The cost of one box of paper clips is $1.85 and the cost of one package of index cards is $3.95
Step-by-step explanation:
Eldora and Finn went to an office supply store together
Eldora bought 15 boxes of paper clips and 7 packages of index cards for a total cost of $55.40
Finn bought 12 boxes of paper clips and 10 packages of index cards for a total cost of $61.70
We need to find the cost of one box of paper clips and the cost of one package of index cards
Assume that the cost of one box of paper clips is $x and the cost of one package of index cards is $y
∵ x represents the cost of one box of paper clips
∵ y represents the cost of one package of index cards
∵ Eldora bought 15 boxes of paper clips and 7 packages of
index cards for a total cost of $55.40
∴ 15x + 7y = 55.4 ⇒ (1)
∵ Finn bought 12 boxes of paper clips and 10 packages of
index cards for a total cost of $61.70
∴ 12x + 10y = 61.7 ⇒ (2)
Now we have system of equations to solve it
Multiply equation (1) by -10 and equation (2) by 7 to eliminate y
∵ -10(15x) + -10(7y) = -10(55.4)
∴ -150x - 70y = -554 ⇒ (3)
∵ 7(12x) + 7(10y) = 7(61.7)
∴ 84x + 70y = 431.9 ⇒ (4)
Add equations (3) and (4)
∵ (-150x + 84x) + (-70y + 70y) = (-554 + 431.9)
∴ -66x = -122.1
- Divide both sides by -66
∴ x = 1.85
Substitute the value of x in equation (1) or (2) to find y
∵ 12(1.85) + 10y = 61.7
∴ 22.2 + 10y = 61.7
- Subtract 22.2 from both sides
∴ 10y = 39.5
- Divide both sides by 10
∴ y = 3.95
The cost of one box of paper clips is $1.85 and the cost of one package of index cards is $3.95
(this is an answer I got previously)
Paul sketches a right triangle with legs of lengths a and b and a hypotenuse of length h. He writes an equation that relates a, b, and h, and then solves it for h. Which of the following is the solution for h that Paul writes?
Answer:
B. H=[tex]\sqrt{a^2 + b^2}\\[/tex]
Step-by-step explanation:
HELP HURRY WHat is the answer.
Answer:
your answer should be the 3rd one srry I'm so late
find the diameter of the circle
Answer:
50
Step-by-step explanation:
The diameter is twice the radius
Diameter of circle = radius of circle × 2
= 25 × 2
= 50 yd
HOPE IT HELPS :)
1. Lionel wants to compare the heights of his plants. What type of graph ou.ld be best for him to use? *
pie or circle graph
line graph
bar graph
Other:
2. Kathy records how many cars of each color are in the parking lot and then turns those into percentages. What kind of graph should she use?
pie or circle graph
line graph
bar graph
Other:
3. Find the mean of these numbers:5,11,2,12,4,2
4.1
4.5
6
4
4. 3, 4, 5, 5, 5, 6,7 The range of these numbers is ...
15
4
5
2
Other:
5. In order to find the median, the data must be sorted from least to greatest first.
True
False
Option 3
6. You use this type of graph when comparing a change over the course of time *
pie or circle graph
line graph
bar graph
Other:
7, A middle school has 6th grade, 7th grade, and 8th grade teachers. The principal wants to determine what supplies to order for the supply closet. Which of the following represents a random sample of teachers?
a. Surveying all the math teachers
b. Surveying all the teachers who have bus duty
c. Surveying all the teachers who are married
d. Surveying every fifth teacher according to the staff directory on the school website
8. A student wants to know which type of of pizza high school students perfer. Which of the following options is a good, representative sample of the population?
Asking all the 10th graders in the school
Asking the school principal which type of pizza he perfers
Asking 20 students from each grade level
Asking the students who walk to school
Other:
Answer:bar graph
Step-by-step explanation:because it is easier to record on a bar graph and pie and line graph are harder to read when recording things. Hope this helps
The students in one social studies class were asked how many brothers and sisters (siblings) they each have. The dot plot here shows the results. How many of the students have six siblings? 3
4
1
2
Answer:
1
Step-by-step explanation:
this is because if you look at the scatter plot count up the amount over 6 there is 1 dot meaning 1 student
Answer: 1.
