Answer:
Book = $8 each
CD = $5 each
8 x 5 = 40
2 x 5 = 10
= 50
8 x 2 = 16
5 x 3 = 15
= 31
Please mark as brainliest.
Answer:
One book equals $8 and one CD equals $5
Step-by-step explanation:
Let books be denoted as 'x' and CDs as 'y'
5x + 2y = 50 ...1
2x + 3y = 31 ...2
I usually eliminate the y variable, and to do this, you multiply the first equation by 3 and the second equation by 2, because the lowest common multiple between 2 and 3 is 6.
...1*3 and ...2*2
15x + 6y + 150 ...3
4x + 6y = 62 ...4
Eliminate y by taking ...4 away from ...3
15x - 4x = 150 - 62
11x = 88
x = 8
Sub this value into ...1
5(8) + 2y = 50
40 + 2y = 50
Rearrange
2y = 50 - 40
2y = 10
y = 5
This means that one book is $8 and one CD equals $5
If I was asked to think of a number and multiply it by 2, I could
write this algebraically as 2x.
Write the following algebraically, using x as your unknown.
"I think of a number, add 3 to it and multiply the result by
Answer:
6
Step-by-step explanation:
u use the equation 2x
so It looks like this...2(3)
so the result is 6
pls mark me as brainliest
Student council is selling Roses and Candy Grams for Valentine's Day. Each Candy Gram costs $1.50
and each Rose costs $2.00. The student council made $368 from their sales. They sold a total of 217
Roses and Candy Grams. How many roses were sold? Show all your work for full marks! (Solve the linear
system using substitution or elimination).
Letr represent
Let c represent
I
Answer:
Number of Roses sold = 132
Number of Candy Grams sold = 85
Step-by-step explanation:
Let the number of Roses sold = [tex]r[/tex]
Let the number of Candy Grams sold = [tex]c[/tex]
Cost of one Rose = $1.50
Cost of [tex]x[/tex] Roses = $1.50 [tex]r[/tex]
Cost of one Candy Gram = $2.00
Cost of [tex]y[/tex] Candy Grams = [tex]\$2.00 \times c[/tex]
Total number of Roses and Candy Grams sold = 217
i.e.
[tex]r+c=217 ..... (1)[/tex]
Total cost = $368
Writing equation as per question statement:
[tex]\$1.50r+\$2.00c=\$368 ..... (2)[/tex]
Using elimination method, let us eliminate [tex]y[/tex] of the two equations.
Multiplying equation (1) with 2 and subtracting equation (2) from it:
[tex]0.50r=2\times 217 - 368\\\Rightarrow 0.50r=434 - 368\\\Rightarrow 0.50r=66\\\Rightarrow r=132[/tex]
By equation (1):
[tex]c=217-132\\c=85[/tex]
So, the answer is:
Number of Roses sold = 132
Number of Candy Grams sold = 85
If the geometric mean between 1/9 and m is 2, then find the value of m.
Answer:
Letmeansareaandb
then1,a,b,64areinGP
∴64=1×r
2
∴r=4
thena=1×r=4
b=1×r
2
=16.
So, the correct option is '4 and 16'
the fastest train in the western hemisphere is acela express on a route between boston,massachusetts and new haven,conneticut the train regulary travels 135 miles in 60 minutes what is the speed in mies per minutes on the portion of the route
Answer:
acela express
Step-by-step explanation:
it travles 135 miles in and hout
Answer:
2.25
Step-by-step explanation:
its right on edg
a car can drive 600 miles on 18 gallons of gasoline. How many miles can a car drive on 15 gallons of gasoline
Answer:
Use the cross technique if it’s name like that in English but , I wish you can understand it from what I‘ve written .
Help me solve this problem please
Answer:
(2,5) is right answer ok
Rhonda bought her son an inflatable pool for the summer. It took her twenty minutes
to fill the pool to a depth of 6 inches. What is the unit rate per minute? (inches per minute)
Answer:
the unit rate would be 0.3 inches per minute (i'm pretty sure)
Step-by-step explanation:
because 6 divided by 20 = 0.3
hope this was correct and i hope this helped have a good rest of your day :)
plz help asap
thanks xoxoxoxoxox
Quadrilateral ABCD is a square and the length of BD¯¯¯¯¯ is 10 cm. What is the length of AE¯¯¯¯¯ ? Enter your answer in the box. the length of AE¯¯¯¯¯ = cm
Answer:
3
Step-by-step explanation:
I took the test
What is 1/3-5/6/5/6 enter ur answer of simplest form
Answer: 0.30555555555
Step-by-step explanation:
the last customer of the day is a loyal customer who brings in a $15.00 off coupon. She purchases two paint brushes, one dozen colored pencils, and one sketch book. What percent did she save by using her coupon?
WILL MARK BRAINLIEST PLEASE HELP!!!!!!!!!!!!!!!!!
