 7 days.

Substitute the value of d from 1 to 7 in m=25d

Number of days(D)        Minutes(M)

          1                                 25

          2                                 50

          3                                 75

          4                                 100

          5                                 125

          6                                 150

          7                                 175

3 0
3 years ago
Todd is 3 years older than his brother Jack. If Jack is x years old and Todd is y years
o-na [289]
The answer to this would be 25.

Explanation:If Todd is three years older than jack you will have to subtract the three from that 28 to get your answer.
4 0
4 years ago
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