Drake spent $540 on books. Math books cost $60 and science books cost $80. If he bought a total of 8 books, how many of each kind did he buy?

Answers

Answer 1

Answer:

He bought 4 in total

Answer 2

System of equations
(m + s = 8)60
60m + 80s = 540
60m + 60s = 480
20s = 60, s = 3
m + 3 = 8, m = 5
Solution: he brought 3 science and 5 math books

Related Questions

20. BRAINLIEST! URGENT! I need help.

Answers

the range would. Since the largest was 84 and now it's 96. that is a 12 number increase in the range

solve 10x-10g(4x-2)=1

Answers

Answer:

Below

Step-by-step explanation:

x=[tex]\frac{1-20g}{10(1-4g)}[/tex]

Answer:

using BODMAS=(4x-2)=(2x)

10x-10g(2x)=

10x=10+(2x)=

10x=20x

divide both sides by 10

10x/10=20x/10

x=20/10

x=2

5/3 + 1/8
Help nowwwww pls help

Answers

Step-by-step explanation:

5×8/3×8 + 1×3/8×3

=43/24

Answer:

1 19/24

Step-by-step explanation:

What are the coordinates for point A?
THIS IS A TEST SO PLS ANSWER CORRECTLY

Answers

Answer:

(4,-2)

Step-by-step explanation:

Your answer to this question will be D :)

true or false A rational number is a nonterminating, nonrepeating number

Answers

Answer:

A rational number is a nonterminating, nonrepeating number. this is false

false. A rational number is any number that can be expressed as a ratio of two integers.

Boris has to give medicine to his cat every morning for the next 14 days. How many weeks is this?

Answers

2 weeks every one has 7 days

Justify and explain please and thank you if you answered :)

Answers

It’s -2. When the numerator and denominator have different signs, the quotient is negative. If both the numerator and denominator are negative, then the fraction itself is positive because we are dividing a negative by a negative

What is the first step to simplify the expression? (1 Point)

5 - 3 + 2 X 5

Subtract
add
multiply
simplify from left to right

Answers

Multiply first then you would wanna add but you can't until you subtract 5-3 then add I got 12

Layla is driving to a concert and needs to pay for parking. There is an automatic fee of
$8 just to enter the parking lot, and when she leaves the lot, she will have to pay an
additional $3 for every hour she had her car in the lot. How much total money would
Layla have to pay for parking if she left her car in the lot for 6 hours? How much
would Layla have to pay if she left her car in the lot for t hours?

Answers

Answer:

additional charge=$3×$6

=$18

minimum charge =$8

total=$24

Answer:

$26

8 + 3t

Step-by-step explanation:

If Luke is 5 feet and 9 inches tall and Ben is 6 feet and 2 inches tall, What is their total height in centimeters rounded to the nearest centimeter? (There are 2.54 centimeters in 1 inch)

Answers

The answer is 257 centimeters .

5ft9 = 175.26 cm
6ft2 = 187.96 cm
175.26 + 187.96 = 363.22 cm
Round => 363 cm

A pentagon has 5 equivalent sides. If each side is represented by the expression 2k+3, what is the perimeter

Answers

The perimeter would be 20841470

Can some one help me with this, I can't get it, and i'll give brainliest, 5 star, and all the good stuff.

Answers

a. 2.964
b. 0.262
c. 0.4863

5. Decide whether each equation is true for all, one, or no values of x.
a. 2x + 8 = -3.5x + 19
b. 9(x - 2) = 7x + 5
C. 3(3x + 2) – 2x = 7x + 6

Answers

c doesn’t have a value , x equals 0 , x=0

he sum of twice a number and 15”

Answers

Answer:

2x + 15 = the sum of twice a number and 15

Step-by-step explanation:

by using thr numerical values from Q9, Calculate the sum of the letters in your answers to Q11 and Q12 by replacing the letters with their equivalent numbers and adding them up

what is 6X + 9 + 2x

Answers

Answer:

8x + 9

Step-by-step explanation:

Combine 6x and 2x since they are "like variables" meaning they both contain an x, and write in standard form ax + bx + c

evaluate
7n-(m+18)
if n = 4; m=10 how do you solve ?

Answers

Answer:

7(4) - (10+18)

28 - 28

Step-by-step explanation:

okay, 7 (n) if n = 4 that means 7 times 4 so that equals 28 BUT we do (m + 18) first so if m= 10 that means (10 + 18) would be 28, so

28 - 28= 0

can you help me please

Answers

Answer: 2

Step-by-step explanation:

2.5 by 2 is 5

Lengthy by width is area

Alison's dog is 6 pounds more than five times the weight of gales dog what algebraic equation could you make to find G which is the way to gail's dog.

Answers

Answer:

g = (x - 6) / 5

Step-by-step explanation:

Given:

Let :

Alison's dog = x

Gale's dog = g

x is 6 pounds more than 5 times g

Mathematically,

x = 5g + 6

We can solve for g ;

x - 6 = 5g

Divide both sides by 5

(x - 6) / 5 = g

Pls help me with this question I will mark brainiest.

