Mathematics High School

1. Kristen spent $131 on shirts at Target last week. She bought some fancy shirts for
$28 each and then some plain t-shirts for $15 each. If she bought a total of 7 shirts,
then how many of each type of shirt did she buy?
problem #1
problem #2

1. Kristen Spent $131 On Shirts At Target Last Week. She Bought Some Fancy Shirts For$28 Each And Then

Answers

Answer 1

Answer:

Kristen bought 2 fancy shirts and 5 plain t-shirts.

Step-by-step explanation:

Given that,

Kristen spent $131 on 7 shirts.

Cost of one fancy shirt = $28

Cost of one plain t-shirt = $15

Let,

x be the number of fancy shirts

y be the number of plain t-shirts

x+y = 7       Eqn 1

28x+15y=131    Eqn 2

Multiplying Eqn 1 by 15

15(x+y=7)

15x+15y=105    Eqn 3

Subtracting Eqn 3 from Eqn 2

(28x+15y)-(15x+15y)=131-105

28x+15y-15x+15y=26

13x=26

Dividing both sides by 13

[tex]\frac{13x}{13}=\frac{26}{13}\\x=2[/tex]

Putting x=2 in Eqn 1

2+y=7

y=7-2

y=5

Hence,

Kristen bought 2 fancy shirts and 5 plain t-shirts.

Related Questions

PLEASE HELP THANK YOU I'LL MARK YOU BRAINLIEST.!
Mr. Duncan earns an hourly wage for every hour he works. Last week, he ared $663.85 and worked 35.5 hours. How much money does Mr. Duncan earn per hour.

663.85 divided by 35.5 is 18.70.
im just stuck between the answer being $18 dollars or $18.70 dollars per hour, because it says per Hour not Per HOur and a half. lol if that makes sense.... ye im not laughing at all and i talk to much

Answers

Answer:

18.70 and it would be per hour

Step-by-step explanation:

which function has a greater rate of change?

Answers

Answer:

Function A has a rate of change of 5 and Function B has a rate of change of 4.5. Thus, Function A has a higher rate of change

Step-by-step explanation:

19.5 is what percent of 150?

Answers

Answer:

13

Step-by-step explanation:

Please mark brainlliest.

Answer:

13%

Step-by-step explanation:

19.5/150=0.13 = 13%

Simplify the expression by combining like terms. -9x + 3 - 5x + 8*
Please help

Answers

-14x+11

I'm not sure what the little asterisk * is for, so if I interpreted the question wrong just leave a comment :)

Simplify (3 x + 5) + (2 x - 9) - (4 x + 3).

9x - 1
-9x - 1
-x - 7
x - 7

Answers

Answer:

x - 7 , is the answer

Step-by-step explanation:

Step-by-step explanation:

[tex]\tt{(3x+5)+(2x-9)-(4x+3) }[/tex] ⠀

[tex]\tt{3x+5+2x-9-4x-3 }[/tex] ⠀

[tex]\tt{5x-4x+5-12 }[/tex] ⠀

[tex]\tt{x-7 }[/tex] ⠀

PLEASE HELP!!! EMERGENCY How many y-values are there for each x-value in the function represented by the graph?
a. 0
b. 1
c. 2
d. indefinitely many
(I think it’s either b or d but I never learned this before)

Answers

Answer:

it's 1!!

Step-by-step explanation:

PLZZZZ ANSWER ILL GIVE BRAINLIST PLZZZZ

Answers

Answer:

first one looks correct

Mark has a piece of wood that is 11 1/4 ft long. He cuts the wood into as many 2 1/2 ft pieces as he can. How long is the leftover piece of wood?

Answers

Answer:

1 1/4 ft

Step-by-step explanation:

First lets convert the fractions to decimals so it will be easier to divide. We need to divide to know how many leftover pieces of wood are there. 11.25 (11 1/4) divide by 2.5 (2 1/2) is 4 with the reminder of 1.25. So there are 4 (2 1/2 ft) wood pieces and 1 1/4 ft leftover piece of wood.

