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3 years ago

If its £18.75 per square metre of clear plastic how much will it cost to cover 2x notice boards 1 metre high and 1 metre wide ?

Mathematics

1 answer:

xenn [34]3 years ago

3 0

Just double 18.75 because the total area needed to cover is 2 square meters

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80km is 9% of what distance

Sliva [168]

Multiply 80km by 9%

80km × 9% = 7.2 ←

80km is 9% of 7.2 ←

I hope this helps!

5 0

4 years ago

A rectangular room is 4 times as long as it is wide, and it’s perimeter is 60 meters. Find the dimension of the room

brilliants [131]

Answer: the length is 24m

The width is 6 m

Step-by-step explanation:

The formula for determining the perimeter of a rectangle is expressed as

Perimeter = 2(L + W)

The perimeter of the given rectangle is 60 meters. This means that

2(L + W) = 60

Dividing through by 2, it becomes

L + W = 60 /2

L + W = 30 - - - - - - - - - - - - - -1

The rectangular room is 4 times as long as it is wide. This means that

L = 4W

Substituting L = 4W into equation 1, it becomes

4W + W = 30

5W = 30

W = 30/5

W = 6

L = 4 × 6

L = 24

7 0

3 years ago

Read 2 more answers

I need help with 3b2-b b=5

salantis [7]

Answer:

$f(x) = 3 {b}^{2} - b \\ f(5) = 3 {(5)}^{2} - 5 \\ f(5) = 3(25) - 5 \\ f(5) =7 5 - 5 \\ \boxed{f(5) = 70}$

f(5) = 70 is the right answer.

5 0

3 years ago

Which complex number has a distance of 17 from the origin on the complex plane?

Virty [35]

Answer:

None of the options are correct.

Step-by-step explanation:

Let the complex number is a + ib

Given distance from origin = 17 units

Now, by distance formula distance of a point from the origin =

$17 = \sqrt{(x)^{2} + (y)^{2} }$

1) Check for 2 + 15 i

here, $\sqrt{15^2 + 2^2} = \sqrt{225 + 4} = \sqrt{229}$ ≠ 17

2) Check for 17 + i

here, $\sqrt{17^2 + 1^2} = \sqrt{289 + 1} = \sqrt{290}$ ≠ 17

3) Check for 20 - 3 i

here, $\sqrt{20^2 + (-3)^2} = \sqrt{400 + 9} = \sqrt{409}$ ≠ 17

4) Check for 4 - i

here, $\sqrt{4^2 + (-1)^2} = \sqrt{16 + 1} = \sqrt{17}$ ≠ 17

Hence, none of the options are correct.

4 0

4 years ago

There are 6 cakes in a box. The box and cakes weigh 250 grams altogether. The box weighs 22 grams. Each cake weights the same. W

levacccp [35]

250-22 gives you 228 228/6 gives you how much each cake is, each cake is 38 grams

5 0

4 years ago