Step-by-step explanation:
Which expression is equivalent to this fraction?
a. 19-5
b. 5-19
c. 5÷19
d. 19÷5
Answer:
C
Step-by-step explanation:
[tex]5 \div 19[/tex]
think of
5/19 as in and out. 5 would be inside 19 would be on the outside. Therefore
5÷19 is equivalent to
[tex] \frac{5}{19} [/tex]
And i nee help in MORE QUESTIONS
Answer:
The true statements are C and D
Step-by-step explanation:
Find the mean temperature of both cities (the workings would take up too much space but to find the mean add the average daily temperature for each month together then divide the answer by 12. This means that the mean for city A is 46.5 degrees Fahrenheit and for City B it is 64.9 degrees Fahrenheit.For the range, you subtract the lowest daily average temperature in the month from the highest one, therefore for City A it is 90-2=88 degrees Fahrenheit and for City B it is 88-30=58 degrees Fahrenheit.From finding out the mean temperature and range for both cities, that allows you to rule out all the statements as false except for C and DSOMONE HELPPPP PLEASEE!!
Answer:
animal weights 15 pounds at birth
please make this answer brainliest If I helped you!
Answer:
animal weights 15 pounds at birth
Step-by-step explanation:
Rule 1: Subtract 4 starting from 20.
Rule 2: Subtract 3 starting from 20.
What would the coordinate pair be?
Answer:rule 1 is 16
rule 2 is 17
Step-by-step explanation:
Niguel is using the video game controller shown. The game Maguire is playing has a very special moves that require pressing two lettered buttons at the same time. how many 2-button special moves are possible with a controller?
A. 16
B. 720
C. 30
D: 15
I need help please!!!!!!!
Answer:
Ray HF is not shown in the drawing.
Ray FH is ccorrect, but HF is not.
2. Trina increased the water in her new backyard fish pond by forty gallons and needs to add more. Her
pond can hold a maximum of 256 gallons. Her garden hose can add 48 gallons of water in 2 minutes.
Write an inequality in terms of m to represent the number of minutes Trina can run the water hose to
add more water to the pond without adding the maximum amount in case of rain.
Answer:
A) 24*m + 40 ≤ 256
B) She could leave the house running for at most 9 minutes
Step-by-step explanation:
PLEASE HELP ASAP
Select from the drop-down menus to correctly complete each statement.
Quadrilateral ABCD can be mapped onto quadrilateral EFGH with a ____ followed by a ___. The figures are___.
Answer: Dilation followed by a rotation & they are similar.
Step-by-step explanation:
Whoever gets it right can have brainliest but answer ASAP!
Answer:
3 1/3
Step-by-step explanation:
Multiply
2 1/2 * 1 1/3 = 20/6
Simplify
20/6 = 10/3 = 3 1/3
Answer:
20/6=10/3= 3 1/3
Step-by-step explanation:
3 1/3 =10/3 just simplifed
I will give brainliest
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
bike 2 5 (2,5)
top hat 4 2 (4,2)
ball 4 9 (4,9)
pogo stick 9 9 (9,9)
bear 10 2 (10,2)
Answer:
Step-by-step explanation:
bike 2 5 (2,5)
top hat 4 2 (4,2)
ball 4 9 (4,9)
pogo stick 9 9 (9,9)
bear 10 2 (10,2)
negative decimals on the number line 5
Answer:
B
Step-by-step explanation:
Since there is 10 lines separating -3 and -4, that means the space between 2 lines in 1 tenth, and b is 3.5 lines away from -3. Making it -3.35
have a nice day :)
Answer:
B
Step-by-step explanation:
Each section represents 0.1
You would count 3 sections to the left of -3 because -3.35 is less than -3. You would end up at -3.3. Move to the left half a section for 0.05 and you would end up at point B, which is equal to -3.35.
I hope this helps and please mark me as brainliest!
Marla wanted to train to run a 6 mile race. How many days did it take her to reach 6 miles?
She reached her goal on the 26th day.
She reached her goal on the 29th day.
She reached her goal on the 30th day.
She reached her goal on the 27th day.
Given the distance Maria ran each day, the total distance she ran during a fifteen ( 15 ) days strech is 55.5miles.
What is multiplication?In mathematics, multiplication is a method of finding the product of two or more numbers. It is one of the basic arithmetic operations, that we use in everyday life.
here, we have,
Expression for the Total of Distance ran by Maria
Total distance = Distance ran each day × Number days
Given the data in the question;
Distance ran each day by Maria Dm = 3.7miles
Number days ran n = 15days
Total number of distance ran by Maria TDm = ?
Total distance = Distance ran each day × Number days
TDm = Dm × n
We substitute in our values
TDm = 3.7miles × 15
TDm = 55.5miles
Given the distance Maria ran each day, the total distance she ran during a fifteen ( 15 ) days strech is 55.5miles.
