The revenue last month Kevin, if he sold 18 new books and 21 old books, will be $ 267.
What is the linear system?A linear system is one in which the parameter in the equation has a degree of one. It might have one, two, or even more variables.
Kevin is opening up a bookstore, where he sells both new and old books.
He charges $10.75 for a new book and $3.50 for an old book.
Then the revenue last month Kevin, if he sold 18 new books and 21 old books, will be
Then the total revenue will be
Total revenue = 10.75 x 18 + 3.50 x 21
Total revenue = 193.5 + 73.5
Total revenue = $ 267
More about the linear system link is given below.
https://brainly.com/question/20379472
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Five more than the product of a number and three is negative twenty-five.
He cafeteria at Midtown Middle School surveyed 575 students about their favorite food. If 8% of the students surveyed liked chicken, how many students said that chicken is their favorite food?
Answer:
46.08 students said that chicken is their favorite food.
Step-by-step explanation:
Let X denote the number of students who liked chicken.
The proportion of students who liked chicken is, p = 0.08.
About n = 576 students were surveyed about their favorite food.
Every student's answer was independent of the others.
Thus, the random variable X follows a binomial distribution with parameters n = 576 and p = 0.08.
The probability mass function of X is:
[tex]P(X=x)={576\choose x}(0.08)^{x}(1-0.08)^{576-x};\ x=0,1,2,3...576[/tex]
Then expected number of students who said that chicken is their favorite food is:
[tex]E(X)=np\\\\=576\times0.08\\\\=46.08[/tex]
Thus, 46.08 students said that chicken is their favorite food.
A school librarian has enough money to order 8 paperback books at $155 each. If the librarian decided instead to
order books with hard covers at $188 each, how many books can the librarian buy?
hi
money he has : 155 *8 = 800 + 440 = 1240
SO 1240 / 188 ≈ 6.59
so answer is 6 as you cannot buy half books...
Answer: 6 hard cover books
Step-by-step explanation:
$155 x 8 =1,240
$188 x 6 = 1,128 which is as close as you can get without going over
Bryce grows a sunflower that contains 1,354 sunflower seeds. Six people share the harvested seeds. If they share the seeds equally, how many seeds will be left over?
Answer: 4 seeds will left over.
Step-by-step explanation:
Total sunflower seeds = 1354
Number of people shared sunflower seeds equally = 6
By division operation,
Number of seeds each people will get = (Total sunflower seeds) ÷ (Number of people shared seeds equally)
[tex]= (1354) \div (6)[/tex]
[tex]=225\dfrac{4}{6}[/tex]
Hence, each people will get 256 sunflower seeds and 4 seeds will left.
Marcus can choose between a monthly salary of $1,500 plus a 5.5% commission of sales or $2,000 plus a 3% commission of sales. He expects about $8,000 in sales each month. Which salary option should he choose?
Answer:
2,000 plus a 3% commision :))
Step-by-step explanation:
A 7 inch candle burns at a rate of 2 inches per hour. Which equation represents the
relationship between y, the height of the candle, and x, the number of hours the
candle burns?
Answer:
b
Step-by-step explanation:
-6(2+a)=-48 what is the value for a
Answer:
6
Step-by-step explanation:
-6(2+a) = -48
-6 × 2 + -6 × a = -48
-12 - 6a = -48
-6a = -48 + 12
-6a = -36
a = -36/-6
a = 6
hope you understood!
The cost of 5 pounds of vegetables is $7.55. What is the constant of proportionality that relates the cost of dollars, y,
to the number of pounds of vegetables, x?_(Write a numeric value in decimal form. Do not include units)
Answer:
1.51
Step-by-step explanation:
[tex]y[/tex] = Cost in dollars of vegetables
[tex]x[/tex] = Number of pounds of vegetables
[tex]y\propto x[/tex]
[tex]\Rightarrow y=kx[/tex]
where k = Constant of proportionality
[tex]k=\dfrac{y}{x}[/tex]
In one case
[tex]y = 7.55\$[/tex]
and [tex]x = 5\ \text{pounds}[/tex]
[tex]k=\dfrac{7.55}{5}\\\Rightarrow k=1.51[/tex]
The constant of proportionality is 1.51.
