Two students were shopping for school supplies. They need spirals which cost x dollars and pens which cost y dollars. One student bought 2 spirals and 3 pens for $8.66. Another student bought 4 spirals and 5 pens for $15.20. Find the unit cost of a spiral.
Answers
Answer:
x=1.15
y=2.12
Step-by-step explanation:
look at the picture ..........
Related Questions
Every person in a medical study is assigned a six-letter code, using only the letters A, B, C, and D. Which simulation tool(s) could be used to find the experimental probability that a code will have at least four A's?
random number list
colored discs
coin
die
Answers
Answer:
I don't know girl
Step-by-step explanation:
bc I don't know girl
Answer:ummm wht?
Step-by-step explanation:
simplify the following 7+(-10)
Answers
Answer:
-3
Step-by-step explanation:
Seven plus negative ten is the same as seven minus 10. 7-10=-3
Answer:
-3
Step-by-step explanation:
all you have to do is switch the 10 and 7 and you get -10+7. then subtract the two and use the sign of the bigger number which is a negative sign
Can someone help please??
If 3x−y=12, what is the value of
8x/2y ?
A) 2 to the 12th power
B) 4 to the 4th power
C) 8 to the 2nd power
D) The value cannot be determined from the information given.
Answers
Answer:
A) 2 to the 12th power
Step-by-step explanation:
[tex] \frac{8x}{2y} = \: \frac{ {2}^{3x} }{2y} = {2}^{12} [/tex]
A 64-ounce container of sports juice costs $6.50. A 48-ounce container of the same juice costs $4.25. Which juice container is the better buy.
Answers
Answer:
The juice container that is a better buy is the 48 ounce container because the price per ounce is lower.
Step-by-step explanation:
In order to determine the juice container that is the better buy, you have to find the one that has a lower cost per ounce by dividing the price of each juice container by the number of ounces it has:
64-ounce container: 6.50/64=0.10
48-ounce container: 4.25/48=0.08
According to this, the answer is that the juice container that is a better buy is the 48 ounce container because the price per ounce is lower.
Write the following mixed number as an improper fraction.
1 1/5
Answers
Answer:
6/5
Step-by-step explanation:
1 would equal 5/5 so add another 1 to get 6/5
What is the value of the 3 in 16.35 ?
Answers
Answer:
3 tenths
Step-by-step explanation:
The face and place value of 3 in the decimal number 16.35 is, 3 and 3×10⁻¹.
What is the standard decimal form of numbers?The standard decimal form of numbers is written in base 10 as there are 10 different numbers from 0 to 9.
Each digit has a face value and a place value.
We know, A number has two values face value and place value,
Given, A decimal number 16.35.
Now, The digit 3 is one digit after the decimal,
So, It has a face value of 3 and a place value of 3×10⁻¹.
learn more about face value and place value here :
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is this exponential growth or decay y=6e^-x
Answers
Answer: It's always decreasing/decaying.
Step-by-step explanation: To find if it is increasing or decreasing, graph the exponential problem.
1. Start at the top.
2. Look at the exponent.
The exponent is -x. Since negative means opposite/down, it goes down.Therefore, it's always decaying.
Figure ABCD is reflected across the y-axis.
What are the coordinates of A' B', C. and D'?
Enter your answer by filling in the boxes.
AOD
10-0-7
B'OD
D'OD
Answers
Answer:
yreflection in y-axis (x, y) → (-x, y) **the sign of the x-coordinate changes, the y value stays the same**
A'(1, 4)
B'(5, 8)
C'(5, 4)
D'(4, 2)
Step-by-step explanation:
Answer:
A'(1, 4)
B'(5, 8)
C'(5, 4)
D'(4, 2)
Step-by-step explanation:
took the test
Simplify: (4 – 5) – (13 – 18 + 2).
Answers
Answer:
2
Step-by-step explanation:
(4 - 5) - (13 - 18 + 2)
According to PEMDAS, we should simplify the parentheses first.
= (-1) - (-3)
When you subtract a negative number, you are actually adding.
= -1 + 3
Now, add.
= 2
Hope this helps!
the following two triangles are similar. Find the missing side length represented by x. Please help i am almost done.
Answers
Answer:
7 inches
Step-by-step explanation:
First, you make an imbalanced equation: 22.75/x=13/4. Then you cross multiply: 22.75 * 4= 91. Then divide 91/13 = 7.
Which shows the image of rectangle ABCD after the rotation (x, y) → (–y, x)?
Answers
Answer:
The answer is A
Step-by-step explanation:
I got it right
Answer:
Answer choice A is correct.
Step-by-step explanation:
I'm smort UwU
Determine the midpoint between the points (-3,-2) and (3,-8).
Answers
Answer:
(0,-5)
Step-by-step explanation:
What is the value of x in the equation 2.5(6x - 4) = 10 + 4(1.5 +0.5 x)?
3
이를
02
0 13
Answers
Answer:
Step-by-step explanation:
15x - 10 = 10 + 6 + 2x
15x - 10 = 16 + 2x
Bringing like terms on one side
15x - 2x = 16 + 10
13x = 26
x = 26/13
x = 2
The value of x in the equation is 2.
