A class of 195 students went on a field trip. They took 7 vehicles, some cars and some buses. Find the number of cars and Numbers off buses they took if each car holds 5 student’s and each bus holds 45 students.

Answers

Answer 1

Answer:80

Step-by-step explanation:

Answer 2

Answer:

Number of cars=3

Number of buses=4

Step-by-step explanation:

Let the number of cars be x, and the number of buses be y.

x+y=7 (total number of vehicles) ---①

5x+45y=195 (total number of students) ---②

*each car holds 5 students, whereas each bus holds 45, which equals to 5x and 45y

From equation ①,

x=7-y ---③

Substitute ③ into ②

5(7-y)+45y=195

35-5y+45y=195

40y=195-35

40y=160

y=4

Therefore,

x+y=7

x=7-y

x=7-4

x=3


Related Questions

olve for x. -3x = -15 x = -45 x = 5 x = -5

Answers

Answer:

it 1/4

Step-by-step explanation:

i did the other anwser and it anwsered after i got it wrong

What is the solution set to the inequality (x-3)(x+5) ≤ 0

Answers

Answer: x less than or equal to 3, x less than or equal to -5.

Step-by-step explanation:

split into two

x-3<0 // x+5<0

x<3 // x<-5

Answer:

-5 ≤ x ≤ 3

Interval notation : [-5 , 3]

Step-by-step explanation:

Look at the photo below for the details.

:)

What is the median of the numbers below?

5,4,5,8,3,5,2

Answers

The median is the middle number. To find the median, put the numbers in order of least to greatest.

2,3,4,5,5,5,8

The middle number is the one that is the median. Because there are seven numbers, the exact number in the middle is 5, making it the median.

Answer:

5

Step-by-step explanation:

2,3,4,5,5,5,8

you must put them in order, and it will always be in the middle :)

can someone help me with this problem please

Answers

Answer:

Option C that is  [tex]x=4,DF=EG=15[/tex]  the right choice.

Step-by-step explanation:

Given,

A rectangle with the measures of its diagonal DF and EG.

Measure of diagonal DF = [tex]5x-5[/tex]

Measure of diagonal EG = [tex]x+11[/tex]

Note:Diagonal length of the rectangle are same.

So DF = EG

[tex]5x-5=x-11[/tex]

Subtracting [tex]x[/tex] and adding [tex]5[/tex] on both sides.

We have,

[tex]5x-x=11+5[/tex]

[tex]4x=16[/tex]

Dividing 4 both sides.

[tex]x=\frac{16}{4}=4[/tex]

So the value of [tex]x[/tex] is [tex]4[/tex].

Now plugging the value of [tex]x=4[/tex],we will find the numeric value of DF and EG.

DF = [tex]5x-5 =5(4)-5=15[/tex]

EG= [tex]x+11=4+11=15[/tex]

Both are equal DF = EG.

So x=[tex]4[/tex] and the length of diagonals are equal, DF = EG = [tex]15[/tex] unit.

Write the polynomial function, in standard form, that has zeros -3, 4, and 1.

Answers

Answer:

OPTION D

Step-by-step explanation:

Given the zeroes (roots) of a polynomial are: - 3, 4 & 1.

An [tex]$ n -degree $[/tex] polynomial has [tex]$ n - roots $[/tex] (zeroes). The converse is also true.

Here, we are given three roots of the polynomial. That means, the polynomial must be of third degree.

Also, (x - a) is a factor of the polynomial if and only if x = a is a root of the polynomial.

Here, -3, 4 & 1 are roots. So, the factors are: (x + 3), (x - 4) and (x - 1) .

Multiplying them will result in the polynomial.

[tex]$ (x + 3)(x - 4)(x - 1) $[/tex]

[tex]$ \implies (x^2 - 4x + 3x - 12)(x - 1) $[/tex]

[tex]$ \implies x^3 -x^2 - 4x^2 + 4x + 3x^2 - 3x - 12x + 12 $[/tex]

Simplifying, we get: [tex]$ \textbf{x}^\textbf{3} \textbf{-} \textbf{2x}^\textbf{2} \textbf{-} \textbf{11x} \textbf{+} \textbf{12}$[/tex]

Hence, OPTION D is the right answer.

Could someone explain to me how to solve this

? I got (-1,2) and it said I was wrong.

never mind found out why, i was supposed to plug in x for one of the equations to find y!

Answers

The ordered pair is (–1, –2)

Solution:

Given system of linear equations are

4x –7y = 10 – – – – (1)

3x + 2y = –7 – – – – (2)

To solve this by elimination method.

