Answer:
Cost of a roll of plain wrapping paper = $6
Cost of a roll of shiny wrapping paper = $20
Step-by-step explanation:
Let [tex]x[/tex] denotes cost of a roll of plain wrapping paper and [tex]y[/tex] denotes cost of roll of shiny wrapping paper.
Jack sold 5 rolls of plain and 8 rolls of shiny for a total of $190.
[tex]5x+8y=190\,\,\,(i)[/tex]
Beth sold of 5 rolls plain and 3 shiny for a total of $90.
[tex]5x+3y=90\,\,\,(ii)[/tex]
Subtract (ii) from (i).
[tex]8y-3y=190-90\\5y=100\\y=20[/tex]
Put [tex]y=20[/tex] in (ii)
[tex]5x+3(20)=90\\5x+60=90\\5x=90-60\\5x=30\\x=6[/tex]
Therefore,
Cost of a roll of plain wrapping paper = $6
Cost of a roll of shiny wrapping paper = $20
The accompanying graph represents the yearly cost of playing 0 to 5 games of golf at the Shadybrook Golf Course. What is the total cost of joining the club and playing 10 games during the
year?
Answer:
$390
Step-by-step explanation:
y=30x+90
y+30(10)+90
y=300+90
$390 is the total cost of joining the club and playing 10 games during the
year
What is algebraic expression?An algebraic expression in mathematics is an expression which is made up of variables and constants, along with algebraic operations (addition, subtraction, etc.). Expressions are made up of terms.
Given
y=30x+90
y+30(10)+90
y=300+90
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Given that a = 6 cm and b = 5 cm,
work out the height of the triangle.
The height of the triangle is 4 cm if the a = 6 cm and b = 5 cm and applying Pythagoras theorem.
What is the Pythagoras theorem?The square of the hypotenuse in a right-angled triangle is equal to the sum of the squares of the other two sides.
The question is incomplete.
The complete question is in the picture, please refer to the attached picture.
We can draw a right angle triangle to find the hieght of the triangle.
Applying Pythagoras theorem.
Let h be the height:
b² = (a/2)² + h²
5² = (6/2)² + h²
5² = (3)² + h²
h = 4 cm
Thus, the height of the triangle is 4 cm if the a = 6 cm and b = 5 cm and applying Pythagoras theorem.
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The inequality graphed below represents the ages, a, of players on a baseball team.
Which rule describes the composition of transformations that maps figure ABCDE to figure A" B" C" D" E"?
Answer:
It would be the fourth choice.
Step-by-step explanation:
To get ABCDE to A'B'C'D'E', you need to reflect the shape across line M. Then to go from A'B'C'D'E' to A''B''C''D''E'', you need to rotate about point C 180⁰.
It was first reflected across the x axis which would be line m. And since point c is the same place for the two bottom images , after the reflection it was rotated on point c.
The answer should be the 4th choice
Solve for r when
- 5 = – 4
-
20
r=
What is r?
Answer:
r is 19
Step-by-step explanation:
-4 - 20 = -24
-24 - r = -5
r = 19
Answer:
r=1/20
Step-by-step explanation:
-5=-4-20r (+4 both sides)
-1=-20r (times -1 both sides)
1=20r (divide by 20)
1/20=r
Hiiioo can someone please help me please!
Answer:
B, -3/4
Step-by-step explanation:
Slope can be found by using rise over run. From point x the line drops three points making the rise -3, and it goes to the right four points making the run 4. That makes our answer -3/4.
45/g = 5/1
What's the answer for g
Please explain...
y=3x^2-5x+1 solve by completing the square
Answer:
x=5+√136or x=5−√136
Step-by-step explanation:
To solve this equation we have to factorize 3x2−5x+1. Since we can not use any
A boat is traveling a distance of 90 km at a speed of 30 km/s, how long will it take to reach its destination?
PLEASE SHOW WORK!
Answer:
3 sec
Step-by-step explanation:
30 km/s is 30 kilometers per second. There are 90 km. #0 km is 1/3 of 90 km.
Please mark me the brainliest, 5 stars, and a thank you! Have a GREAT day!
hi I need help with this question
Answer:
Use your calculator to find the value of:

Write all the figures on your calculator's display for th
SOMEONE HELP pslslspsls
Answer:
4
Step-by-step explanation:
This is easy but hard for me can someone help me ASAP please
Answer:
u have them all selected
Step-by-step explanation: but i thnk the answer is -3 and -1
Seth sold 12 glasses of lemonade yesterday. Today Seth sold 25% more glasses of lemonade than yesterday. How many more glasses did Seth sell today?
Answer:
15
Step-by-step explanation:
If he sold 12 glasses of lemonade yesterday then 25% more is 1/4 more. 1/4 of 12 is 3. Add 3 to 12 and you get 15.
Write an equation in point-slope form for the line that passes through the point with the given slope. point: (4,2) and m=3
Answer:
y = 3x - 10
Step-by-step explanation:
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Answer: The answer is A
Step-by-step explanation:
1/2p+75=100
1p/2+75=100
Multiply by 1
3
Subtract
7
5
75 from both sides of the equation
4).
Simplify
5).
Multiply all terms by the same value to eliminate fraction denominators
6).
Simplify
Can u plz mark me branliest plz.
