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4 years ago

Berjabat tangan =66

Mathematics

1 answer:

barxatty [35]4 years ago

4 0

I’m sorry what? Explain ?

You might be interested in

Which expression shows the result of applying the distributive property to -2(1/3x - 1/5) ?

Alexeev081 [22]

Answer:

A. -2/3x - 2/5

Step-by-step explanation:

-2 x 1/3x = -2/3x

-2 x 1/5 = 2/5

-2/3x - 2/5

7 0

4 years ago

Daniel, my son, is exactly one fifth of my age. in 21 years time, i will be exactly twice his age. my wife is exactly seven time

nydimaria [60]

Let daniel's age = d and let jessica's age = j
let your current age = x and your wife's current age = y

x = 5d (given in question)
∴ x - 5d = 0

x + 21 = 2(d+21) (given in question)
∴ x + 21 = 2d + 42
∴ x - 2d = 21

We can solve these two rearranged equations simultaneously by multiplying the first equation by -1 and adding them. This gives us the following:

3d = 21
∴ d = 7

This means that daniel is currently 7 and (if we substitute d = 7 into one of the equations) you are 35. We use a similar method for your wife's and jessica's current ages.

y = 7j (given in question)
∴ y - 7j = 0

y + 8 = 3(j + 8)
∴y + 8 = 3j + 24
∴ y - 3j = 16

If we use a similar method of elimination we get this:

4j = 16
∴ j = 4

Hence, from this we can concur that daniel is 7 and jessica is 4.

3 0

3 years ago

From a group of 10 people, 5 are selected at random to participate in a game show. In how many ways can the 5 people be selected

diamong [38]

Answer:

A) 120

Step-by-step explanation:

For this question you will need to use factorials

5! =5×4×3×2×1

which equals to 120

therefore the 5 people can be selected in 120 different ways

hope this helps

6 0

3 years ago

Read 2 more answers

Calculate the perimeter of the composite figure. Round your answer to the nearest hundredth. Use 3.14 for $\pi$ .

Elena-2011 [213]

1. Perimeter is 3 + 3 +3 +4 +5 = 18 feet

Area = 3*3 = 9, 1/2*3*4 = 6, 9 + 6 =15 square feet

2. perimeter = 2.5 +2.5+ 2.5+2.5+0.5+0.5 = 11 meters

Area = 3*.5 = 1.5, 3*2=6, 6+1.5 = 7.5 square meters

3. perimeter = 3.14*2*3 = 18.84 +8 = 26.8 inches

Area = 6*4 = 24 + 3.14*3^2 = 28.26 = 28.26 +24 = 52.3 inches

4. surface area = 2*π*6*20+2*π*6^2= 980.2 yards

Volume = π*6^2*20 = 2261.9 cubic yards

5.surface area = 2*(9*7+2*2+2*9) = 190 cm

Volume = 2*7*9 = 126 cubic cm

6. surface area = 2*(11*11+11*11+11*11) = 726 mm

Volume = 11 *11*11 = 1331 cubic cm

3 0

3 years ago

Find the slope (2,4),(-2,-1)

tangare [24]

Answer:

4/5

Step-by-step explanation:

x2-x1/y2-y1

-2-2=-4

-1-4=-5

-4/-5

Simplify

4/5

The slope is 4/5

8 0

4 years ago

Berjabat tangan =66​

Berjabat tangan =66