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Anarel [89]
3 years ago
7

The senior classes at High School A and High School B planned separate trips to the county fair. The senior class at High School

A rented and filled 5 vans and 6 buses with 393 students. High School B rented and filled 7 vans and 6 buses with 411 students. Each van and each bus carried the same number of students. Define two variables for this situation. Write a system of equations to represent this situation. How many students can a van carry? How many students can a bus carry?
Mathematics
1 answer:
kkurt [141]3 years ago
3 0

Answer:

Let v = no. of students in a van

b = no. of students in a bus

5v + 6b = 393                7v + 6b = 411

9 students in each van     58 students in each bus

Step-by-step explanation:

Let v = no. of students in a van

b = no. of students in a bus

        School A                      School B

(1)    5v + 6b = 393          (2)      7v + 6b = 411

Change all the signs  in (1) to get -5v - 6b = -393

Add that to (2)    7v + 6b = 411

                           <u>-5v - 6b = -393</u>

                            2v         = 18

                                  v = 9 students in each van

Substitute 9 in for v in (1) and we get 5(9) + 6b = 393

                                                             45 + 6b = 393

                                                                      6b = 348

                                                                        b = 58 students in each bus

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3 years ago
the product of two numbers is 7904, and the absolute value of one of the numbers is 247. Find two possible solutions for the oth
Nina [5.8K]

Two Possible solutions for the other number are -32 and 32.

<h3>What are absolute value of a number?</h3>

Absolute value describes the distance from zero that a number is on the number line, without considering direction.

Overall, To find the absolute value of a number :

Let we have any number n ( it can be positive/negative ).

so, Absolute value of 'n' will be | n | (mod of n) , means we have to take positive value of the given number.

For example: | -3 | = 3

| 4 | = 4

| -1000 | = 1000

Now, For absolute value -

For example: Absolute value of 29 is 29.

Absolute value of -56 is 56.

Absolute value of -1000 is 1000.

We have given the product of two numbers is 7904.

Let say we have number 'a' and 'b'.

so, here : a x b = 7904.        ------------ ( i )

The absolute value of one of the numbers is 247.

Let Absolute value of 'a' = 247

So the number 'a' can be either 247 or -247.

because absolute value of 247 is 247 and also absolute value of -247 is 247.

using equation ( i )

a x b = 7904

b = 7904 / a.

when a = 247

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when a = -247

b = - 32

Hence, Two Possible solutions for the other number are -32 and 32.

Learn more about "Absolute Values" from here: brainly.com/question/1301718

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Dada la ecuacion 25x2 + 4y2 = 100, determina las coordenadas de los vertices, focos, las longitudes de los respectivos ejes mayo
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Answer:

The given equation is

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To find its elements, we need to divide the equation by 100

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Where a^{2} =25 and b^{2}=4. Remember that the greatest denominator is a, and the least is b. So, we extract the square root on each equation.

a=5 and b=2.

In a elipse, we have a major axis and a minor axis. In this case, the major axis is vertical and the minor axis is horizontal, that means this is a vertical elipse.

The length of the major axis is 2a=2(5)=10.

The length of the minor axis is 2b=2(2)=4.

The vertices are (0,5);(0,-5) and (2,0);(-2,0).

Now, the main parameters of an elipse are related by

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Finally, the graph of the elipse is attached.

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