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cluponka [151]
3 years ago
14

Every evening Jenna empties her pockets

Mathematics
1 answer:
rodikova [14]3 years ago
3 0

Answer:

15

Step-by-step explanation:

1 dime = 10

1 quarter=25

x=number of coins - dimes

y= number of coins - quarters

x (10)+y(25)=10.25

x+y=50

x= 50-y

x(10)+y(25)=1025

(50-y)(10)+25y =1025

500-10y+25y=1025

500+15y=1025

15y= 1025 - 500

15y=525

y=525/15

y=35

x= 50-35=15

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Answer:

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Step-by-step explanation:

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8 0
3 years ago
for a trip, one high school rented and filled 2 vans and 8 buses with 176 students.another high school instead fit its 164 stude
vodka [1.7K]

Answer:

A bus carries 20 students while the van carries 8 students

Step-by-step explanation:

Let's assume that the number of students that the bus can carry is X And

The number of students that the van can very be y

From first statement,

8x + 2y = 176______ first equation

From Second statement,

7x + 3y = 164______ second equation

The above is a simultaneous equation and we will use the elimination method to solve for both x and y

But if we take a look at both equations,we will find out that we can't make use of the elimination method since the coefficients of both x and y aren't same in both equations.

What we have to do now is to multiply equation 1 by 3 and multiply equation 2 by 2 so as to get the coefficients of y in both equation to be the same.

Initially, both equation are

8x + 2y = 176____ first equation

7x + 3y = 164____ second equation

They will now be :

24x + 6y = 528(was multiplied by 3)

14x + 6y = 328(was multiplied by 2)

Now subtract equation 2 from 1 and we have

10x = 200

X = 20

Now substitute x = 20 in equation 1 above

8x + 2y = 176

(8 × 20) + 2y = 176

2y = 176 - 160

Y = 8

Remember that we assumed that the number of students that each bus carried was x and van was y,now we know the values of c and y to be 20 and 8 respectively.

Therefore, each bus carried 20 students and each van had 8 students on it

8 0
4 years ago
Read 2 more answers
What is 14x + 9y + 6x<br><br><br><br> fastfastfastfast
Fudgin [204]

Answer:

20x+9y

Step-by-step explanation:

add the numbers that have the same variable(x in this problem)this is also called combining like terms. Then put the other numbers that have different variables. hope this helped

4 0
3 years ago
231 is 75% of what number?
Margarita [4]
231 ------>  75
x ----------> 100

x= 100*231/75 =308
7 0
4 years ago
Read 2 more answers
Graph the image of this figure after a dilation with a scale factor of 2 centered at (2, 2).
kow [346]

Answer:

(-6,6), (0,12), (4,8)

Step-by-step explanation:

To dilate an object, we need to multiply the x and y values by the given scale factor.

In this case the scale factor is 2 --> 2(x, y)

Before-> After dilation

2(-3,3) = (-6,6)

2(0,6) = (0,12)

2(2,4) = (4,8)

Please leave a 'thanks' if this helps!

7 0
4 years ago
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