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I am Lyosha [343]
3 years ago
15

Marianne has been collecting donations for her biscuit stall at the school summer fayre. There are some luxury gift tins of bisc

uits to be sold at £5 each, normal packets at £1 each, and mini-packs of 2 biscuits at 10p each. She tells Amy that she has received exactly 100 donations in total, with a collective value of £100, and that her stock of £1 packets is very low compared with the other items. Amy wants to work out how many of each item Marianne has. Show how she can do it.
Mathematics
1 answer:
Nat2105 [25]3 years ago
5 0
Explain why dosea mountain climber needs an oxygen supply at very high altitude even through the air still contains 21% oxygen
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If Tanisha has ​$nbsp 100 100 to invest at 66​% per annum compounded semiannuallysemiannually​, how long will it be before she h
Oxana [17]

Answer:

time is 6.76 years

Step-by-step explanation:

given data

amount = $150

payment = $100

rate r = 6%  = 0.06

to find out

time period t

solution

we know it is compounding continuous

so we will apply here formula that is

amount = payment × e^{rt}   ..........1

put here all value we get

amount = payment × e^{rt}  

150 = 100 × e^{0.06t}  

take ln both side

ln 1.5 =  e^{0.06t}  

0.40546 = 0.06t

t = 0.40546 / 0.06

t = 6.76

so time is 6.76 years

7 0
3 years ago
A The number of tropical fish that an aquarium can hold depends on the volume of the fish tank. The interior dimensions of a fis
Delicious77 [7]

Answer:

7

Step-by-step explanation:

We need to first of all find the volume of the fish tank. The most probable shape the ship tank can have is that of a cuboid.

The volume of a cuboid is l * b * h

And this is equals 30cm * 70cm * 90cm = 189,000 cubic centimeters

The number of fish the tank can contain can be obtained by dividing the volume by the volume occupied by a single fish.

This is 189,000/27000 = 7

5 0
3 years ago
At the local bakery, Ariel bought 2 oatmeal cookies for $1.50. Mei bought 1/2 dozen oatmeal cookies for $4.50. Becky bought 8 oa
elena55 [62]

Answer: Yes. The cookies are $ .75 each. The total cost is proportional to the number of cookies purchased.

T = $.75 × c

Step-by-step explanation:

4 0
2 years ago
Consider the system of equations.
torisob [31]

Answer:

the second equation converted to slope-intercept form is y = -1/3x -1

Step-by-step explanation:

3 0
3 years ago
No links, No Wrong Answers, No Jokes, No Long Explanations.....
Harrizon [31]

Answer:

B (there is a negative correlation)

Step-by-step explanation:

the data set if you were put on a linear set, you be a negative and most of the points would fit through or around the slope. so it is a neagtive correlation

5 0
3 years ago
Read 2 more answers
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