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3 years ago

Work out the percentage change when a price of £20 is increased to £22.

Mathematics

2 answers:

pav-90 [236]3 years ago

8 0

Answer:

Step-by-step explanation:

20 increased to 22

20/22= 10%

10% of 20.00 is $2.00

2+20 = 22

alina1380 [7]3 years ago

7 0

22-20=2 2/20 = 1/10 = 10% change

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Find the final amount for the investment given you initially have $5500 earning

stich3 [128]

Is the final value
P is the initial principle
r is the (annual) interest rate (as a decimal)
t is time (years)

10500%2Ae%5E%28%28.0625%2A25%29%29

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3 years ago

Solve the right triangle, ΔABC, for all the missing side and angles to the nearest tenth given sides a = 10.6 and b = 19.2.

Aliun [14]

Answer:

Part 1) $c=21.9\ units$

Part 2) $B=61.1\°$

Part 3) $A=28.9\°$

Part 4) $C=90\°$

Step-by-step explanation:

step 1

Find the length side c

Applying the Pythagoras Theorem

$c^{2}=a^{2}+b^{2}$

substitute the given values

$c^{2}=10.6^{2}+19.2^{2}$

$c^{2}=481$

$c=21.9\ units$

step 2

Fin the measure of angle B

we know that

In the right triangle

$tan(B)=b/a$

substitute the given values

$tan(B)=19.2/10.6$

$B=arctan(19.2/10.6)=61.1\°$

step 3

Find the measure of angle A

we know that

The measure of interior angles in a triangle must be equal to 180 degrees

∠A+∠B+∠C=180°

Remember that in a right triangle the measure of angle C is 90 degrees

we have

$B=61.1\°$

$C=90\°$

substitute

$A+61.1\°+90\°=180\°$

$A=28.9\°$

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3 years ago

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Sloan [31]

Answer:

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Step-by-step explanation:

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3 years ago

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3 years ago

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likoan [24]

Answer:

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Step-by-step explanation:

there are 75 pages on her book

lilla read 1/5 of her book last week=1/5*75=15pages

this week she read 3times as much as she read last week=3*15=45pages

pages left to readcan be given as;

75-(15+45)

75-60= 15pages

3 0

3 years ago