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AnnZ [28]
3 years ago
14

The sum of two numbers is twenty-five.One number is five less than the other number. Find the larger number

Mathematics
1 answer:
djverab [1.8K]3 years ago
3 0
The larger number is 30.

Set up your equation.

x + y = 25

The question tells us one number is 5 less than the other.

The equation now becomes
x -5 = 25

Add 5 to each side to isolate x.

x=30
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Just two math questions. Thank you :)
aleksley [76]
First one is B i believe and the second one is y=5 i think
7 0
4 years ago
Two families went to Rollercoaster World.
Alona [7]

Answer:

Children ticket cost $30 and adult ticket costs $40.

Step-by-step explanation:

Given that:

x = price of a child ticket

y = price of an adult ticket

According to given statement;

3x+2y=170     Eqn 1

4x+6y=360    Eqn 2

Multiplying Eqn 1 by 3

3(3x+2y=170)

9x+6y=510      Eqn 3

Subtracting Eqn 2 from Eqn 3

(9x+6y)-(4x+6y)=510-360

9x+6y-4x-6y=150

5x=150

Dividing both sides by 5

\frac{5x}{5}=\frac{150}{5}\\x=30

Putting x=30 in Eqn 1

3(30)+2y=170

90+2y=170

2y = 170-90

2y = 80

Dividing both sides by 2

\frac{2y}{2}=\frac{80}{2}\\y=40

Hence,

Children ticket cost $30 and adult ticket costs $40.

6 0
3 years ago
What is the answer when you compute |7-2i|
svetoff [14.1K]

Answer:

= sqrt(53)

Step-by-step explanation:

|7-2i| means find the distance

d = sqrt(real part^2 + imaginary part^2)

  = sqrt(7^2 + (-2)^2)

  = sqrt(49+4)

  = sqrt(53)

6 0
3 years ago
What is the value of log 27^9?
KengaRu [80]

Answer:   The answer is \dfrac{2}{3}.


Step-by-step explanation: We are given to find the value of \log_{27}9.

Here, we will be using the following properties of logarithm.

(i)~\log a^b=b\log a,\\\\(ii)~\log_ba=\dfrac{\log a}{\log b}.

So, we will be solving the given problem using these two as follows.

\log_{27}9=\dfrac{\log9}{\log27}=\dfrac{\log 3^2}{\log 3^3}=\dfrac{2\log 3}{3\log 3}=\dfrac{2}{3}.

Thus, the required value is \dfrac{2}{3}.

4 0
3 years ago
Read 2 more answers
F(x) = - 2x<br> g(x) = 8x^2– 5x+7<br> Find (f .g)(x).
N76 [4]

Answer:

\large\boxed{(f\cdot g)(x)=-16x^3+10x^2-14x}

Step-by-step explanation:

f(x)=-2x\\\\g(x)=8x^2-5x+7\\\\(f\cdot g)(x)=f(x)\cdot g(x)\\\\\text{substitute:}\\\\(f\cdot g)(x)=(-2x)(8x^2-5x+7)\qquad\text{use the distributive property}\\\\(f\cdot g)(x)=(-2x)(8x^2)+(-2x)(-5x)+(-2x)(7)\\\\(f\cdot g)(x)=-16x^3+10x^2-14x

7 0
3 years ago
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