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tangare [24]
3 years ago
6

Jill and Gary share £63 in the ratio 2:5 Work out how much each person gets.

Mathematics
1 answer:
irina [24]3 years ago
4 0

Answer:

Jill gets €18 Gary gets €45.

Step-by-step explanation:

First you add the two numbers of the ratio together. 2+5=7. Then you divide the constant, 63, by the total of the ratio, 7. 63/7=9. Then you multiply each number of the ratio by the quotient. 2 x 9= 18. 5 x 9= 45.

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How long will it take a seal swimming at a speed of 8 miles per hour to travel 52 miles
Olin [163]
8\ miles\ per\ 1\ hour\\
52\ miles\ per\ x\ hour\\\\
proportion:\\
8-1\\52-x\\\\cross\ multiplication\\\\
8x=52\ \ \ | divide\ by\ 8\\\\
x=6.5\\\\
It\ will\ take\ 6.5\ hours.
7 0
3 years ago
Find the range of each function for the domain {-4, -2, 0, 1.5, 4}. f(x) = 5x^2 + 4
andrew11 [14]
Substitute x with the members of the domain.
f(x) = 5x² + 4

Substitute with the domain of -4
f(x) = 5x² + 4
f(-4) = 5(-4)² + 4
f(-4) = 5(16) + 4
f(-4) = 80 + 4
f(-4) = 84

Substitute with the domain of -2
f(x) = 5x² + 4
f(-2) = 5(-2)² + 4
f(-2) = 5(4) + 4
f(-2) = 20 + 4
f(-2) = 24

Substitute with the domain of 0
f(x) = 5x² + 4
f(0) = 5(0)² + 4
f(0) = 5(0) + 4
f(0) = 0 + 4
f(0) = 4

Substitute with the domain of 1.5
f(x) = 5x² + 4
f(1.5) = 5(1.5)² + 4
f(1.5) = 5(2.25) + 4
f(1.5) = 11.25 + 4
f(1.5) = 15.25

Substitute with the domain of 4
f(x) = 5x² + 4
f(4) = 5(4)² + 4
f(4) = 5(16) + 4
f(4) = 80 + 4
f(4) = 84

The range of the function for those domain is {4, 24, 15.25, 84}
4 0
3 years ago
I will mark the best or first answer brainliest.
8_murik_8 [283]

Answer:

6

Step-by-step explanation:

9

7 0
3 years ago
What is the range of values for the measurement 500 + or = 4%?
denis23 [38]
The range of values is =5m^4/p that is your answer
4 0
3 years ago
Acellus Find the expected value of a random variable x having the following probability distribution. 0 1 2 3 4 5 Probability 1/
barxatty [35]

Answer:

"2.25" is the right answer.

Step-by-step explanation:

According to the question,

The expected value will be:

= \sum_{i=1}^{n} x_i P(X = x_i)

= 0\times \frac{1}{8}+1\times \frac{1}{4}+2\times \frac{3}{16}+3\times \frac{1}{4}+4\times \frac{1}{6}+5\times \frac{1}{8}

= 0+\frac{1}{4}+\frac{3}{8} +\frac{3}{4}+\frac{1}{4} +\frac{5}{8}

= \frac{1}{4} +\frac{8}{8} +\frac{4}{4}

= \frac{1}{4} +1+1

= 0.25+2

= 2.25

Thus the above is the right approach.

8 0
3 years ago
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