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2 years ago

N his road trip, Leon stops to refuel and get some snacks. He has the following purchases:

Mathematics

1 answer:

tresset_1 [31]2 years ago

3 0

Answer:

C. Paid $2.60 too much

Step-by-step explanation:

Gas 12 x 2.89 = 34.68

granola 2 x 1.59 = 3.18 x 1.075 = 3.4185

apple .89 x 1.075 = 0.95675

vitamin water 2 x 1.39 = 2.78 x 1.075 = 2.9885

34.68
3.4185
0.95675
+ 2.9885
---------------------
$42.04

$44.64
- $42.04
---------------------
$2.60

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notka56 [123]

Answer:

Step-by-step explanation:

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2 years ago

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Fiona is trying to prove that a pair of expressions are equivalent by using substitution. Which pair of expressions has the same

fiasKO [112]

Missing Part of the Question

3 (4 - y) -7 ; 5 + 3y

9 + y + 4y - 2 - 3y; -2y + 7

5 + y - 2 - 6y + y; 8y + 3

2y + 7 + y - 2 + y; 4y + 5

Answer:

2y + 7 + y - 2 + y; 4y + 5

Step-by-step explanation:

Given

y = 3

Required

Which pair of expression are equal

To get the pair of expression that are equal; we simply substitute 3 for y in each of the expressions

3 (4 - y) -7 and 5 + 3y

Substitute 3 for y in 3 (4 - y) -7

This gives 3(4 - 3) -7

= 3(1) - 7

= 3 - 7

= -4

Then Substitute 3 for y in 5 + 3y

This gives 5 + 3(3)

= 5 + 9

= 14

-4 and 14 are not equal

---------------------------------------------------------------------------------------

9 + y + 4y - 2 - 3y; -2y + 7

Substitute 3 for y in 9 + y + 4y - 2 - 3y

This gives 9 + 3 + 4(3) - 2 - 3(3)

= 9 + 3 + 12 - 2 - 9

= 13

Then Substitute 3 for y in -2y + 7

This gives -2(3) + 7

= -6 + 7

= 1

13 and 1 are not equal

---------------------------------------------------------------------------------------

5 + y - 2 - 6y + y; 8y + 3

Substitute 3 for y in 5 + y - 2 - 6y + y

This gives 5 + 3 - 2 - 6(3) + 3

= 5 + 3 - 2 - 18 + 3

= -9

Then Substitute 3 for y in 8y + 3

This gives 8(3) + 3

= 24 + 3

= 27

-9 and 27 are not equal

---------------------------------------------------------------------------------------

2y + 7 + y - 2 + y; 4y + 5

Substitute 3 for y in 2y + 7 + y - 2 + y

This gives 2(3) + 7 + 3 - 2 + 3

= 6 + 7 + 3 - 2 + 3

= 17

Then Substitute 3 for y in 4y + 5

This gives 4(3) + 5

= 12 + 5

= 17

17 and 17 are equal

Hence, Option D is correct

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2 years ago

Carrie gave her hairstylist a $4.20 tip. The tip was 15% of the cost of the haircut. Write an equation to find h, the cost of th

Alona [7]

Answer:

Step-by-step explanation:

you could wright the equation like 15/100=4.20/x

All I did is 100 divided by 15, which is 6.6666667, and then multiply that number by 4.20.

I hope this helped you!

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1 year ago

Sarawong's school is selling tickets to the annual talent show. On the first day of ticket sales the

SIZIF [17.4K]

Answer:

Price of the adult ticket is $13

Price of the child ticket is $3

Step-by-step explanation:

Lets x be the adult ticket and y be the child ticket.

Given:

School sold 14 adult tickets and 14 child tickets for a total of $224, so the first equation is.

$14x+14y=224$ -------------(1)

And the school took in $44 on the second day by selling 2 adult tickets and 6 child tickets, so the second equation is.

$2x+6y=44$ ---------------(2)

We find the price of an adult ticket and the price of a child ticket by solving above system of equation.

Now, equation 2 multiplied by 7.

$7(2x+6y=44)$

$14x+42y=308$ ---------(3)

Now, equation 1 subtracted by equation 3.

$14x+42y=308$

$14x+14y=224$

-______________

14x is cancelled in both equations, so we get the equation.

$28y=84$

$y=\frac{84}{28}$

y = 3

Now, we substitute y = 3 in equation 2.

$2x+6(3)=44$

$2x+18=44$

$2x=44-18$

$2x=26$

$x=\frac{26}{2}$

x = 13

Therefore, the price of the adult ticket is $13 and the price of the child ticket is $3.

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2 years ago

First person to respond will be marked brainly

vaieri [72.5K]

Answer:

1.) V=πr2h=π·6.52·16≈ 2123.71663, rounded= 2123.72

2.)V=πr2h=π·22·3≈37.69911, rounded= 37.80, or 37.8

3.) V=πr2h=π·12·3≈9.42478, rounded= 9.42

4.)70.69

5.)V=πr2h=π·3.82·3≈136.09379, rounded= 136.09

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2 years ago