Option C is the correct answer.
What is an equation?An equation is a mathematical statement that shows that two expressions are equal.
It consists of variables, constants, and mathematical operations such as addition, subtraction, multiplication, division, exponents, and roots. Equations are used to solve problems and find unknown values.
We have,
We are given the equation 2.5(6x - 4) = 10 + 4(1.5 + 0.5x) and we need to find the value of x that satisfies this equation.
First, we can simplify both sides of the equation by using the distributive property of multiplication.
This gives us:
15x - 10 = 10 + 6 + 2x
Next, we can combine like terms on both sides of the equation. Specifically, we can combine the constants on the right-hand side:
15x - 10 = 16 + 2x
Now, we want to isolate the term with x on one side of the equation.
We can do this by subtracting 2x from both sides of the equation:
13x - 10 = 16
Finally, we can solve for x by adding 10 to both sides of the equation and then dividing both sides by 13:
13x = 26
x = 2
Therefore,
The value of x in the equation is 2.
Learn more about equations here:
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a: b = 2:7
a² = 36
Work out the two possible values of b.
Answers
Answer:
21
Step-by-step explanation:
Given:a²=36
a=✓36
a=6
a:b=2:7
6:b=2:7
can be written as
6/b=2/7
2b=6*7
b=6*7/2
b=21
HELPPP PLZ :(( I WILL MARK BRAINLIEST PLZZZ
Answers
Answer:
y = -3/2x + 2
The line starts on (0,2) and then it run 3 spaces down and 2 spaces to the right. Hope this helps, thank you !!
The probability of a fair coin landing heads-up in one toss is 1/2.If a coin is
tossed 20 times, how many times would the coin be expected to land heads-
up?
20
1
10
2
Answers
Answer:
10/20 because then it's still a 50 50 chance so the answer it 10
8 m (cubic meters) = dm3 (cubic decimeters)
Answers
Answer: 8000 dm³
Step-by-step explanation:
1 m³= 1000 dm³
----------------------------------------------------
Given
8 m³= dm³
Solve
8 m³ × 1000 dm³/m³=8000 dm³
Hope this helps!! :)
Please let me know if you have any questions
La suma de las edades de los hermanos Carlos y Felipe es igual a la edad de su tía María; Si María tiene 29 años y Carlos tiene 13 años, ¿Cuántos años tiene Felipe?
Answers
Answer:
16 años
Step-by-step explanation:
Si la suma de la edad de Carlos y Felipe es igual a la de Maria, y en la pregunta nos dan la edad de Maria (M) y Carlos (C), entonces tenemos que encontrar la edad de Felipe. Para calcular esto necesitamos restar la edad de Carlos de la edad de Maria. Esto nos dara la edad exacta de Felipe (f).
M - C = f
29 - 13 = f
16 = f
Finalmente, vemos que la edad de Felipe es de 16 años
PLEASE HELP ASAP!!
Please could I have the answers or step by step I don’t mind just PLEASEE help asap!!
Answers
5/15+ 9/15=9+5=14 so 14/15 (you keep the bottom the same) also it doesn’t need to be simplified because nothing can go into 14and 15 evenly
Same process for subtracting just subtract in the end so...
30/35-14/35= 16/35 also can’t be simplified evenly
In the end your answers are
1.14/15
2.16/35
-3x>18
(not in high school in middle school)
Answers
Answer:
x<-6
Step-by-step explanation:
-3x>18
Divide by -3, flip the sign since dividing by a negative.
x<-6
Answer:
x < -6
Step-by-step explanation:
Jay mows 1 lawn everyday Monday through Saturday.He is paid $25 for each lawn.How much money does jay earn mowing lawns ?
Answers
Answer: $150
Step-by-step explanation: do 25x6 on a calculator
4) easy- solve for x
Answers
Answer: - 8
Step-by-step explanation:
x/4 - 5 = -7
=> x/4 = -2
=> x = -8
Answer:
x=−8
Step-by-step explanation:
Add 5 to both sides
x/4-5+5=-7+5
x/4=-2
4x/4=4(-2)
x=-8
In September, Louise planted a tree. Every month, the tree Louise planted grew 2 inches. What would the constant of proportionality of the line be?
Answers
Answer:
i think it would be 2 inches
Step-by-step explanation:
How please help me and explain bc I have no clue how
Answers
Alan, Bobby and Chris are comparing their ages. The ratio of Alan's age to
Bobby's is 7: 8 and the ratio of Bobby's to Chris' is 5: 4. If Alan is 70, how
old is Chris?
Answers
Answer:
1638392772127273930337733930282823829393
Someone please help :( what is the slope??
Answers
Answer:
c 5/7Step-by-step explanation:
look up a slope calculator online
can u help me plss i’ll give u brainliest
Answers
Answer:
The answer is
Step-by-step explanation:
Can you do no7 doesn’t matter if u do just one part everything will help
Answers
b) 750
c) 500
d) 12500
e) 30000
f) 600
What is the equation for the line in slope -intercept form?
Answers
Answer:
I can't see it
Step-by-step explanation:
We need a bigger picture.
Please help asap!! I will mark you as brainliest :)
Answers
Answer: 46
Step-by-step explanation: