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Elodia [21]
2 years ago
10

3 friends went to a coffee shop. Each of them got a muffin and two cups of coffee. The total cost of the order was $21.75. If a

muffin is $3.25, write an equation to solve for c, the cost of 1 cup of coffee
Mathematics
1 answer:
Pavlova-9 [17]2 years ago
6 0

Answer:I think it’s 3.25(3)+6c=$21.75, I’m not sure

Step-by-step explanation:

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The director of the library believes that 14% of the library's collection is checked out. If the director is right, what is the
Ksivusya [100]

Answer: 0.2643

Step-by-step explanation:

Let p be the population proportion and \hat{p} be the sample proportion .

As per given question , we have

p=0.14\\\\ \hat{p}=0.13\\\\ n=478

z-score : \dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}

z=\dfrac{0.13-0.14}{\sqrt{\dfrac{0.14(1-0.14)}{478}}}\\\\=-0.630087269176\approx-0.63

The required probability ( using z-table ):-

P(z

Hence, the probability that the proportion of books checked out in a sample of 478 books would be less than 13% = 0.2643

5 0
3 years ago
What is the sum of 2/7 + 2/5 ?<br> please help 10 points and brainlest
omeli [17]

Answer:

2/7 + 2/5=24/35

5 0
2 years ago
Can someone please help me with this!! I will award brainliest and 15 points for best answer!!
vekshin1
By using Nathan's expression, Mitchel should have received 2 1/4 pounds of lemon drops. By using Darren's expression, Mitchel should have received  2 1/4 pounds of lemon drops. The difference in the amount of lemon drops Mitchel should have received using Nathan's expression instead of Darren's expression is 0 pounds.
6 0
3 years ago
Pamela is 15 years younger than Jiri. The sum of their age is 33. what is Jiris age
Luden [163]

Answer:

24 years

Step-by-step explanation:

let jiri's age be x

Pamela's age=x-15

x+x-15=33

2x-15=33

collect the like terms to similar places

2x=33+15

2x=48

x=24

6 0
2 years ago
5 x 10 to the 6th power is how many times larger than 5 x 10 to the 4th power. PLEASE RESPOND FAST
Alexandra [31]

Answer:

5 x 10 to the 6th power is 5,000,000

5 x 10 to the 4th power is 50,000

5,000,000 / 50,000 = 100

it is 100 times larger

Step-by-step explanation:

8 0
3 years ago
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