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NikAS [45]
3 years ago
15

Solve each system of equations algebraically 1. y=x+5 y=6 2. y=x+12 y= -18 3. y=x-10 y= -12

Mathematics
1 answer:
OleMash [197]3 years ago
5 0

Answer:

Step-by-step explanation:

ky=x+5y 62y=x

Step: Solvey=x+5yfor x:

y=x+5y

y+−x=x+5y+−x(Add -x to both sides)

−x+y=5y

−x+y+−y=5y+−y(Add -y to both sides)

−x=4y et's solve for x.

y=x+12y

Step 1: Flip the equation.

x+12y=y

Step 2: Add -12y to both sides.

x+12y+−12y=y+−12y

x=−11y

Answer:

x=−11y

 

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4 0
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Find the missing number in the factor tree<br><br> for 20 points<br><br> i hope you will help
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Answer:

see below

Step-by-step explanation:

80 =     4*    20

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3 years ago
The sum of three consecutive even integers is 102. Find the largest of the three integers.
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7 0
3 years ago
There were 200,000 animals of a certain species in 1980. Since then,this number has decreased by 4.5% each year. Approximately h
g100num [7]

Answer: Approximately 25187 animals of this species will be left in 2025

Step-by-step explanation:

We would apply the formula for exponential decay which is expressed as

y = b(1 - r)^x

Where

y represents the population of animals after x years.

x represents the number of years.

b represents the initial population of animals.

r represents rate of decay.

From the information given,

b = 200000

r = 4.5% = 4.5/100 = 0.045

x = 2025 - 1980 = 45 years

Therefore,

y = 200000(1 - 0.045)^45

y = 200000(0.955)^45

y = 25187

8 0
3 years ago
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3 years ago
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