A store sells hardcover books for $8 and paperback books for $5. You buy 7 books, represented by the equation x + y = 7, where x is the number of hardcover books and y is the number of paperback books. The equation 8x + 5y = 44 represents the total cost. How many of each type of book did you buy?

Answers

Answer 1

Answer:

You bought 3 hardcover books and 4 paperback books.

Step-by-step explanation:

8×3+5×4=44


Related Questions

Please help me complete this !! 12points

Answers

Answer:

1.

x1=1

x2=3

y1=5

y2=1

midpoint= (x1+x2/2, y1+y2/2)=(1+3/2,5+1/2)=(2,3)

2.

x1=2

x2=4

y1=4

y2=6

midpoint= (x1+x2/2, y1+y2/2)=(2+4/2,4+6/2)=(3,5)

3.

x1= -2

x2=4

y1=4

y2= -6

midpoint= (x1+x2/2, y1+y2/2)=(-2+4/2,4-6/2)=(1,-1)

4.

x1=0

x2=0

y1=3

y2=5

midpoint= (x1+x2/2, y1+y2/2)=(0/2,3+5/2)=(0,4)

5.

x1= -2

x2=2

y1= -6

y2=6

midpoint= (x1+x2/2, y1+y2/2)=(-2+2/2,-6+6/2)=(0,0)

6.

x1=1

x2=4

y1=4

y2=5

midpoint= (x1+x2/2, y1+y2/2)=(1+4/2,4+5/2)=(5/2,9/2)

7.

x1=-3

x2=-4

y1=5

y2=5

midpoint= (x1+x2/2, y1+y2/2)=(-3-4/2,5+5/2)=(-7/2,5)

8.

x1=5

x2= -4

y1=2

y2=6

midpoint= (x1+x2/2, y1+y2/2)=(5-4/2,2+6/2)=(1/2,4)

3(-1 - x) < -20 - 3x
on a number line

Answers

Answer:

[tex] - 3 - 3x \: < \: - 20 - 3 \\ - 3x < - 20 - 3 + 3 \\ - 3x < - 20 \\ x > - 20 \div 3[/tex]

Find the GFC of 16 and 80

Answers

Answer:

It is 16

Step-by-step explanation:

Hope this helped have an amazing day/month/year!


What is the slope of the line shown below?

(3,9)

(-4,2)

Answers

Answer:

the slope of the line shown below is 1.

how do you solve this
(-4) + (+6)

Answers

Answer:

2

Step-by-step explanation:

-4+6=

6-4=

2

The answer is positive 2

PLEASE PLEASE HELP I STG IVE BEEN ASKING THE SAME QUESTIONS FOR SO LONG AND NOONES ANSWERING ITS DUE SOON im just gonna fail tbh

Answers

Answer:

3) 5/2

Step-by-step explanation:

5x - 2y = 20

(First, put it in slope intercept form: y = mx + b).

5x - 2y - 5x = 20 - 5x --> Subtracted 5x on both sides of the equation

- 2y  = -5x + 20 --> Simplified

-2y/-2 = (-5x + 20)/-2 --> Divided by -2 on both sides

y = 2.5x - 10 --> Simplified

Since formula is, y = mx + b, then:

m (slope): 2.5

b (y-intercept): -10

Therefore, the answer is 3) 5/2

Hope this helped! <3

Let's solve for y.

5x − 2y = 20

Step 1: Add -5x to both sides.

5x−2y+−5x=20+−5x

−2y=−5x+20

Step 2: Divide both sides by -2.

−2y/−2  =  −5x + 20/−2

y =  5/2x − 10

Answer:

y =  5/2x − 10

Slope = x, therefore, the slope = 5/2.

Help plz I’m giving a lot of points

And no nonsense answers plz

Answers

Answer:

it is a positive number because she was rising if she had been going down then the number would have become negative.

Step-by-step explanation:

it is a positive number because she was rising,

however, if she was going down the number would become negative.

Solve the inequality. Please help answer needed fast!! Will give BRAINIEST ANSWER 10 POINTS!!!

Answers

Answer:

lol

edited: x is negative

Step-by-step explanation:

ANSWER QUICK HANKS I WILL GIVE BRAINLIEST

Answers

Answer:

2 2/9

Step-by-step explanation:

Answer: 2 2/9

Step-by-step explanation:

16/9÷4/5=80/36 simp 2 2/9

Andres has $7 he needs $50 to buy a skateboard each week his grandmother pay him $4 to complete some chores

Answers

Answer:

she has to give him 4 dollars each week for 11 weeks since he already has 7 dollars.

Step-by-step explanation:

4 x 11 = 44 +7 = 51 so now he had enough for a skateboard.

HELP PLEASE :( thank u

Answers

I really don’t know but I’m sure it’s the 1

A store sells a package of 25 trading hearts for $5.25 use pencil and paper explain how you can tell that the unit price per card is less than $1 what is the unit price per card.

