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shutvik [7]
4 years ago
7

Joe has some pocket money.He spends 50% of it.He then had another £1.50.He has 75p left.How much pocket money did he have

Mathematics
1 answer:
dsp734 years ago
8 0
 Joe has his pocket money is 4.5 pounds


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Roland bought a dresser for k dollars. After restoring it, he sold it for 3.1k dollars. Which is another way to describe the cha
xxMikexx [17]

Answer: 210 percent increase

Step-by-step explanation: So w know the starting value is k so we can replace it with 1 dollar

now we know he bought the dresser for 1 dollar and sold it for 3.10 dollars

First we have to subtract the starting value 3.1 - the original value

3.1 - 1 = 2.1

then we have to divide that number by the starting value

2.1 divided by 1 = 2.1

Lastly multiply times 100 to get the percent increase

2.1 x 100 = 210 % increase

hope this helps mark me brainliest if it helped

6 0
4 years ago
Pleas answer number 1 ( URGENT )
vesna_86 [32]
Do you know how to add fractions? let me know if u dont
6 0
4 years ago
A park is in the shape of a rectangle. The park authorities are planning to build a 2-meter-wide jogging path in the park (shown
Burka [1]
First, we need to find the area of the two rectangles in this picture. We know that area = l*w.

So for the larger rectangle, we know the l = 100 m, and the w = 60 m. Let us find the area:

A=100*60=6000 m^{2}

So the larger rectangle area is 6000 m.

The smaller rectangle has dimensions that are 2 m less on every side. So we can recalculate these dimensions as l = 96 m and w = 56 m.

Let's find the area of the smaller rectangle:

A=96*56=5,376 m^{2}

So we know that the area of the smaller rectangle is 5,376 m.

The area of the jogging path is going to be the difference between these two rectangles. Let us solve:

6,000-5,376=624 m^{2}

So now we know that the area of the jogging path is 624 m^{2}.
5 0
4 years ago
Researchers recorded that a certain bacteria population declined from 200,000 to 900 in 18 hours. At this rate of decay,
salantis [7]

Answer:

9,942 bacteria were there at 10 hours.

Step-by-step explanation:

Equation for population decay:

The equation for population decay, after t hours, is given by:

P(t) = P(0)(1-r)^t

In which P(0) is the initial population and r is the decay rate, as a decimal.

Researchers recorded that a certain bacteria population declined from 200,000 to 900 in 18 hours.

This means that P(0) = 200000 and that when t = 18, P(t) = 900. So we use this to find r.

P(t) = P(0)(1-r)^t

900 = 200000(1-r)^{18}

(1-r)^{18} = \frac{900}{200000}

\sqrt[18]{(1-r)^{18}} = \sqrt[18]{\frac{900}{200000}}

1 - r = (\frac{900}{200000})^{\frac{1}{18}}

1 - r = 0.7407

So

P(t) = P(0)(1-r)^t

P(t) = 200000(0.7407)^t

At this rate of decay, how many bacteria was there at 10 hours?

This is P(10). So

P(10) = 200000(0.7407)^{10} = 9941.5

Rounding to the nearest whole number:

9,942 bacteria were there at 10 hours.

5 0
3 years ago
The perimeter of a rectangular field is 360yd. The length is 20yd longer than the width. Find the dimensions
Tju [1.3M]
If P=360, then 360yd / 4 sides = 90yds each side. Now that it is a rectangle, the Length should be more than the width, so if the length is 20yds more than the width, do 90 - 20 two times,  Width= [ (90yds - 20yds)*2 ] 

To sum things up, Length = 110; Width = 70. | 110*2 = 220, 70 * 2 = 140, 220+140 = 360.
5 0
3 years ago
Read 2 more answers
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