First multiply equation (1) by 3 and then multiply equation (2) by 4.

(1) × 3 ⇒ 12x –21y = 30 – – – – (3)

(2) × 4 ⇒ 12x + 8y = –28 – – – – (4)

Subtract equation (4) from equation (3), we get

⇒ 12x –21y – (12x + 8y) = 30 – (–28)

⇒ 12x –21y – 12x – 8y = 30 + 28

Combine like terms together.

⇒ 12x – 12x –21y  – 8y = 30 + 28

⇒ –29y = 58

Divide both sides by –29, we get

y = –2

Substitute y = –2 in equation (1), we get

(1) ⇒ 4x –7y = 10

⇒ 4x – 7(–2) = 10

⇒ 4x + 14 = 10

⇒ 4x = 10 – 14

⇒ 4x = –4

Divide both side by 4, we get

x = –1

Hence the ordered pair for the given system of equations is (–1, –2).

Identify an equivalent fraction to 8/6. 6/8. 8/3. 4/3. 10/8.

Answers

4/3. 3/4. 16/6. 12/9. 5/3.

Mr. Phillips is mixing paint for his art
class. How many 6-ounce bottles can
he fill with the quantities of paint shown
at the right? Explain.
Paint
-64 ounces of blue
12 ounces of yellow
-32 ounces of white

Answers

Answer:

Mr. Phillips can fill 18 bottles of paint

Step-by-step explanation:

The first thing you should do in this case is to know how many ounces of paint you have:

Painting = 64 + 12 + 32 = 108

Then, to calculate the number of 6-ounce bottles you must divide the total number of ounces by 6:

n = (108) / (6) = 18

please help urgent !!!!

Answers

Answer:

50

Step-by-step explanation:

X over 5 equals 15 what does x equal

Answers

answer

75

Step-by-step explanation:

x over 5 = 15 is 75

this meanstitute x with 75 is a equation she's both sides equal we can conclude that x = 75 is the correct solution to the equation x over 5=15

expression show the sum of 5 less than y and the product of 3 and g

Answers

The expression that shows the sum of 5 less than y and the product of 3 and g is (y - 5) + 3g

Step-by-step explanation:

Let us revise some important words to translate a statement to algebraic expression

The sum ⇒ addThe product ⇒ multiplyThe quotient ⇒ divideLess than ⇒ subtractMore than add

∵ 5 less than y

- That means subtract 5 from y

∴ 5 less than y = y - 5

∵ The product of 3 and g

- That means multiply g by 3

∴ The product of 3 and g = 3g

∵ The sum of 5 less than y and the product of 3 and g

- That means add (y - 5) and 3g

∴ the expression = (y - 5) + 3g

The expression that shows the sum of 5 less than y and the product of 3 and g is (y - 5) + 3g

Learn more:

You can learn more about the expressions in brainly.com/question/3638399

#LearnwithBrainly

The yearbook club had a meeting. The meeting had 12 people, which is two-thirds of the club. How many people are in the club?
people

Answers

Answer:

18 people

Step-by-step explanation:

HELP

Joy needs 8 feet of fabric for a project she is working on, but the store only sells the fabric in meters. One meter of fabric costs $1.15. How much will the fabric cost?

[1 ft = 0.305m]

$9.20
$2.12
$2.81
$30.16

Answers

The fabric cost is $2.81.

Given that,

Joy needs 8 feet of fabric for a project she is working on, but the store only sells the fabric in meters.

One meter of fabric costs $1.15.

We have to determine,

How much will the fabric cost?

According to the question,

Joy needs 8 feet of fabric for a project she is working on, but the store only sells the fabric in meters.

One meter of fabric costs $1.15.

Then,

The fabric cost = one meter fabric cost × fabric measurement

The fabric cost = 8 × $1.15

The fabric cost = 9.20 feet

The value of [1 ft = 0.305m],

Therefore,

The fabric cost = 9.20 × 0.305 m = $2.81

Hence, The fabric cost is $2.81.

To know more about Equation click the link given below.

https://brainly.com/question/24065247

Final answer:

To determine the cost of 8 feet of fabric when the store sells by the meter, one must convert feet to meters and then multiply by the price per meter, resulting in approximately $2.81.

Explanation:

The student, Joy, needs to convert feet to meters in order to purchase fabric. Since 1 foot is equal to 0.305 meters, she needs to convert 8 feet to meters by multiplying 8 feet by 0.305. This results in approximately 2.44 meters of fabric needed. Given that one meter of fabric costs $1.15, we multiply 2.44 meters by $1.15 per meter to find the total cost. Therefore, the fabric will cost approximately $2.81.