Answers

Answer:

Unitary cost per card= $0.21

Step-by-step explanation:

Giving the following information:

Number of cards per packecge= 25

Total cost per package= $5.25

To calculate the unitary cost of each card, we need to use the following formula:

Unitary cost per card= total cost / number of cards per package

Unitary cost per card= 5.25 / 25

Unitary cost per card= $0.21

this is the choices
88
70
110
120

Answers

Answer would be 110 because if a figure has 4 angles all it's angle lengths add up to 360°, so since one of the angles is 70° and there is another angle that's identical to it, 70+70= 140, so you have to do 360-140 which gives you 220, and 220/2 = 110°

Answer:

110

Step-by-step explanation:

as a trapezoid contains of angles that add up to 360 .....and the top angles are equal and the bottom angles are equal ...therefore >v equals to 70 and w as well and x are equal to 110 each

What is the value of the growth factor of the function?
A) 1/5
B) 1/3
C) 2
D) 6

Answers

Answer:

B

Step-by-step explanation:

Divide 18 by one third and see what ya get

then 6, then 2. BOOM!

I need help on math ​

Answers

Answer:

its the first one

Step-by-step explanation:

i have no step by step explanation

solve for x.

3x - 8x + 2 = 17

X=

Answers

Answer:

-3

Step-by-step explanation:

3x-8x=17-2

3x-8x=15

-5x=15

-x=15/5

-x=3

x=-3

1/2=2m then what is m?

Answers

Answer:

m = 1/4 or 0.25

Step-by-step explanation:

1/2 = 2m

[Symmetric property of equality]

2m = 1/2

÷2. ÷2

[Division property of equality]

m = 1/2 ÷ 2

m = 1/4

________

1/2 = 2m → 1/2 = 2(1/4) → 1/2 = 2/4 →

1/2 = 2÷2/4÷2 → 1/2 = 1/2



Team Damon or team Stefan Or team Kai I’m team ✨Damon✨and ✨Kai✨all the way

Answers

Damon, Kai and klaus
I am team Damon and Kai

What is the value of -16 +9?

Answers

Answer

the answer is -7

Step-by-step explanation: −(16−9) =-7

which expression are equivalent to 2(4f+2g)​

Answers

Answer:

8f+4g

Step-by-step explanation:

If a new surfboard in North Carolina costs $320 and the sales tax is 4.75%, what
was the total cost of the surfboard?
$335.20
$304.80
$321.25
$342.40

Answers

$320 + 4.75% = $15.20 .

$320+$15.20= $335.20

Challenge A large university accepts 40% of the students who apply. Of the students the university
accepts, 45% actually enroll. If 20,000 students apply, how many actually enroll?
students would actually enroll. (Type a whole number.)
Plzzzz help

Answers

Answer:

3,500

Step-by-step explanation:

Evaluate the expression.

−4(−2) − 4 − 2 =

Answers

Answer:

2

Step-by-step explanation:

-4 x -2 is 8. -4 -2 is -6. 8-6 is 2.

Answer:

8-4-2=2

It was +8 because the multiplication of two negatives will give u a positive

Step-by-step explanation:

In ΔQRS, the measure of ∠S=90°, the measure of ∠Q=54°, and RS = 26 feet. Find the length of QR to the nearest tenth of a foot

Answers

SOH-CAH-TOA

sin Q     =    Opposite     =    26

                 hypotenuse          x

sin 54   =     26

                     x

x sin 54 = 26

x sin 54      =         26    

sin 54                sin 54

x =        26      =    32.1378  ≈  32.1 feet

          sin 54

Kate saved each week for 5 weeks and then spent $25. How much was she saving each week if she had $100 left at the end of 5 weeks and after spending $25? /3

Answers

Answer:

25 a week.

Step-by-step explanation:

100+25= 125

125÷5 = 25

Enter an inequality that represents the graph in the box. Please help!!

Answers

Answer:y > −3x + 6. (I know I put just a sign in my answer, I didn't get it lol.)

Solve for x:
7x = 105

Answers

Answer:

X=15

Explanation: You have no like terms to combine and are at the last step of the algebraic equation. So, you would divide 7 on both sides. 7 by 7 cancels it out and 105 divided by 7 equals 15. Hope this helps ^-^.

The solution to the equation 7x = 105 is x = 15.

We have the equation: 7x= 105

To solve for x in the equation 7x = 105, we need to isolate x on one side of the equation.

Divide both sides of the equation by 7:

(7x)/7 = 105/7

Simplifying:

x = 15

Therefore, the solution to the equation 7x = 105 is x = 15.

Learn more about Equation here:

https://brainly.com/question/29538993

#SPJ6

please help me!!!!!! asap

Answers

Answer:

(0,0)

Step-by-step:

Tess studied for 2/3 of an hour on Monday and 1 1/2 hours on Tuesday. How much more time did she spend studying on Tuesday than on Monday?

Answers

Answer:

she spent  2 1\6 studying more on tuesday because you got to add

solve for x:
x/2 + x/5 = 1

Answers

Answer:

x=10/7

Step-by-step explanation:

Answer:

X= 10/7

Step-by-step explanation:

I hope this works

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