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2 years ago

An item is regularly priced at $80 Barbado add a discount of 25% off the regular price how much did Bob pay

Mathematics

1 answer:

Mandarinka [93]2 years ago

8 0

Answer: $60

Step-by-step explanation:

Given

The price of an item is $80

The discount on it is 25%

Net payable price =Regular Price- discount

$\Rightarrow \text{Net Payable Price(P)}=80-25\%\ \text{of}\ 80\\\Rightarrow P=80(1-0.25)=80\times 0.75\\\Rightarrow P=\$60$

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A Cepheid variable star is a star whose brightness alternately increases and decreases. For a certain star, the interval between

fomenos

Answer:

0.41 (correct to 2 decimal place)

Step-by-step explanation:

If $B(t)=4.0+0.35sin\frac{2\pi t }{5.4}$

Let $u=\frac{2\pi t }{5.4}$ , then $B(u)=4.0+0.35sin u$

We want to determine the rate of increase $\frac{dB}{dt}$ after one day

$du=\frac{2\pi dt }{5.4}$ and $\frac{dB}{du} =0.35cos u$

$\frac{dB}{dt}=\frac{2\pi }{5.4}0.35cos (\frac{2\pi t }{5.4})=0.407cos (\frac{2\pi t }{5.4})$

$B^{'} (t)=0.407cos (\frac{2\pi t }{5.4})$

Rate of increase after one day, i.e. t=1

$B^{'} (1)=0.407cos (\frac{2\pi X 1 }{5.4})$ = 0.407 =0.41 (correct to 2 decimal place)

5 0

3 years ago

Find the TOTAL surface area.<br> *<br> 41 cm<br> 18 cm<br> 18 cm

Andreas93 [3]

Answer:

3600

Step-by-step explanation:

41*18*4=2952, 2952+(18*18*2)=3600.

6 0

3 years ago

Subtract: 12 3/8 - 8 1/5 <br><br> A) 4 2/3 <br> B) 4 1/20 <br> C) 4 2/13 <br> D) 4 7/40

Alecsey [184]

Find the common denominator.
12 15/40 - 8 8/40 = 4 7/40 and the answer is D. Hope it helps! If you could vote my answer as the brainiest, that would be awesome! :)

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2 years ago

(5x + ___)^2 = ___ · x^2+70xy + ___

RSB [31]

Step-by-step explanation:

$(5x + 7) { }^{2} = 25 {x}^{2} + 2(5)(7) + (49)$

3 0

3 years ago

Read 2 more answers

Divide £88 between Bill and Sam. If Sam gets

Lynna [10]

<h3>Answer: £66</h3>

Your teacher may want you to leave off the pounds sign.

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Explanation:

x = amount Bill gets

3x = amount Sam gets, because he gets three times as much

x+3x = 4x = total amount of money

4x = 88

x = 88/4

x = 22

Bill gets £22

3x = 3*22 = 66

Sam gets £66

Note that 22+66 = 88 to help confirm the answer.

4 0

2 years ago