Answer:
its c
Step-by-step explanation:
TRUE OR FALSE: When writing a number in scientific notation, the first number must be between 1 and 9
A number is written in scientific notation if it's composed of a whole number or decimal between 1 and 10 (including 1, but not 10) times a power of ten.
Answer:
True! Well kind of
Step-by-step explanation: Its actually between 1 and 10 (nothing below 1 and nothing higher than ten) ✝️❤️
18(x + 1) = -54 pls help solve this...
Answer:
x = 71
Step-by-step explanation:
18(x + 1) = -54
to start off, subtract 18 from both sides
18 - 18(x + 1) = -54 - 18
that should give you
x + 1 = 72
(its safe to take out paranthesis from problem by now) now take away 1 from each side
x + (1 - 1) = 72 - 1
that should give you
x = 71
complete the statements below about the graphs of y=-2x and y=x
Answer:
Compared to the graph of y = x, the graph of y = -2x is steeper.
Compared to the graph of y = x, the graph of y = -2x intersects the y-axis at the same point.
Compared to the graph of y = x, the graph of y = x + ⅔ is equally steep.
Compared to the graph of y = x, the graph of y = x + ⅔ intersects the y-axis at a higher point.
hiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiStep-by-step explanation:
Please help
Tracy is saving to buy a new guitar that costs $253.77 (including tax). Tracy has saved $136.27, and she can save $23.50 each week.
Which equation could you use to find how long it will take to save for the guitar?
$253.77 + $136.27 = $23.50 w
$253.77 - w = $136.27 + $23.50
$136.27 + $23.50 w = $253.77
$23.50 w = $253.77
Answer:
is the last one brof
Step-by-step explanation:
It takes a total of 3 hours to wash every window on a building. There are 30 windows. How many minutes does it take to wash just one window?
0 6 minutes
60 minutes
180 minutes
5.400 minutes
Answer:
6 minutes
Step-by-step explanation:
3 hours = 180 minutes
180 minutes / 30 windows= 6 minutes per window
i neeed help asap please
Answer:
X=8
Step-by-step explanation:
EASY MATH
Each set of ordered pairs represents a function. Write a rule that represents the function (0, 0), (1, 1), (2, 4), (3, 9), (4, 16)
Use a sentence to describe c(10)=-3
Answer:
a number times ten equals negative three
Step-by-step explanation:
A caterer charges $275 for 15 people and $425 for 25 people. The cost, y, is a
linear function of the number of people. Write an equation in slope-intercept
form for this situation.
Answer:
y = 15x + 50
Step-by-step explanation:
We set out by finding the slope
the two points give are (15,275) and (25,425)
Slope m is;
y2-y1/x2-x1 = (425-275)/25-15 = 150/10 = 15
So the equation is like;
y = 15x + b
To get b, let us use the point (15,275)
We have
275 = 15(15) + b
b = 275-225
b = 50
So the equation is;
y = 15x + 50
1. What is the length of
s?
60"
12
Answer:3 I think
Step-by-step explanation:
The thickness of a block is approximately 2 centimeters. How many blocks are in a stack that is 1,000 millimeters high? ( 1 cm = 10 mm )
Answer:
1block=2cm
1cm=10mm
therefore 1block=2×10=20
1000÷20=50
=50blocks
I NEED HELP ASAP!!!!!!ANY RIGHT ANSWER GETS BRAINLIEST!!!
A bookstore is advertising 25% off all books today. What is the sale price of a book that has a retail price of $18?
a.$13.50
b.$4.50
c.$22.50
d.$16.50
How can ΔABC be mapped to ΔXYZ?
First, translate vertex A to vertex
.
Next,
ΔABC to align the sides and angles.
Answer:
X
Rotate
Step-by-step explanation:
correct on edge 2020
Answer:
a. x
c. rotate
Step-by-step explanation:
edge2021 :)
Find the slope of the line
Answer:
Slope is y= -1/2x + 6.5
Step-by-step explanation:
Renzi can type 50 words per minute. Samuel can type 45 words per minute. If Renzi and Samuel each type for 20 minutes, about how many more words can renzi type?
Answer:
100
Step-by-step explanation:
(50-45)*20
=5*20
=100
PLEASE GIVE BRAINLIEST
Answer:
Renzi can type 100 more words than Samuel
Step-by-step explanation:
PLZ MARK BRAINLIEST!!!
Amrit initiated new venture with cash rupees 20000 and bank balance rupees 80000 journal entry
Answer:
100000 rupees great success!
Step-by-step explanation:
my brain is too tired to function someone save me
Answer:
(3,2)
Step-by-step explanation:
Hope I helped
Seismosaurus is the longest known dinosaur. It measured 1800 inches. How far would 3000 Seismosaurus dinosaurs span if they were placed head to tail. Use scientific notation to calculate the length. (PLEASE HELP ME! MY WORK IS DUE TOMORROW)
Answer:
I am not sure sorry
Step-by-step explanation: