All categories

3 years ago

Solomon is 9 years younger than his brother.His brother is 21.How old is Solomon.write and solve an equation

Mathematics

2 answers:

Advocard [28]3 years ago

8 0

Answer: The required age of Solomon is 18 years.

Step-by-step explanation: Given that Solomon is 9 years younger than his brother and his brother is 21.

We are to find the age of Solomon.

Let x years be the age of Solomon.

Then, according to the given information, we have

$x=21-9\\\\\Rightarrow x=18.$

Thus, the required age of Solomon is 18 years.

sdas [7]3 years ago

6 0

21-9=12 this is tge equation with the answer

You might be interested in

What is the solution to 0.4(12 – 3x) = 0.3(12x – 16)?

TiliK225 [7]

Answer:

x = 2

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Multiplication Property of Equality
Division Property of Equality
Addition Property of Equality
Subtract Property of Equality

Step-by-step explanation:

Step 1: Define

0.4(12 - 3x) = 0.3(12x - 16)

Step 2: Solve for x

Distribute: 4.8 - 1.2x = 3.6x - 4.8
Add 1.2x on both sides: 4.8 = 4.8x - 4.8
Add 4.8 on both sides: 9.6 = 4.8x
Divide 4.8 on both sides: 2 = x
Rewrite: x = 2

8 0

3 years ago

Find the area of the kite please help and just don’t write down random answers

Zanzabum

Answer:

187.06 units²

Step-by-step explanation:

Area of kite:

½ × d1 × d2

½d1 = 18sin(30)

½d1 = 9

d1 = 18

d2 = 9/tan(60) + 18cos(30)

= 12sqrt(3)

Area = ½ × 18 × 12sqrt(3)

108sqrt(3) units²

187.0614872 units²

6 0

3 years ago

Heyy can you help me out on this question please

defon

We can use quadratic formula to determine the roots of the given quadratic equation.

The quadratic formula is:

$x= \frac{-b+- \sqrt{ b^{2}-4ac } }{2a}$

b = coefficient of x term = 5
a = coefficient of squared term = 1
c = constant term = 7

Using the values, we get:

$x= \frac{-5+- \sqrt{25-4(1)(7)} }{2(1)} \\ \\ 
x= \frac{-5+- \sqrt{-3} }{2}$

So, the correct answer to this question are option E and F

8 0

3 years ago

How large in square meters is the land area of australia (2941526 mi 2)?

cluponka [151]

2941526 mi^2
The first thing you should know to solve this problem is the following conversion:
1mi = 1609.34m
Applying the conversion we have:
2941526 * (1609.34 / 1) ^ 2 = 7.61848E + 12 m ^ 2
Answer:
The land area of Australia in square meters is:
7.61848E + 12 m ^ 2

8 0

3 years ago

Please show the work as well 5TH GRADE MATH

Liono4ka [1.6K]

Answer:

$9450 {m}^{3}$