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dimulka [17.4K]
3 years ago
5

On Friday, a local hamburger shop sold a combined total of 309 hamburgers and cheeseburgers. The number of cheeseburgers sold wa

s two times the number of hamburgers sold. How many hamburgers were sold on Friday?
Mathematics
1 answer:
cupoosta [38]3 years ago
3 0
Divide 309 by 3. You should get 103 (hamburgers). if you multiply that by 2 you will get 206 (cheeseburgers). Add the two together you get the total which was 309 originally.
103 hamburgers and 206 cheeseburgers.
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sukhopar [10]
Answer explanation:
1/2
5 0
3 years ago
Based on a study of population projections for 2000 to​ 2050, the projected population of a group of people​ (in millions) can b
Olegator [25]

Answer:

(a) 0.107 million per year

(b) 0.114 million per year

Step-by-step explanation:

A(t) = 11.19(1.009)^t

(a) The average rate of change between 2000 and 2014 is determined by dividing the difference in the populations in the two years by the number of years. In the year 2000, t=0 and in 2014, t=14. Mathematically,

\text{Rate}=\dfrac{A(2014) - A(2000)}{2014-2000}=\dfrac{11.19(1.009)^14-11.19(1.009)^0} {14}

A(0)=\dfrac{12.69-11.19}{14}=\dfrac{1.5}{14}=0.107

(b) The instantaneous rate of change is determined by finding the differential derivative at that year.

The result of differentiating functions of the firm y=a^x (where a is a constant) is \dfrac{dy}{dx}=a^x\ln a. Let's use in this in finding the derivative of A(t).

A\prime(t) = \dfrac{A}{t}=11.19\cdot1.009^t\ln1.009

In the year 2014, t=14.

A\prime(14) =11.19\cdot1.009^14\ln1.009=0.114

6 0
3 years ago
What's the reciprocal of 4/11
guajiro [1.7K]
11/4 is the reciprocal
4 0
3 years ago
Read 2 more answers
Sara says, "If you subtract 15 from my number and multiply the difference by -5, the result is -105.” What is Sara’s number?
Semmy [17]

Answer:

-30

Step-by-step explanation:

let Sarah's number be X

x-15=15x

15x*-5=105

-75x=105

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X=-30

I think

hope it's helpful!

3 0
3 years ago
Help me plz idk how to do this :)
Anna35 [415]
Hey there :)
 
Without using a calculator it is not hard to identify where it lies.
√88 

Which are the perfect squares before and after √88 ?
√81 which is 9 and √100 which is 10

Therefore, √88 is between 9 and 10

In case you use a calculator, we can see that:
√88 = 9.38

9 < 9.38 < 10

\boxed {Your \ answer \ will \ be \ 9 \ and \ 10}
6 0
3 years ago
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