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3 years ago

HELPpPpppppppppppppppppppppppppp and explain

Mathematics

1 answer:

Bess [88]3 years ago

8 0

Answer:

378

Step-by-step explanation:

12 x 18=216

9 x 9= 81

81 x 2= 162

162 + 216 = 378

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L 5.2.3 Quiz: Two-Variable Systems: Substitution

Misha Larkins [42]

Answer:

We get x=3 and y=21

The ordered pair will be: (3,21)

Step-by-step explanation:

We need to use the substitution method to solve the system of equations.

$y = 10x-9\\y = x + 18$

For substitution method we substitute the value of x or y from one equation to other.

Let:

$y = 10x-9--eq(1)\\y = x + 18--eq(2)$

Putting value of y from equation 2 into equation 1

$y=10x-9\\Put\:y=x+18\\x+18=10x-9\\x-10x=-9-18\\-9x=-27\\x=\frac{-27}{-9}\\x=3$

So, we get value of x=3

Now, for finding value of y, We substitute the value of x

Find value of x from equation 2

$y=x+18\\x=y-18$

Now, putting value of x in equation 1

$y=10x-9\\Put\:x=y-18\\y=10(y-18)-9\\y=10y-180-9\\y-10y=-189\\-9y=-189\\y=\frac{-189}{-9}\\y=21$

So, we get value of y=21

So, We get x=3 and y=21

The ordered pair will be: (3,21)

6 0

3 years ago

Pls help with this function<br> Emergency

Alborosie

Answer:

rational function is the correct answer

5 0

2 years ago

Read the complete problem before answering.

lisabon 2012 [21]

1 1/8 = 1.125

2 2/8 = 2.25

1.125 +2.25 = 3.375 yards total

n = 3.375 x 4.30

n = 14.5125 rounds to $14.51 total

7 0

3 years ago

The table shows the amount of a radioactive sample that remains after a certain number of days. use the data in the table to des

My name is Ann [436]

Answer:

1. 10 mg

2. an exponential

3. decreases only

Step-by-step explanation:

its correct

3 0

3 years ago

Diane is 23 years older than her daughter Amy and 6 years Diane will be twice as old as Amy how old are they now

Dmitry_Shevchenko [17]

The age difference between Diane and Amy remains the same. 6 year later, the age difference is still 23 years old.

6 years later,
Amy is 23 years old
Diane is 46 years old

Now,
Amy, 17 years old
Diane, 40 years old.

6 0

3 years ago