Answer:

Step-by-step explanation:

Please help meee (20 points)

Answers

Answer:

the first one is -7x-6

the second one is -x/4-x/2

Step-by-step explanation:

Answer:

5. (-2x+5) - (6x+4) + (x-7) = - 7x - 6

6. - 3x/4 - 5/6

Step-by-step explanation:

                 

The distance between 2 cities is 7,200 miles. How long will it take a plane that flies at 600 miles h to travel between the 2 cities?​

Answers

Answer:

It would be 12 hours for the plane to go from a city to another/the other city

Step-by-step explanation:

(Distance=speed x time, Speed =distance ÷ time and Time =distance ÷ speed)

If you would apply the formula for time then

7,200m ÷ 600m/h = 12 hours

The plane flying at 600 miles per hour can cover a distance of 7200 miles in 12 hours.

What is a unitary method?

A unitary method is a mathematical way of obtaining the value of a single unit and then deriving any no. of given units by multiplying it with the single unit.

Given, The distance between 2 cities is 7,200 miles and a plane can fly 600 miles per hour.

∴ The time required to cover the distance of 7200 miles is,

= (7200/600) h.

= 72/6 h.

= 12 h.

learn more about the unitary method here :

https://brainly.com/question/28276953

#SPJ2

Rhona can run at a rate of 6 miles per hour. Mira can run 8 miles in 6 hours. Who sis the faster runner

Answers

Answer:

Mira

Step-by-step explanation:

Rhona runs a measly 6 mph, nd Mira runs about 1.3. You gotta divide 8 by 6.

OR,

u can make common denominators. Make Rhona's 1 hour 6 hours, then multiply 6 by 6. Therefore, in 6 hours, Rhona runs 36 miles.

Convert 0.3 to a fraction and percent.

Answers

Answer: 3/10 and 30 %

Step-by-step explanation:

3/10 and 30 %

Answer:

3/10   30%

Step-by-step explanation:

There are 2.54 centimeters in 1 inch. There are 100 centimeters in 1 meter.
To the nearest meter, how many meters are in 160 inches?

Answers

Answer:

About 4.06, so your answer is 4 meters.

Answer:

406.4

Step-by-step explanation:

.  160 x 2.54 = 406.4 meters in 160 inches.

.  To check you can do division.

.  406.4 divided by 2.54 = 160 inches.

Hope this help!

Have a great day!

3(2x + 4) = 72

What’s x

Answers

Answer: x = 6

Step-by-step explanation:

(3)(2x) = 6x

(3)(4) = 12

12-12 cancels out

72-12 = 60

6x/6 cancels the 6 out

60/6 = 6

x = 6

I really need help guys I'm so silly
[tex] - 5 \times 4[/tex]
​

Answers

Answer:

-20

Step-by-step explanation:

First, you just have to take off the negative sign:

[tex]5 \times 4[/tex]

Then, multiply:

[tex]5 \times 4 = 20[/tex]

Lastly, put the negative sign back on the 20:

[tex]-20[/tex]

That's your answer!

Courses
Search
Model with one-step equations and solve
Eva and Jamir like to bake cookies. Eva baked 24 chocolate chip cookies, and Jamir baked p peanut butter
cookies. Together they baked a total of 56 cookies,
Write an equation to describe this situation.
How many cookies did Jamir bake?

Answers

Answer:

Step-by-step explanation:

1) 24+P=56

You then would subtract 24 from the left and move it to the 56 side of the equation.

2)P=56-24

You then take 56-24=32.

3) P=32

Jace ran 22 miles. leah ran for y minutes. Jace ran twice as long A Leah. How long did leah ran?

A 24 minutes
B 20 minutes
C II minutes
D 44 minutes​

Answers

Answer:

C. 11min

Step-by-step explanation:

If he ran twice as much as Leah u divide 22 by 2 and get 11 I am sorry if this is wrong.

