All categories

3 years ago

What is decrease £20 by 15%

Mathematics

2 answers:

hichkok12 [17]3 years ago

5 0

You multiply 20 by the multiplier
20x0.85=17

Charra [1.4K]3 years ago

3 0

$15\%\cdot\pounds20=0.15\cdot\pounds20=\pounds3\\
\pounds20-\pounds3=\pounds17$

You might be interested in

a party of 7 comes into your restaurant and says they want to split the bill evenly 7 ways their total is $247.79 what does each

Finger [1]

Answer:

each costumer owe $35.40

Step-by-step explanation:

so, u get 247.79÷7 (cuz it is 7 people)

u get 35.40.

to check just get 35.40×7 and u will revice their total.

6 0

3 years ago

A package of colored paper contains 20 pieces of yellow paper. This represents 25% of the total pieces of colored paper in the p

rewona [7]

<u />the answer may be 125 because 20 pieces of colored paper is only part and then the whole would be 125 because divided by is 5 so 25 times 5 is 125.

6 0

3 years ago

Please help me quickly !!

Fittoniya [83]

Answer:

1. multiply by 4/3

2. add 1.72

Step-by-step explanation:

1 you are cancelling out part of the first side making it x-1.72

2. adding 1.72 makes gets x by itself

4 0

3 years ago

A hockey player strikes a hockey puck. The height of the puck increases until it reaches a maximum height of 3 feet, 55 feet awa

MariettaO [177]

Answer:

The maximum height of the second pluck is greater than that of the first pluck, hence the second pluck travels further

Also the distance of the maximum height of first pluck from the player is less than the distance of the second pluck from the player hence the second pluck travels further

Step-by-step explanation:

From the question we are told that

The maximum height of the first pluck is $h_1 = 3 \ ft$

The height of the second height is mathematically represented as

$$y=x\left(0.15-0.001x\right)$

=> $y=0.15x -0.001x^2$

Generally at maximum height $y' = 0$

$y'=0.15 -0.002 x = 0$

=> $x = 75 \ ft$

Here 75 ft is the horizontal distance the second pluck traveled at maximum height

So the maximum height of the second pluck is mathematically represented as

$y=0.15(75) -0.001(75)^2$

=> $y= 5.625 \ ft$

So comparing the maximum height of the first and the second pluck we see that the maximum height of the second pluck is greater than that of the first pluck, hence the second pluck travels father

3 0

3 years ago

What is the value of x?

rodikova [14]

1) expand the brackets
6(-3 - x) - 2x = 14
-18 - 6x - 2x = 14
simplify
-18 - 8x = 14
then add 18 to both sides to get the x's on there own
-8x = 32
then divide by -8
x = 32/-8
x = -4

2) multiply everything by 7x
2 + (6 x 7x) + ( 17x × 7x) = 18 x 7x
2 + 42x + 119x^2 = 126x
put everything on one side
119x^2 - 84x + 2 = 0
then use quadratic equation to solve

x = 0.024671849 or 0.6812105039

6 0

3 years ago