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butalik [34]
3 years ago
9

Use the substitution method to solve the system of equations. Choose the correct ordered pair.

Mathematics
2 answers:
Ratling [72]3 years ago
8 0
The correct answer A
zubka84 [21]3 years ago
6 0

Answer:

A) (3,14)

Step-by-step explanation:

6x - 4 =7x - 7

subtract 6x from both sides

-4 = x -7

add 7 to both sides

3= x

now that we know the value of x, plug it into either equation to get y=14

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The population of a town was 20,000 in the year 2010. It decreased at a rate of 9%.
Keith_Richards [23]

Answer:

5340

Step-by-step explanation:

Now you might think that you're supposed to decrease by 45%, but that'd only apply if the population was decreasing once by 9% in the span of 15 years.

Assuming that the YEARLY mortality rate was 9%, we now know that we have to decrease 20,000 by 9%, and then decrease whatever 91% of 20,000 is by 9% again, and so on and so forth. Until the fifteenth time, where you get 5340.8389. Now, here's the thing. You cant have 0.8389 of a person, and when it comes to population, you have to round down even if you had 0.9999 of a person. You always have to round down. And so, when rounding 5340.8389 down, you get 5340. I rest my case.

6 0
3 years ago
It's 8 to 3 i promise i got it right on the assessment
Marta_Voda [28]

Answer:

whats the question but if your asking whats 8-3 its 5

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
1. The perimeter of a piece of paper is 18 cm.
OlgaM077 [116]

Answer:

a) length = 3 and width = 6

Area of the rectangle = 3 × 6 = 18 cm²

b)  length = 7 and width = 2

Area of the rectangle = 7 × 2 = 14 cm²

c)  length = 5 and width = 4

Area of the rectangle = 5× 4 = 20 cm²

Step-by-step explanation:

<u><em>Step(i):-</em></u>

Given perimeter of the paper = 18 cm

we know that the paper has a rectangle shape

The perimeter of the rectangle = 18 cm

 2( l + w ) = 18

a)

we choose length = 3 and width = 6

The perimeter of the rectangle = 2( 3+6) = 18 cm

Area of the rectangle = 3 × 6 = 18 cm²

b)

we choose length = 7 and width = 2

The perimeter of the rectangle = 2( 7+2) = 18 cm

Area of the rectangle = 7 × 2 = 14 cm²

c)

we choose length = 5 and width = 4

The perimeter of the rectangle = 2( 5+4) = 18 cm

Area of the rectangle = 5× 4 = 20 cm²

3 0
3 years ago
Teddy uses 2.5 gallons of ice to fill 4 buckets. He needs to 30 buckets.how many gallons of ice will teddy need
Ghella [55]

Answer:

18.75 gallons of ice

Step-by-step explanation:

I divided the 2.5 gallons of ice by the number of buckets (4) it filled to determine how many gallons of ice are in each bucket.

2.5 / 4 = 0.625

I then multiplied the amount of ice it takes to fill a bucket (0.625) by 30 buckets to get 18.75 gallons of ice.

8 0
4 years ago
Read 2 more answers
The graph of f has the equation of f(x)=x^3-4x²-3x+18
Butoxors [25]
Hello,


y= x^3-4x²-3x+18=(x-3)²*(x+2)

y'=3x²-8x-3

y''=6x-8

1) Stationary points

Maximun: x=-1/3 ==>y=18,5185....
Minimum: x=3  ===>y=0 (double root)

2) x=4/3: point of inflection. (y''=0 and change sign)




5 0
3 years ago
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