Either C or D. Because 22 times 2 is 44 but 22 divide by two is 2 is 11 I’m not sure it’s one of those two.

I’ll mark u as brainliest

Answers

Answer: C step by step explanation:

Suppose Cathy paid $32 for a sweater that was 20% off. What was the original price of the sweater?

Answers

Answer:

160 dollars

Step-by-step explanation:

20/100=32/x

let x= original price

20x =32x100

x=32x100/20

x=160 dollars

Answer:

$160

Step-by-step explain nation:

I hope this helps since you helped me, I  will help you.

which slice would be bigger: 1/4 of a 12 inch pizza or 1/8 of an 18 inch pizza​

Answers

Answer: 1/4 of a 12 inch pizza

Step-by-step explanation: hope this helps :)

Answer:

1/4 of a 12 inch pizza is bigger.

Step-by-step explanation:

1/4 of 12 inches equals 3 inches.

1/8 of 18 inches equals 2.25 inches.

This makes 1/4 of a 12 inch pizza bigger.

PLEASE HELP FAST!!! How many solutions does this system have?

Y=3/4x+-5
-3x+4y=-20


Which one is it?
A. One
B. Two
C. An infinite number
D. No solution

Answers

Step-by-step explanation:

y=3/4x+(-5)-4x+4(3/4x+-5)=-20

-4x+3x-20=-20

-x=-20+20

-x=0

x=0

x=0 in y=3/4x-5

y=3/4×{0}-5

y=-5

I'LL MARK UR ANSWER BRAINLIST!!

2. How can we use the distributive property to solve 41* 45? (Please show work, and do not just provide a final answer).​

Answers

Answer: =1845

Step-by-step explanation: hope this help

what fraction is shown on the number line?

Answers

Answer:

3/4 or c

Step-by-step explanation:

Answer:

3/4 or c

Step-by-step explanation:

what is the value of x that makes the equation true.
please help!​

Answers

Answer:

If you plug in 15. it makes the statement true

Step-by-step explanation:

x-5=10

x=15

PLEASE ANSWERR THANK YOUU IT WOULD BE REALLY APPRECIATED

when is the statement "the quotient of a nonzero integer and its opposite is -1" true?

Answers

Answer:

This is like asking x/-x = -1, where x∈N.

No matter what number you choose that is a nonzero number, negative or positive when divided by its negated self will always be -1. Therefore this statement is always true.

what is 22% of 150
plz help me anser

Answers

33.

Explaination: the “%” essentially means /100. So you can find your answer by doing 150 x 22/100

Answer:

Itis 11

Step-by-step explanation:

0.22 times 50=11

Find the perimeter of AABC.
B
5x-19
2x +11
А
16
10
0 31
0 47
78

Answers

Answer:

78

Step-by-step explanation:

Since the base angles are congruent, then the triangle is isosceles and

AB = BC , that is

5x - 19 = 2x + 11 ( subtract 2x from both sides )

3x - 19 = 11 ( add 19 to both sides )

3x = 30 ( divide both sides by 3 )

x = 10

Then

AB = BC = 2x + 11 = 2(10) + 11 = 20 + 11 = 31

Thus

perimeter = 31 + 31 + 16 = 78

Answer: 78

Step-by-step explanation:

A bag contains 30 marbles. There are 7 blue, 4 green,
7 red, 6 yellow, and 6 black marbles. Without looking,
Tarek reaches into the bag and draws one marble.
What is the probability he draws a black marble?

Answers

Answer: 1/5

Step-by-step explanation: it it trust me

8 – 2x =
Helpppo pleaseee

Answers

This proplem is wrong there is a variable and no answer

please help ssssssssss
​

Answers

the answer would be x = 1

Answer:

x = 1

Step-by-step explanation:

1/2(8x-6) = -1/3(9x-12)   distribute

4x-3 = -3x+4                 add 3x to both sides

7x-3 = 4                        add 3 to both sides

7x = 7                            divide by 7 on both sides

x = 1

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