Write 3,905,000 in expanded form.

the sum of three numbers is 78. the third number is 2 times the second. the first number is 6 less than the second. what are the

MariettaO [177]

When we give x to second, then the third will be 2x and according to informations first one should be x-6. Then you have to sum all. It ll be equal to 4x-6.
78=4x-6
84=4x
21=x
So, first number is 15, second one is 21 and the last one is 42

6 0

3 years ago

Raju's father is 26 years younger than raju's grandfather and 29 years older than raju. The sum of the ages of all the three is

Ugo [173]

Answer:

Raju = 17 years

Raju's father age = 46 years

Raju's grandfather age = 72 years

Raju's grandmother = 68 years

His sister = 10 years old

Step-by-step explanation:

Raju’s father is 26 years younger than Raju’s grandfather and 29 years older than Raju. The sum of the ages of all the three is 135 years. Also, Raju's Grandmother is four times of Raju’s age and his sister is 7 years younger than him.

Let

Raju's age = x

Raju's father age = x + 29

Raju's grandfather age = (x + 29) + 26

Total ages = 135

(x) + (x + 29) + (x + 29) + 26 = 135

x + x + 29 + x + 29 + 26 = 135

3x + 84 = 135

3x = 135 - 84

3x = 51

x = 51 /3

x = 17

Raju's age = x = 17 years

Raju's grandmother = 4 times raju's age

= 4 × 17 years

= 68 years

his sister = 7 years younger than him.

= 17 - 7

= 10 years old

Raju's father age = x + 29

= 17 + 29

= 46 years

Raju's grandfather age = (x + 29) + 26

= 46 + 26

= 72 years

3 0

3 years ago

Tv=10x-26 and vx =5x+9 what is the value of x

Lyrx [107]

Since this is an equilateral triangle, TV=VX. You can set TV equal to VX to solve for the value of x. The expression would be 10x-26=5x+9. Subtract 5x from both sides to get 5x-26=9. Add 26 to both sides to get 5x=35. Lastly, divide by 5 to get x=7.

So, your answer would be 7 degrees. Hope this helps!

6 0

3 years ago

Read 2 more answers

Given that f(x) = x2 – 12x + 27 and g(x) = x – 9, find (f g)(x) and express

Galina-37 [17]

The answer is f(g(x))=x^2-30x+216

4 0

3 years ago

Combined, there are 198 Asians, Africans, Europeans, and Americans in a village. The number of Asians exceeds the number of Af

svp [43]

Using a system of equations, the numbers in the village are given as follows:

Asians: 134.

Africans: 30.

Europeans: 20.

Americans: 14.

<h3>What is a system of equations?</h3>

A system of equations is when two or more variables are related, and equations are built to find the values of each variable.

For this problem, the variables are given as follows:

Variable x: Number of Asians.

Variable y: Number of Africans.

Variable z: Number of Europeans.

Variable w: Number of Americans.

Combined, there are 198 Asians, Africans, Europeans, and Americans in a village, hence:

x + y + z + w = 198.

The number of Asians exceeds the number of Africans and Europeans by 84, hence:

x - (y + z) = 84

y + z = x - 84.

The difference between the number of Europeans and Americans is 6, hence:

z - w = 6.

If the number of Africans is doubled, their population exceeds the number of Europeans and Americans by 26, hence:

2y = z + w + 26.

2y - z - w = 26.

Hence the system is given by:

x + y + z + w = 198.

x - (y + z) = 84.

z - w = 6.

2y - z - w = 26.

Using a calculator, the solution is given by:

x = 134, y = 30, z = 20, w = 14.

Hence the numbers in the village are given as follows:

Asians: 134.

Africans: 30.

Europeans: 20.

Americans: 14.

More can be learned about a system of equations at brainly.com/question/24342899

#SPJ1

7 0

2 years ago