Mason opens a savings account by making a $165.85 deposit. Every week, he deposits another $20.50 in the account. The following expression shows the amount of money that will be in the account x weeks after Mason opens it.

165.85 + 20.5x



How much money will be in the account after 10 weeks?

Answers

Answer:

$370.85

Step-by-step explanation:

sub the 10 for the x

370.85

Answer:

First multiply 10 by 20.5 because x represents the number of weeks.  You get 205.  Next add 165.85 to that and you get 370.85 as your final answer.  

What is the sum of x,three-fourths x, and 90% of z

Answers

Final answer:

The sum of x, three-fourths x, and 90% of z is x + (3/4)x + 0.9z.

Explanation:

The sum of x, three-fourths x, and 90% of z is calculated by adding these three terms together. Let's break it down:

x is simply x, no changes or calculations needed.

Three-fourths x can be written as (3/4)x.

90% of z can be written as 0.9z.

Therefore, the sum of x, three-fourths x, and 90% of z is x + (3/4)x + 0.9z.

Learn more about Sum of Variables here:

https://brainly.com/question/31807896

#SPJ12

What is the answer to 7=-3c-2

Answers

Answer:

c= -3

Step-by-step explanation:

Which part of the angle is the vertex?
A. Point X
B. YX
C. YZ
D. Point Y

Answers

Is there a graph?

If you have more info you will get the best answer.

Answer: POINT Y :))

Explanation in the picture below :) hope i helped!!

The Washington's by a studio apartment for 240,000 they pay a down payment of 60000 their down payment is what percent of the purchase price

Answers

Answer:

25%

Step-by-step explanation:

Given:

The price of the studio apartment = 240,000

Down payment = 60,000

We need to find the percentage of down payment.

Solution:

Using percentage formula.

[tex]Percentage = (\frac{Value}{Total\ value})\times 100[/tex]

Here value = Down payment

Total value = Price of the apartment

Now we substitute Down payment and Price of the apartment in above formula.

[tex]Percentage = (\frac{60000}{240000})\times 100[/tex]

[tex]Percentage = \frac{6\times 100}{24}[/tex]

[tex]Percentage = \frac{600}{24}[/tex]

[tex]Percentage = 25\%[/tex]

Therefore, Down payment is 25% of the purchase price.

What expression is equal to 5(3x-2)

Answers

Answer: 15x-10

Step-by-step explanation:To solve this problem you have to do the distributive property. You must do 5 times 3x and 5 times -2. 5 times 3x is 15x and 5 times -2 is -10. This means the answer is 15x-10.

Answer:

Step-by-step explanation:

5(3x - 2)

Opening bracket

= 5(3x) - 5(2)

= 15x - 10

a sum expression that equals -3/4

Answers

Answer:

2 1/4 - 3 = -3/4 can be a simple equation.

Which expressions are equivalent?

A. 1/5 k - 2/3 j and - 2/3 j + 1/5 k

B. 1/5 k - 2/3 j and - 1/5 k + 2/3 j

C. 1/5 k - 2/3 j and 1/5 j -2/3 k

D. 1/5 k - 2/3 j and 2/3 j - 1/5 k

Answers

Answer A is correct.
The two values on the right side are (+1/5k) and (-2/3j), so the left side must also have a -2/3j and a +5/3k

Answer: A

Step-by-step explanation:

For the function f(x) = 3(x − 1)2 + 2, identify the vertex, domain, and range.
a- The vertex is (1, 2), the domain is all real numbers, and the range is y ≥ 2.
b- The vertex is (1, 2), the domain is all real numbers, and the range is y ≤ 2.
c- The vertex is (−1, 2), the domain is all real numbers, and the range is y ≥ 2.
d- The vertex is (−1, 2), the domain is all real numbers, and the range is y ≤ 2.

Answers

See picture reply for solution steps.

Final answer:

The vertex of the function f(x) = 3(x − 1)² + 2 is (1, 2), the domain is all real numbers, and the range is y ≥ 2, Option A is correct in the given options.

Explanation:

The vertex of the function f(x) = 3(x − 1)² + 2 is (1, 2), because the vertex form of a quadratic function is given by f(x) = a(x − h)² + k, where (h, k) is the vertex. In this case, a = 3, h = 1, and k = 2. The domain of the function is all real numbers, because there are no restrictions on x. The range of the function is y ≥ 2, because the minimum value of the function is 2 (occurring at the vertex) and y can be any value greater than or equal to 2.

100 Points! What are the classifications of each system?

Drag the answer into the box to match each system.

