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Elan Coil [88]
2 years ago
13

The price of a computer was decreased by 7% to £500. What was the price before the decrease? Give your answer to the nearest pen

ny.
Mathematics
1 answer:
makkiz [27]2 years ago
5 0

Answer:

£ 537.63

Step-by-step explanation:

original price = 100%

selling price = 100% - 7% = 93% = £500

just do the proportion or ratio

\frac{100\%}{93\%}  =  \frac{original \: price}{500}

OP = 500 x 100% / 93%

OP = £ 537.634

rounded to the nearest penny and become £ 537.63

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What is the value of k in the equation 2/7(k+5/8)=2 2/7
shusha [124]
2/7 ( k+5/8) = 2 and 2/7

2/7 (k+5/8) = 16/7     |multiply by 7

2(k+5/8) = 16     |divide by 2

k+5/8 = 8     |subtract  5/8

k=8-5/8 = 7 and 3/8 = 27/8 = 7.375 


7 0
3 years ago
Can anyone help me with this, I’ll give out brainliest. NO LINKS.
Sliva [168]

Answer:

89.132 inch

Step-by-step explanation:

“this shape is made up of one half-circle attached to a square with side lengths 16 inches. You can use 3.14 as an approximation.”

so, the square has a perimeter of 16 inch, four sides that will be 64 inch

then the half circle rule of perimeter of half circle: πr + 2r

=> perimeter of semicircle = π * 8 +2 * 8 = 41.132 inch

<em>without the bottom line of half circle= 41.132 -16 = 25.133 inch</em>

<em />

So total 25.133 + 64 =89.132 inch

have a great day and nc question

4 0
2 years ago
For every 2 miles Joan runs, Stacy runs 3 miles. How far will Stacy have run if Joan runs 24 miles?
oee [108]
Stacy will run 72 miles.

6 0
3 years ago
Read 2 more answers
Use Euler's formula to write 3+3i^3 in exponential form.
Alex_Xolod [135]

21−=2(2−)=2cos(−1)+2 sin(−1)

−1+2=−1(2)=−1(cos2+sin2)=cos2+ sin2

Is the above the correct way to write 21− and −1+2 in the form +? I wasn't sure if I could change Euler's formula to =cos()+sin(), where is a constant.

complex-numbers

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edited Mar 6 '17 at 4:38

Richard Ambler

1,52199 silver badges1616 bronze badges

asked Mar 6 '17 at 3:34

14wml

23122 silver badges99 bronze badges

Add a comment

1 Answer

1

No. It is not true that =cos()+sin(). Notice that

1=1≠cos()+sin(),

for example consider this at =0.

As a hint for figuring this out, notice that

+=ln(+)

then recall your rules for logarithms to get this to the form (+)ln().

8 0
3 years ago
Mass of a car
In-s [12.5K]

Answer:

1,200 kilograms

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
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