10. ''Saving electricity in our homes is saving our money.'' Mention five ways of saving energy.
Answer:
Some ways of saving energy include : turn off the fan / lights when you leave a room, hang your clothes out to dry, don't run your dishwasher half full, turn off the water when your not using it, don't stand in front of an open refrigerator door. Hope this helps :)
what is the input value other than -7 for which h(x)=3
Answer:jrntker,fgv;rmjhnopgykjpftg.l/;[]ref
Step-by-step explanation:
wem,yk6iotfkmmkgjjjkdlmeruijtnmgjhudjmv n
Which expression is equal to 5 6 (6 is an exponent)
6x5
36x6x6x6
25x5x5x5
125x125
Answer:
125 x 125
Step-by-step explanation:
I got it correct on my i ready pls trust.
Alyssa used a scale in which 1 inch represents 100 feet. If the actual landmark has a height of 508 feet, find the height of Alyssa's model in inches.
Answer:
5.08 inches
Step-by-step explanation:
Alyssa used a scale in which 1 inch represents 100 feet. If the actual landmark has a height of 508 feet, find the height of Alyssa's model in inches.
The scale =
1 inch = 100 feet
100 feet = 1 inch
508 feet = x inches
Cross Multiply
100 × x = 508 × 1
x = 508 × 1/100
x = 5.08 inches
The height of the model is 5.08 inches
pls help find the inequality represented by the graph
Answer:
use the linear equation of a line
equation of a line is typically written as y=mx+b where m is the slope and b is the y-intercept.
now u do the rest
Nina cuts a 1 3/4 cm piece of paper from a strip measuring 2 7/8 cm. How much paper is left?
Answer with solution pls :]
Answer:
1.125
Step-by-step explanation:
1 and 3/4 = 1.75
2 and 7/8 = 2.875
So
2.875 - 1.75 = 1.125
What's the answer to this question because im having trouble
Answer:
The Answer Is A The First One On The Very Left 5/12 - 3/12
It rained all day on Mother's Day and the temperature dropped fourteen and seven tenth degrees. The next day the rain stopped and the temperature rose ten and nine tenths degrees. If the temperature at the beginning of Mother's Day was sixty five and eight tenths degrees, what was the temperature at the end of the day after Mother's Day?
PLEASE ANSWER< I WILL GIVE YOU BRAINLIEST
Answer:
62 Degrees
Step-by-step explanation:
65 8/10 - 14 7/10 = 51 1/10
51 1/10 + 10 9/10 = 62
$97.55 business breakfast, 18% tip
Answer:
115.109 or 115.11 dollars
Step-by-step explanation:
multiply 97.55 by 1.18 to get the amount.
Answer:
$17.60
Step-by-step explanation:
Have an excellent day everyone!
your car gets 25 miles per hour and you want to go on a 400 mile road trip right now gas costs 2.59 per gallon how much would the gas for you road trip cost??
Answer:
40.96
Step-by-step explanation:
25 400
2.56 ?
400*2.56
=1024
1024/25
=40.96
A line has a slope of -3/4 and passes through the point (-5, 4). Which is the equation of the line?
Answer: A
Step-by-step explanation:
y-4 = -3/4(x+5)
y = -3/4x+1/4
Answer: the equation is y= 3/4 times + 1/4 is your answer
A factory can produce 18,000 toy cars in an 8 hour shift. At this rate, in how many shifts could the factory produce 90,000 toy cars? *
Answer
In five shifts, the factory could produce 90,000 toy cars.
Step-by-step explanation:
Multiply 18,000 by 5 to get 90,000 cars.
