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Akimi4 [234]
3 years ago
7

The price of a ring was increased by 9% to £1800. What was the price before the increase? Give your answer to the nearest penny.

Mathematics
2 answers:
Alla [95]3 years ago
6 0

Answer:

see steps

Step-by-step explanation:

New price  was increase from 100% to 109% at £1800.

By proportionality,

old price / 100% = 1800 / 109%

Cross multiply to get

old price = $1800 * 100% / 109% = £1651.38

Firlakuza [10]3 years ago
4 0
I do not know just need answers really hard questions
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-x + 6y = -8 <br> x-6y=8
PilotLPTM [1.2K]

Answer:

inifinitely many solutions

Step-by-step explanation:

3 0
2 years ago
Please help me figure out this problem
tiny-mole [99]

Answer:

f(g(x))=f\left(-\dfrac{3x+21}{5}\right)=x\\\\g(f(x))=g\left(-\dfrac{5}{3}x-7\right)=x

Step-by-step explanation:

Fill in the given expressions and simplify.

f(g(x))=f\left(-\dfrac{3x+21}{5}\right)=-\dfrac{5}{3}\left(-\dfrac{3x+21}{5}\right)-7\\\\=\left(-\dfrac{5}{3}\right)\left(-\dfrac{3x}{5}\right)-\left(\dfrac{5}{3}\right)\left(-\dfrac{21}{5}\right)-7\\\\=\dfrac{15x}{15}+\dfrac{5\cdot 21}{3\cdot 5}-7=x+7-7=x

Going the other way, we have ...

g(f(x))=\displaystyle -\frac{3\left(-\frac{5}{3}x-7\right)+21}{5}=-\frac{-5x-21+21}{5}=x

5 0
3 years ago
Please help I am struggling really bad thank you so much
Pavlova-9 [17]

Answer:

1) A

2) A

3) C

Step-by-step explanation:

7 0
1 year ago
Read 2 more answers
I’m struggling on both of them can you give both answers
Leona [35]

4.16 hours and 4 cups

Step-by-step explanation:

10. To find the % of something simply turn 5/6 in to a decimal (.83) then times it by the number you want .83 * 60 = 50 so its about 50 min each class, just times it by 5 =250 and lastly divide it by 60 for hours <u>4.16</u>

11. Simply times it by 6, 2/3*6= <u>4</u><u> </u><u>c</u><u>u</u><u>p</u><u>s</u>

4 0
3 years ago
Read 2 more answers
A cone has a radius of 1 foot and a height of 2 feet. How many comes of Liquid would it take to fill a cylinder with a diameter
maks197457 [2]

find the volume of the cone:

1/3 pi r squared × h

1/3 pi (1) squared × 2

= 2/3 Pi (feet cubed)

find the volume of the cylinder:

pi r squared × h

(the radius is 1 foot because its half the diameter which is 2 feet)

pi (1) squared × 2

= 2 Pi (feet cubed)

2 Pi is÷ 2/3 Pi

= 3

therefore it will take 3 cones of liquid to fill a cylinder with a diameter of 2 and height of 2

7 0
3 years ago
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