Answers

Answer:

where is the question

Step-by-step explanation:

Answer:

Just wondering, where is the question?

Step-by-step explanation:

Find the distance between line OP the x's and y's are given please answer this with a fraction or decimal, I would appreciate it and give thanks to anyone who can help:)

Answers

Answer:

c ≈ 5.83095189485

Step-by-step explanation:

We can use the Pythagorean Theorem [tex](a^{2} +b^{2} =c^{2} )[/tex] for these kinds of problems.

So, pretend that line is the hypotenuse of a right triangle. One side would be

3 units long and another would be 5 units long. Let's plug that into the theorem.

3² + 5² = c²

Simplify.

9 + 25 = c²

Add.

34 = c²

And now square root both sides.

√34 = c

c ≈ 5.83095189485

can someone plssss help what is this? what is the algebraic for the following phrase? 7 less than z
A 7z
B z + 7
D z - 7
C z ÷ 7

Answers

Answer:

D cause z is bigger than 8

Answer:

z - 7

step-by-step explanations:

When Sergio went to dinner with his brother, the bill was $51.19. What was the total they paid if they left a 15% tip?

Answers

Answer:

The total they paid was $58.8685

Step-by-step explanation:

Let us solve the question using the percentage method

∵ Sergio went to dinner with his brother

∵ The bill was $51.19

∵ They left a 15% tip

→ That means they pay extra money 15% of $51.19

∴ The total they paid = the bill + 15% of the bill

∵ 15% of the bill = 15% × 51.19

→ Change 15% to a decimal by divide it by 100

∴ 15% of the bill = [tex]\frac{15}{100}[/tex] × 51.19

∴ 15% of the bill = 0.15 × 51.19

∴ 15% of the bill = $7.6785

→ Substitute it in the total they paid

∵ The total they paid = 51.19 + 7.6785

∴ The total they paid = $58.8685

∴ The total they paid was $58.8685

Answer:

131.15

Step-by-step explanation:

find the area please

Answers

Answer:525 to find area multpi all sides

Step-by-step explanation: can i have brainlst since i helped you

Answer: d.

Step-by-step explanation: 7x15= 105x5= 525

HELP I NEED HELP ASAP

(-4,6), slope=-1

Write the slope-intercept equation using the given information.

Answers

Answer:

y = -x +2

Step-by-step explanation:

y = mx + b

y=6

x=-4

m=-1 (m is the slope)

b=? (b is the y-intercept)

Putting these numbers into this equation,

6 = -1(-4) + b

b=6-4

b=2

So the equation is y = -1x + 2

or just y = -x +2

What is the equation of the vertical asymptote for the graph below ?
y = 5 + 1 / x + 3

Answers

Vertical asymptotes can be found by solving the equation n(x) = 0 where n(x) is the denominator of the function ( note: this only applies if the numerator t(x) is not zero for the same x value). Find the asymptotes for the function . The graph has a vertical asymptote with the equation x = 1.

The equation of the vertical asymptote is x = -3

The function is given as:

[tex]y =\frac{5x +1}{x + 3}[/tex]

Assume the equation of the function is:

[tex]y =\frac{m(x)}{n(x)}[/tex]

So, by comparison;

We have:

[tex]n(x)=x + 3[/tex]

Set n(x) to 0

[tex]x + 3 = 0[/tex]

Subtract 3 from both sides

[tex]x = -3[/tex]

Hence, the equation of the vertical asymptote is x = -3

Answers

Answer:

A. Y = 5x + 10

Step-by-step explanation:

The bear gains 5 pounds a month. The X represents the months in which five pounds gradually build. This is represented by 5x. We need to add the bears original 10 pounds so Y = 5x + 10.

Answer:

a is the answer I did dat before

I need to find the resultant matrix

Answers

the answers are there

i hope it will help you

Elle wanted to order candy online.

Company A is offering 212 pounds of chocolate for $32.50 at a unit rate $
per
,

while Company B is offering 245 pounds of the same chocolate for $35.00 at a unit rate $
per
.

Which company is offering the lowest price per pound?

Company
has the lowest price per pound.

Answers

Answer:

Company A has the lowest price per pound

Step-by-step explanation:

A- 212÷32.50= 6.5230769231

B- 245÷35= 7

So, company A has the lowest price per pound of chocolate

hope this helps, have a good day! =)

what is w/5 - 5 > -8?

Answers

Answer:

w > -15

Step-by-step explanation:

(w/5-5>-8)5

w-25>-40

w>-40+25

w > -15

Answer:

w=−12

Step-by-step explanation:

Sam saves up to buy a baseball glove that costs $60.00. He must pay 7% sales tax.
He has $65.00
What is the total price with tax? Does he have enough money?

Answers

Answer:

Step-by-step explanation:

6x+14=50

(6x is hourly wage, x being the hours, 14 is the amount he started with, and 50 is what he needs)

6x=36

x=6 hours

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