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3 years ago

A car drives 270 miles and can drive 13.5 miles per litre of diesel. Diesel

Mathematics

2 answers:

Svet_ta [14]3 years ago

5 0

Answer:

£28.80

Step-by-step explanation:

The car needs to burn 1l * 270mi / 13.5mi = 1l * 20 = 20l of diesel.

The total cost will be 20l * £1.44/l = £28.80

stiks02 [169]3 years ago

5 0

Answer:

£28.80

Step-by-step explanation:

i just answered this question lol

270÷13.5=20

20x1.44=£28.80

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A store is having a sale. Sally wants to buy an $80 item at the store. Which of the following equations gives the discount price

satela [25.4K]

The answer is either a or c, depending on the tax percentage. tax is added to the price tag price

6 0

3 years ago

When testing for current in a cable with eight color-coded wires, the author used a meter to test five wires at a time. How man

balu736 [363]

Answer:

56 different tests

Step-by-step explanation:

Given:

Number of wires available (n) = 8

Number of wires taken at a time for testing (r) = 5

In order to find the number of different tests required for every possible pairing of five wires, we need to find the combination rather than their permutation as order of wires doesn't disturb the testing.

So, finding the combination of 5 pairs of wires from a total of 8 wires is given as:

$^nC_r=\frac{n!}{r!(n-r)!}$

Plug in the given values and solve. This gives,

$^8C_5=\frac{8!}{5!(8-5)!}\\\\^8C_5=\frac{8\times 7\times 6\times 5!}{5!\times 3\times2\times1}\\\\^8C_5=56$

Therefore, 56 different tests are required for every possible pairing of five wires.

6 0

3 years ago

I WILL GIVE BRAINLIEST

ryzh [129]

Answer:

See below. No image this time.

Step-by-step explanation:

P(2, 8) → P'(-5, 1), which it went 7 units to the left, and 7 units down. Here is the equation: (x - 7, y - 7).

R(-4, -9) → R'(-4, -2), which went 7 units up. Here is the equation: (x, y + 7).

M(10, -3) → M'(3, 4), which went 7 units left, 7 units up. Here's the equation: (x - 7, y + 7).

K(7, 11) → K'(0, 11), which went 7 units left. Here is the equation: (x - 7, y).

4 0

2 years ago

What is the value of x when y equals 66?<br><br> y=0.985897x+0.194185

Tcecarenko [31]

Answer:

x = 66.74715005725

Step-by-step explanation:

First you bring over the added variable. 0.194185, and subtract it from 66. Then you divide your difference by 0.985897. This gives you 66.74715005725

6 0

3 years ago

A holiday costs £1200. Work out the price after a 7% discount.

vfiekz [6]

Answer:

1116

Step-by-step explanation:

0.93(1200)

1116

8 0

3 years ago