I need help asap thxss
Answer:
Step-by-step explanation:
Plot the line for the equation on the graph.
y−2=−2(x+4)
Answer:
(-3,0) and (0,-6)
Step-by-step explanation:
Find the area of the triangle
Answer:
The area of the triangle WYX = [tex]\frac{35}{2}[/tex] = 17[tex]\frac{1}{2}[/tex]
Step-by-step explanation:
The area of the triangle WYX is [tex]\frac{1}{2}[/tex]*b*h
We need to find base (b) and height (h)
By counting from the drawing, the base which is horizontal is 7 and the height which is vertical is 5
The area of the triangle WYX is [tex]\frac{1}{2}[/tex]*b*h
The area of the triangle WYX = [tex]\frac{1}{2}[/tex]*7*5 = [tex]\frac{35}{2}[/tex] = 17[tex]\frac{1}{2}[/tex]
Please help!! I need the answer and the explanation on how to do this
Answer:
the first one
Step-by-step explanation:
y=3x+2
2x+y=-4
becomes
3x+2=y
2x+4=-y
add them
5x+6=0
5x=-6
x=-5/6
take x and replace it for one equation
y=-8/5
A bag contains 36 calculators. This number is 75% of the number of calculators that can fit in the bag. How many calculators can the bag hold when filled?
Answer:
48
Step-by-step explanation:
Let X represent the total number of the calculator, then we can form an equation from the explanation of the question as
X × 75/100=36
75x=36×100
Making X the subject of the formula we have,
X=3600/75
X=48
Hence, 48 calculators can the bag hold when filled
help
Use the Pythagorean theorem to write an equation for 16^2+12^2=c^2
Answer:
C=20
Step-by-step explanation:
Pythagorean theorem is a^2 + b^2=c^2. So, a=16, and b=12. 16 squared is 256. 12 squared is 144. 256+144=400. 400=c^2. So, the square root of 400=c. and that is 20.
Which fraction is not equivalent to 9/12 ?
Answer:
16/24 is the correct answer.
Step-by-step explanation:
9/12 = 3/4
24/32 = 3/4
6/8 = 3/4
15/20 = 3/4
16/24 = 2/3
Answer:
D. 16/24
Step-by-step explanation:
If you simplify 9/12 = 3/4 because (9/12) ÷ 3
So let's just simplify the rest.
15/20 = 3/4
(15/20) ÷ 5 = 3/4
24/32 = 3/4
(24/32) ÷ 8 = 3/4
6/8 = 3/4
(6/8) ÷ 2 = 3/4
So the answer is 16/24
16/24 = 2/3
Hope this helps ya!!!
HELPPP
Timmy and Sam ran in a marathon. Timmy ran at a constant speed of 5 miles per hour. Sam ran at a
constant speed of 4 miles per hour and had a head start of 2 miles. Determine where Timmy and Sam will
meet.
Answer:
they will meet 10 miles out after 2 hours
Step-by-step explanation:
Which expression is a difference of cubes?
9w33 - y12
18p15-q21
36a22-b16
64c15 - d27
Answer:
D. 64c15 - d27Step-by-step explanation:
A. 9w33 - y12
No. 9 is not a perfect cubeB. 18p15-q21
No. 18 is not a perfect cubeC. 36a22-b16
No. 36 is not a perfect cube and 16 is not divisible by 3D. 64c15 - d27
Yes. (4c^5)^3 - (d^9)^3Answer:
Answer:
D. 64c15 - d27
Step-by-step explanation:
A. 9w33 - y12
No. 9 is not a perfect cube
B. 18p15-q21
No. 18 is not a perfect cube
C. 36a22-b16
No. 36 is not a perfect cube and 16 is not divisible by 3
D. 64c15 - d27
Yes. (4c^5)^3 - (d^9)^3
Step-by-step explanation:
are the adjacent angles in a parallelogram congruent always, sometimes, or never
Answer:
always
Step-by-step explanation:
if something parallel then it never touch each other and are opposite of each other