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4 years ago

10

Kia has 10 coins in a bag there are 3 £1 coins and seven 50p coins can you takes at random, 3 coins from the bag. Work out the p

robability that she takes exactly £2.50

2 answers:

Natalka [10]4 years ago

8 0

Answer:

7/40

Step-by-step explanation:

I hope it helps know

Can you do me a Brainliest PLEASE

Artyom0805 [142]4 years ago

6 0

Answer:

Step-by-step explanation: 3x7=21 solutions

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A right triangle has side lengths of 3cm, 4cm, and 5cm. What is the sine of the angle opposite the side of length 4cm

baherus [9]

Answer:

4/5

Step-by-step explanation:

In a right triangle, the longest side is always the hypotenuse. Hence

Hypotenuse =5cm

The side opposite to the angle theta is the opposite, hence

Opposite = 4cm

Required

Sin theta

According to SOH CAH TOA

Sin theta = opposite/hypotenuse

Sin theta = 4/5

Hence the sine of the angle opposite the side of length 4cm is 4/5

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3 years ago

Suppose a city with population 900,000 has been growing at a rate of 7% per year. If this rate continues, find the population of

Y_Kistochka [10]

Answer:

Future population in 19 years = 3,254,580 people (Approx.)

Step-by-step explanation:

Given:

Current population of city = 900,000

Growth rate of population = 7%

Number of year = 19

Find:

Future population in 19 years

Computation:

A = P[1+r]ⁿ

Future population = Current population[1+g]ⁿ

Future population in 19 years = 900,000[1+7%]¹⁹

Future population in 19 years = 900,000[1+0.07]¹⁹

Future population in 19 years = 900,000[1.07]¹⁹

Future population in 19 years = 900,000[3.6162]

Future population in 19 years = 3,254,580

Future population in 19 years = 3,254,580 people (Approx.)

6 0

3 years ago

A party mix is made by adding nuts that sell for $2.50 per kg to a cereal mixture that sells for $1 per kg. How much of each sho

Nana76 [90]

Answer:

n=16 kg

c=44 kg

Step-by-step explanation:

Let

n=nuts at $2.50 per kg

c=cereal at $1 per kg

n+c=60 (1)

2.5n + c=1.40(60) (2)

From (1)

n=60-c

Substitute n=60-c into (2)

2.5n + c=1.40(60)

2.5(60-c) +c=84

150-2.5c+c=84

-1.5c=84-150

-1.5c= -66

Divide both sides by -1.5

c=44 kg

Substitute c=44 into (1)

n+c=60

n+44=60

n=60-44

=16

n=16 kg

The amount of nuts is 16 kg and cereal mixture is 44 kg to obtain 60 kg of a mix that will sell for $1.40 per kg.

8 0

3 years ago

Fun center rents popcorn machines for &20 per hour. In addition to the hourly charge, there is a rental fee of $35. Is this

Gelneren [198K]

Answer:

No. It is not proportional.

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3 years ago

Solve for the values of x and y. Round the answers to the nearest hundredth.

Alinara [238K]

Answer:

x = 26, y = 19

Step-by-step explanation:

Since the triangles are similar then the ratios of corresponding sides are equal, that is

$\frac{ST}{NP}$ = $\frac{RS}{MN}$ , substitute values

$\frac{x}{13}$ = $\frac{32}{16}$ = 2 ( multiply both sides by 13 )

x = 26

and

$\frac{MP}{RT}$ = $\frac{MN}{RS}$ , substitute values

$\frac{y}{38}$ = $\frac{16}{32}$ = $\frac{1}{2}$ ( cross- multiply )

2y = 38 ( divide both sides by 2 )

y = 19

5 0

3 years ago