Answer:
p = 50
Step-by-step explanation:
[tex]\frac{1}{2} *p+75=100\\[/tex]
Combine like terms into a single fraction:
[tex]\frac{1}{2} p+75=100[/tex]
[tex]\frac{1p}{2} +75=100[/tex]
Multiply by 1:
[tex]\frac{1p}{2}+75=100[/tex]
[tex]\frac{p}{2} +75=100[/tex]
Subtract 75 from both sides of the equation:
[tex]\frac{p}{2} +75=100[/tex]
[tex]\frac{p}{2} +75-75=100-75[/tex]
Simplify:
Subtract the numbers:
[tex]\frac{p}{2} +75-75=100-75[/tex]
[tex]\frac{p}{2} =100-75[/tex]
Subtract the numbers:
[tex]\frac{p}{2} =100-75[/tex]
[tex]\frac{p}{2} =25[/tex]
Multiply all terms by the same value to eliminate fraction denominators:
[tex]\frac{p}{2} =25[/tex]
[tex]2*\frac{p}{2} =2*25[/tex]
Simplify:
[tex]2*\frac{p}{2} =2*25[/tex]
[tex]p=2*25[/tex]
Multiply the numbers:
[tex]p=2*25[/tex]
[tex]p=50[/tex]
Solution:
[tex]p=50[/tex]
Item 5
Graph y = −x/3 + 4.
Answer:
Just use desmos graphing
Edit: I did it on desmos, here's a screenshot
the bakers at noah's bagels can make 340 bagels in 4 hours so how many can they make in 10 hours ?
Answer:
850 bagels in 10 hours.
Step-by-step explanation:
340 divided by 4 is 85. 85 times 10 is 850. So, 850 bagels.
Soybeans have a conversion factor of 36.744 (bu/t). How much do 45 bushels weigh?
Answer:
the weight of 45 bushels is 1.22
Step-by-step explanation:
The computation is shown below:
As the soybeans has the conversion factor of 36.744
So the weight of 45 bushels be
= 45 ÷ 36.744
= 1.22
hence, the weight of 45 bushels is 1.22
Pablo uses 13.5 cups of flour to make 6 batches of muffins. How many cups of flour did he use per batch?
I need help fast plz
Answer:
what do you need help with
On a blueprint, the diagram of a building has a height of 25 cm.
The height of the building is x times the height of the diagram.
Which equation represents the height, h, of the building?
h = 25 : x
B
x = 25h
h = 25 + x
h = 25x
Answer:
h = 25x
Step-by-step explanation:
Given the following
height of building = h
height of diagram = 25cm
If the height of the building is x times the height of the diagram, then;
h = x * 25
h = 25x
Hence the required equation is h = 25x
Find the exact height of the isosceles triangle.
Please help me on this question I’m stuck:(
18 is 75% of what number?
Answer:
24
Step-by-step explanation:
18 * 4 /3 = 72/3 = 24
Which number is not an integer? Select all that apply.
1.33
a.
b. -7
c.
d. 4
e. O
f. -1.63
Answer:
A and 1.33 and -1.63
Step-by-step explanation:
A integer is a whole number, it's either positive or negative.
What is the mean of the data set?
47, 25, 43, 33
Answer:
The mean is 47
Step-by-step explanation:
First, you want to add up all of the numbers.
47 + 25 + 43 + 33 = 148
Now, you want to divide what you got by how many numbers there are.
148/4 = 37
The mean is 47
Mean of the terms given in the data set as {47, 25, 43, 33} (four terms) will be 37.
Calculations for the mean of a data set: Mean of the terms given in a data set is represented by the avarage of the terms.
Mean = [tex]\frac{\text{Total of the terms in a data set}}{\text{Numbers of the terms}}[/tex]
Total of the terms given in the the data set = 47 + 25 + 43 + 33
= 148
Number of terms in the data set = 4
Substitute these values in the expression of the mean,
Mean = [tex]\frac{148}{4}[/tex]
= 37
Therefore, mean of the data set given in the question is 37.
Learn more about the mean of a data set here,
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70 students per 2 teachers. How many students per teacher?
Answer:
35 students per teacher
Step-by-step explanation:
Answer:
35 students per teacher
Step-by-step explanation:
Divide 70 and 2
70/2=35
good at math & need points? help!!
Answer:
D
Step-by-step explanation:
There are 18 girls in Mr. Brimley's math class. If 40% of the students are girls, what is the best estimation for the number of boys in the class?
Answer:
27 boiz
Step-by-step explanation:
what will the equation be for this "Ryan is saving money to buy a skateboard that costs $85. He has already saved $40. He plans to save the same amount each week for three weeks. Let "x" represent the amount he saves each week. Write and solve an equation to represent this situation."
Answer:
weir
Step-by-step explanation:
7. Two friends worked out on treadmills at the gym. Laura walked 7 miles in
1.75 hours. Ricki walked 12 miles in 2 hours. How much faster did Ricki
walk? *
0.25 mile per hour faster
2 miles per hour faster
They walked the same speed.
He didn't, Leo walked faster.
Answer:
Step-by-step explanation:
Laura walked 7/1.75=4 miles per hour
Ricky walked 12/2=6 miles per hour
Ricki is 2 miles per hour faster