Answers

Answer:

Part 1) Is a inconsistent system

Part 2) Is a consistent independent system

Part 3) Is a consistent dependent system

see the attached figure

Step-by-step explanation:

we know that

If a system has at least one solution, it is said to be consistent .  

If a consistent system has exactly one solution, it is independent .  

If a consistent system has an infinite number of solutions, it is dependent

If a system not have solution, it is said to be inconsistent

Part 1) we have

[tex]x+5y=-2\\x+5y=4[/tex]

This system of linear equations has two parallel lines (their slopes are equal) with different y-intercept

so

The lines don't intersect

The system has no solution

therefore

Is a inconsistent system

Part 2) we have

[tex]y=3x+4\\-2x+y=4[/tex]

we know that

If two lines have different slopes, then the lines intersect at one point and the system of equations has one solution

In this problem, the lines have different slopes (m=3 and m=2)

so

The lines intersect at one point

The system has one solution

therefore

Is a consistent independent system

Part 3) we have

[tex]3x+y=4[/tex] ----> equation A

[tex]-6x-2y=-8[/tex] ----> equation B

Multiply equation A by -2 both sides

[tex]-2(3x+y)=-2(4)[/tex]

[tex]-6x-2y=-8[/tex] ----> equation C

Compare equation B and equation C

Are identical lines

so

The system has infinity solutions

therefore

Is a consistent dependent system

Answer:

1) inconsient system

2) consient system

3) consient system

See attached photo!! Please help Asap!!! CORRECT ANSWERS ONLY!! THANKS IN ADVANCE!!
Which construction might this image result from?


A.
construction to copy a line segment
B.
construction of a perpendicular bisector
C.
construction of a perpendicular to a line through a given external point

Answers

Answer:

  C.  construction of a perpendicular to a line through a given external point

Step-by-step explanation:

The crossing arcs below the line are equidistant from the marked points on the line (J and K), and those are equidistant from point A. If we call the point of intersection of those crossing arcs point X, we know that AX is a perpendicular bisector of JK.

However, J and K are not part of the "given" of this construction. Rather, they are the result of the first step of drawing arcs centered at A. So the fact that AX bisects JK is not important. What is important is that AX is perpendicular to the line and goes through the given point A.

This is a partially-completed construction of a perpendicular to a line through the given external point A.

For the given interval, is the function increasing or decreasing? ​

Answers

Answer:

increasing

Step-by-step explanation:

Find domains of the following expressions.
sqrt(2-3x)+sqrt(5-x)

Answers

Find the domain by finding where the expression is defined.

Interval Notation:

Interval Notation: ( − ∞ , 2 3 ] (-∞,23]

Set-Builder Notation: { x ∣ ∣ ∣ x ≤ 2 3 }

Answer: (-∞ , 2/3)

Step-by-step explanation:

To find the domain of a radical , we will set the function inside the radical greater than or equal to zero , that is

2 - 3x ≥ 0

2  ≥ 3x

2/3  ≥ x

that is : x ≤ 2/3

Also

5 - x  ≥ 0

5  ≥ x

That is : x ≤ 5

Therefore , the domain of the expression  is  x ≤ 2/3 and  x ≤ 5

What is the sum of 1/3 and 1/6

Answers

The sum of 1/3 plus 1/6 is 1/2

A car rental firm has the following charges for a certain type of car: $25 per day with 100 free miles included, $0.15 per mile for more than 100 miles. Suppose you want to rent a car for one day, and you know you'll use it for more than 100 miles. What is the equation for relating the cost y to the number of miles x that you drive the car?

Answers

y = 25 + 0.15x is the equation for relating the cost y to the number of miles x that you drive the car

Solution:

Let "y" be the total cost of car rental

Let "x" be the number of miles you drive the car for more than 100 miles

A car rental firm has the following charges for a certain type of car:

$25 per day with 100 free miles included, $0.15 per mile for more than 100 miles

Suppose you want to rent a car for one day, and you know you'll use it for more than 100 miles

Therefore,

Car is rented for one day

You will use it for more than 100 miles

Therefore, equation is framed as:

Total cost = $ 25 + 0.15(number of hours)

[tex]Total\ Cost = 25 + 0.15x\\\\y = 25 + 0.15x[/tex]

Thus the equation for relating the cost y to the number of miles x that you drive the car

A new computer system sells for approximately $2000 and depreciates at the rate of $500 per year.

Answers

what are you asking

Step-by-step explanation:

Graph the linear equation.

4x+6y=−12

Answers

Answer:

Step-by-step explanation:

Answer:

The points are (-3,0) and (0,-2)

Step-by-step explanation:

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