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2 years ago

Emma buys a house for £201 500

Mathematics

2 answers:

Novay_Z [31]2 years ago

4 0

Answer:

Step-by-step explanation:

$\frac{213590 - 201500}{201500} = \frac{12090}{201500} = 6$

lisabon 2012 [21]2 years ago

3 0

Answer:

Step-by-step explanation:

Original price = £201 500

Selling price = £213 590

The profit equals = Selling price - Original price

213590 - 201500 = 12090

The profit is £12090.

The profit percent equals = Profit/Original price × 100

12090/201500 × 100

6/100 × 100 = 6

The profit percentage was 6%

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A simple off bacteria is debating according to the half life model. If the simple begins with 800 bacteria, and after 18 minutes

Reika [66]

Answer:

After 43 minutes, the bacteria will be 40 remainings.

Step-by-step explanation:

Given that:

Initial population of bacteria $A_o$ = 800

After time (t) = 18 mins

A = 240

Using the model:

$A = A_o e^{k*t}$

$240=800 e^{k*18}$

$\dfrac{240}{800}= e^{18k}$

$0.3= e^{18k}$

By applying natural log on both sides, we get:

In(0,3) = 18k (In e)

- 1.20397 = 18 k * (1)

18 k = -1.20397

k = -1.20397/ 18

k = - 0.06688

k ≅ -0.07

After time (t), the bacteria population (A) = 40

Now;

$40 = 800 e^{k*t}$

$\dfrac{40 }{800}= e^{-0.07*t}$

$0.05= e^{-0.07*t}$

In (0.05) = -0.07t * In (e)

- 2.9957 = - 0.07t

t = - 2.9957/ -0.07

t = 42.795

t ≅ 43 minutes

Thus, after 43 minutes, the bacteria will be 40 remainings.

4 0

2 years ago

The rectangular parking lot shown below has a total area of (4x + 36) square feet. Which could be the dimensions of the Parking

Nimfa-mama [501]

Answer:

If the expression cannot be factored, write cannot be factored. 13. 4x + 12. 14. 8r - 14. 15 GEOMETRY The rectangle shown. 26. FUNDRAISING The Art Club receives below has a total area of (4x + 36). $10 plus $2 ... square feet. Factor 4x + i did it and a diffrent form can this help ?

Step-by-step explanation:

3 0

2 years ago

Mr. Gardener invested $500,000. His annual interest was $40,000. What was the annual interest rate?

Mademuasel [1]

Answer: The annual interest rate r= 8%

Step-by-step explanation:

Given: The invested amount = $500,000.

The annual interest = $40,000

The annual interest rate is given by :-

$r=\frac{\text{interest}}{\text{invested amount}}\times100\\\\\Rightarrow\ r=\frac{40,000}{500,000}\times100\\\Rightarrow\ r=\frac{4}{50}\times100\\\\\Rightarrow\ r=8\%$

Hence, the annual interest rate r= 8%

7 0

2 years ago

Read 2 more answers

An online store holds a sale.Of the 500 customers who make a purchase during the sale,60 use a coupon.What percent of the custom

balandron [24]

Answer:

88%

Step-by-step explanation:

60/500 people use a coupon

440/500 people do not use a coupon.

We can reduce the fraction: 440/500

220/250

then again

110/125

and /5 again.

22/25

then both sides by 4.

88/100

there, 88%

6 0

2 years ago

Read 2 more answers

What is 5 1/6 minus 1 1/3

zaharov [31]

We must find the common denominator.

LCM(6, 3) = 6

$5\dfrac{1}{6}-1\dfrac{1}{3}=5\dfrac{1}{6}-1\dfrac{1\cdot2}{3\cdot2}=5\dfrac{1}{6}-1\dfrac{2}{6}=(5-1)+\left(\dfrac{1}{6}-\dfrac{2}{6}\right)=4-\dfrac{1}{6}=3\dfrac{5}{6}$

or other method of calculating the difference

$5\dfrac{1}{6}-1\dfrac{2}{6}=4\dfrac{6+1}{6}-1\dfrac{2}{6}=4\dfrac{7}{6}-1\dfrac{2}{6}=(4-1)+\left(\dfrac{7}{6}-\dfrac{2}{6}\right)=3\dfrac{5}{6}$

7 0

2 years ago