1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
s2008m [1.1K]
3 years ago
8

white paint costs £2.10 per litre. blue paint costs £1.50 per litre. white paint and blue paint are mixed in the ratio 2:1. work

out the cost of 17 litres of the mixture
Mathematics
1 answer:
emmainna [20.7K]3 years ago
8 0

White paint = 2/3 * 17 = 11.33 liters , 11.33*2.10 = $23.8

blue paint = 1/3 * 17 = 5.66 liters, 5.66*1.50 = $8.5

Total cost = 23.8+8.5 = 32.30 euros

You might be interested in
HELP I NEED HELP ASAP
SVEN [57.7K]
It’s D
This is the right answer
8 0
3 years ago
Read 2 more answers
If electricity power failures occur according to a Poisson distribution with an average of 3 failures every twenty weeks, calcul
Wittaler [7]

Answer:

0.9898 = 98.98% probability that there will not be more than one failure during a particular week.

Step-by-step explanation:

In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:

P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}

In which

x is the number of sucesses

e = 2.71828 is the Euler number

\mu is the mean in the given interval.

3 failures every twenty weeks

This means that for 1 week, \mu = \frac{3}{20} = 0.15

Calculate the probability that there will not be more than one failure during a particular week.

Probability of at most one failure, so:

P(X \leq 1) = P(X = 0) + P(X = 1)

Then

P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}

P(X = 0) = \frac{e^{-0.15}*0.15^{0}}{(0)!} = 0.8607

P(X = 1) = \frac{e^{-0.15}*0.15^{1}}{(1)!} = 0.1291

Then

P(X \leq 1) = P(X = 0) + P(X = 1) = 0.8607 + 0.1291 = 0.9898

0.9898 = 98.98% probability that there will not be more than one failure during a particular week.

6 0
2 years ago
What is the value of x in the following equation, x/4 = -120? (Btw, it's x over 4 not division :)
Sergio039 [100]
If you mean by x over 4 that it is fraction then there is no different between it and divisions
x/4 = -120
x = -120 × 4 ( when division goes to the other side of equal it turns into multiplication)
x = -480

A. -480
5 0
3 years ago
Read 2 more answers
In a 30-60-90 triangle, what is the length of the hypotenuse when the shorter leg is 5 cm?
zheka24 [161]

Shorter Leg=x

Hypotenuse=2x

Shorter Leg=5cm

Hypotenuse= 10cm

3 0
3 years ago
I need help on how to do combinations
Veronika [31]
Ok sure! Let's start with the marbles first. We have one red one blue and one green. There is a red and a blue cube. All we do is list the possible combinations of one marble and one cube. The answer would be : 1 blue marble, 1 blue cube. 1 red marble, 1 blue cube. 1 green marble, 1 blue cube. Then again but with the red cube. So in all, there are 6 possible combinations. Hope this helps. ☺️
3 0
3 years ago
Other questions:
  • the flagpole in front of silver pine elementary school is 18.374 feet tall what is 18375 roundef to the nearest tenth
    9·2 answers
  • I need help with this problem <br><br><br><br> PLEASE HELP!
    12·1 answer
  • What is the common difference in the following arithmetic sequence?
    11·1 answer
  • THIS I S EASY I JUST DON'T KNOW IT PLZZ ANYONE I REALLY NEED THIS ASP I PROMISE BRAIBLIEST ANYONE???????PLZZ HELP I DON'T KNOW W
    7·2 answers
  • A 28% increase of 150 is
    15·1 answer
  • The vertices of a triangle are A(4,5), B(7,1), and (9,6). After reflecting over the line x = 5, what are the new coordinates?
    13·2 answers
  • Write the phrase as an algebraic expression: 2 more than the product of 7 and a number y
    12·1 answer
  • For his craft project, James bought 2.1 feet of ribbon? How many yards of ribbon did he buy?
    8·2 answers
  • A rectangular building with a square front is to be constructed of materials that costs 11 dollars per ft2 for the flat roof, 14
    7·1 answer
  • Please help me please help​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!