Learn more about multiplication here:
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complete question:
Marla ran 3.7 miles a day for 15 days straight. How many miles did Marla run altogether during the 15 day stretch?
which number line shows the solution of 5x-25<-15?
givning brainliest
Answer:
x < 2
Step-by-step explanation:
5x-25<-15
Add 25 to each side
5x-25+25<-15+25
5x < 10
Divide by 5
5x/5 < 10/5
x < 2
Open circle at 2 line to left
Point A is 6 units away from the origin. Select all possible coordinates of point A.
A. (6,6)
B. (6,1)
C. (6,0)
D. (1,6)
E. (0,6)
please help me? < 3 (8th grade)
Answer:
x= −2 and y=2
Step-by-step explanation:
First graph it onto the coordinate plane. Wherever they intersect, those coordinates are the answer.
To graph the equation,
1) Plot the y-intercept
2) Depending on whether the slope is positive or negative, go up or down and left or right from the y-intercept.
Seven thirteenths of the bones in the feet are toe bones. Write and simplify an expression that gives the fraction of the bones in a typical human body that are feet bones but not toe bones. Explain.
Answer:
12/103
Step-by-step explanation:
(7/13)*52=28
28 bones in the feet are toe bones.
52-28=24
24 bones in the feet are not toe bones.
24/206
simplify
12/103 bones in human body are feet bones but not toe bones
A penny is about 1/16th of an inch thick. The distance from the moon to the earth is about 239,000 miles. What is the exact number of pennies needed to be in a stack in order to reach the moon?
Answer:
15,143,040,000 (fifteen trillion one hundrend fourty-three billion fourty thousand
Step-by-step explanation:
for every mile their are 63360 inches.
63360*239,000=15143040000
A. Reflect triangle TRX across the x-axis to form triangle T'R'X'.
B. If triangle TRX is rotated 180 degrees to form triangle T'R'X', what are the coordinates of point X.
Answer:
X' = (-2, 4)
Step-by-step explanation:
If you reflect the triangle over the x-axis you find that X' is (-2, 4). If you would like the image, you can ask me.
in 2014 the price of a forever stamp from the United States Postal Service was 0.49 how many forever stamps Can Alyssa buy for 30.38
please help me with this! i’ll give you brainlist or whatever it’s called just help
Answer:
-2, -1, 0, 1, 2
Step-by-step explanation:
-4/2=-2
-2/2=-1
0/2=0
2/2=1
4/2=2
Please answer this math problem sceenshot below
Answer:
3 and 4 it is 60
is the answer
if you like my answer please like comment and mark me as brilliant
PLEASE HELP DUE IN 5 MIN
The value of output for value of input of 200 is,
⇒ y = 1025
What is an expression?Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
We have to given that;
The table shows the outputs for several inputs.
Now, We can find the expression for the table as;
Take two points are (0, 25) and (1, 30)
Hence, The equation is,
y - 25 = (30 - 25) / (1 - 0) (x - 0)
y - 25 = 5x
y = 5x + 25
Hence, The value of output for value of input of 200 is,
y = 5 × 200 + 25
y = 1000 + 25
y = 1025
Thus, The value of output for value of input of 200 is,
⇒ y = 1025
Learn more about the mathematical expression visit:
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Whoever answers correctly can have brainliest
but answer asap
Answer:
The last one only when you have a fraction division problem:keep change flip
Step-by-step explanation:
hope that helps
Answer:
false you only flip the second fraction when you have a fraction division problem
Step-by-step explanation:
Please help! I’m soooooo confused
The number of purple T shirts that the Trenton's scouting group made is 15.
What is a Pie Chart?A pie chart is a type of graph where a circle is divided into certain sectors where each sector shows a proportion of the whole.
Given is a pie chart or circle graph.
This shows the number of different colored T shirts that the Trenton's scouting group made.
Total number of T shirts = 100
Total degree of a circle = 360°
The circle is divided in to various sections with each section of different degree.
Angle measure for the purple section = 54°
Proportion of purple T shirts to the full T shirts = 54 / 360
= 0.15
Number of purple T shirts in total of 100 T shirts = 0.15 × 100
= 15
Hence the number of purple T shirts made is 15.
Learn more about Pie Charts here :
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What is the area of this quadrilateral?
Answer:
C, 48 square feet
Step-by-step explanation:
Area of trapezoid is [tex]\frac{b_1+b_2}{2}\cdot h[/tex], where b1 and b2 are the two bases.
The top base is 9, while the bottom base is 9+3+3=15.
9+15/2 = 12 * 4 = 48.
Answer:
your answer would be D. 36 square feet