The students are selling cookies at a school fair.sara is selling 3 chocolate chip cookies for $2.49 .
a)if you wanted to buy one cookie from Sara how much would it cost ?
b) how much would it cost to buy20 of Sara's cookies ?
show your work and explain you reasoning .
Answers
3 chocolate chip cookies - $2.49 .
So 1 chocolate chip cookies costs 2.49/3=$0.83
b)
1 chocolate chip cookie costs $0.83
20 chocolate chip cookies cost 0.83*20=$16.6
Related Questions
A bottlenose dolphin is 10 feet below sea level. Then it begins to dive at a rate of 9 feet per second. What is the equation of the line that represents its elevation, y, after x seconds?A. y = 9x − 10B. y = -9x − 10C. y = 9x + 10D. y = -9x + 10
Solving Systems of Equations by substitution-5x-8y=172x-7y=-17
If you were given the function f(x) and its inverse function,, what would you expect the values of to be, assuming that 3 is part of the domain of f(x)? Explain your answer.
1 is 5% of what number?
39F=? C rounded to the nearest tenth of a degree
Answers
To convert temperatures in degrees Fahrenheit to Celsius, subtract 32 and multiply by .5556 (or 5/9).
5F= -15C
39F= 3.9C
Here's how you can convert Fahrenheit to Celsius:
1. First, we need to subtract 32 from the Fahrenheit temperature.
For 5F, we would do 5 - 32 to get -27.
For 39F, we would do 39 - 32 to get 7.
2. The next step in our conversion process is to multiply the result by 5/9.
For -27, we would do (-27 * 5/9) to get -15.
For 7, we would do (7 * 5/9) to get approximately 3.888888888889, but we want our result rounded to the nearest tenth of a degree. Thus, we round this value to 3.9.
So, to convert 5F to Celsius you get -15C and to convert 39F to Celsius you get 3.9C.
Answers
1000i = 17
i = 17/1000
i = 0.017
0.017 = 1.7%
answer: annual simple interest rate is 1.7%
Work:
r=17/(500*2)
r=17/1000
r=0.017
To change to a percentage, move the decimal point in 2 times.
Final Answer: 0.017 OR 1.7%
Answers
Answer: $11.81✔️cost of the sandwich before tax
Step-by-step explanation:
Let C = cost before tax
Cell phone costs = C + C·5% = $12.40
C(1 + 0.05) = $12.40
C = $12.40/1.05 = $11.81 , cost before tax
Answer: $11.81✔️ cost of the sandwich before tax
Checking
Cell phone after tax = $11.81 + $11.81·5/100
Cell phone after tax = $11.81 + $0.59 = $12.40✔️checked!
Spymore
Answers
sq ft; L=length;
W=width=3 2/3 ft
3 2/3 ft=11/3 ftA=L*WA/W=L
22sq ft/(11/3)ft=L
6ft=L
So the length (height) of the poster is 6 feet.
i hope i helped
Answers
Answer:
degrees Celsius.
Step-by-step explanation:
Let x represent number of kilometers.
We have been given that the temperature decreases by 6.8 degrees Celsius for every increase of 1 kilometer above the ground. So temperature decreased in x hours would be .
The ground temperature at Brigham Airport is 12 degrees Celsius. The temperature at an altitude of x kilometers would be .
To find temperature outside a plane flying at an altitude of 5 kilometers, we will substitute in our expression as:
Therefore, the temperature outside a plane flying at an altitude of 5 kilometers would be degrees Celsius.
6.8 times 5 is 34
since 34 is bigger than 12, you take 12 from 34 and add a negative sign, and that would be -22.
You can use a calculator if u want and is allowed too. :)