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3 years ago

Increase £500 by 3.2% how do you work it out

Mathematics

1 answer:

yan [13]3 years ago

8 0

£500·(1+3.2%)=£500 + £500·3.2%=£500 + £500·3.2/100 = £500 + £5·3.2 = £500 + £16=£516.

Green eyes.

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At noon, ship A is 130 km west of ship B. Ship A is sailing east at 25 km/h and ship B is sailing north at 20 km/h. How fast is

Hitman42 [59]

Answer:

answer = 12.87 km/h

Step-by-step explanation:

Given

Ship A is sailing east at 25 km/h = $\frac{dx}{dt}$

ship B is sailing north at 20 km/h = $\frac{dy}{dt}$

here x and y are the sailing at t = 4 : 00 pm for ship A and B respectively

so we get x = 4 ×25 =100 km/h

y = 4× 20 = 80 km/h

let z is the distance between the ships, we need to find $\frac{dz}{dt}$ at t = 4 hr

At noon, ship A is 130 km west of ship B (12:00 pm)

so equation will be

$z^2 = (130-x)^2 + y^2......................(i)\\put x = 100 and y = 80 \\\\we | | get \\$

$z^2 = 30^2 + 80^2\\z =\sqrt{7300} km/h$

derivative first equation w . r. to t we get

$2z\frac{dz}{dt} =$ $-2(130-x)\frac{dx}{dt}$ $+2y\frac{dy}{dt}$

$\frac{dz}{dt} =\frac{1}{z}[(x -130)\frac{dx}{dt} +y\frac{dy}{dt}]$

$\frac{dz}{dt} = \frac{( -20\times25 + 80\times20)}{\sqrt{7300} }$

$= \frac{1100}{85.44}\\ = 12.87km/h$

8 0

3 years ago

Enter an equation to find three numbers with the following properties. Let x be the first number. The second number is 6 more th

krok68 [10]

Answer:

-7, -1, -7

-6, 0, 0

Step-by-step explanation:

x+6

7(x+6)

7(x+6)+ x(x+6) = 0

(x+6)(7+x) = 0

x = -6, -7

-6, 0, 0

-7, -1, -7

4 0

3 years ago

Read 2 more answers

Which is bigger 2/7 or 4/7

elena-14-01-66 [18.8K]

Answer:

4/7 is larger than 2/7

Step-by-step explanation:

2/7 is 2÷7

4/7 is 4÷7

3 0

3 years ago

Find the new amount 2000 miles increased by 33%

Goryan [66]

Answer:

$2,660\ miles$

Step-by-step explanation:

we know that

The amount of 2,000 miles represent 100%

If the amount is increased by 33%

then

The new percent of the amount will be

100%+33%=133%

using proportion

$\frac{2,000}{100\%}=\frac{x}{133\%}\\\\x=2,000(133)/100\\\\x=2,660\ miles$

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3 years ago

Write 658.129 in expanded form?

kolezko [41]

Write 658.129 in expanded form.

600 + 50 + 8 + .1 + .02 + .009

600 + 50 + 8 + .1 + .02 + .<span>009 = 658.129
</span>
658.129 in expanded form is
600 + 50 + 8 + .1 + .02 + .<span>009.</span>

8 0

3 years ago