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eduard
2 years ago
6

Solve this system of equations using the Substitution method. 3x + y = -2 y = 2x + 3

Mathematics
1 answer:
alukav5142 [94]2 years ago
6 0

Answer:

Step-by-step explanation:

we see that y = -3x-3

substitute that into the other equation to get

-3x-3 = 2x+7

-5x = 10

x = -2

so, y = -3(-2)-3 = 3

check to make sure (-2,3) solves both equations.

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The original price of a jar of paint is$1.20 the store manager gets a 10 percent discount on orders of at least 50 jars of paint
sleet_krkn [62]

Answer:

$54

Step-by-step explanation:

50 * $1.20 = $60

Before the discount, 50 jars cost $60.

Since the discount rate is 10%, he will pay only 90% of the price since 100% - 10% = 90%.

90% of $60 =

= 90% * $60

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4 0
3 years ago
What are the corresponding sides in the two images below? ​
Sonja [21]

LM=ZW

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3 0
2 years ago
The total number of burgers sold from a restaurant from Monday to Sunday can be modeled by the function f(d)=200d^3 + 542d^2 + 1
DerKrebs [107]

Answer:

Average = 96

Step-by-step explanation:

Average = sum of terms/ number of terms

sum of terms = number of burgers sold

number of terms = number of visitors

d =  number of days since Monday which is 7

burgers sold = 200d^3 + 542d^2 + 179d + 1605 substituting d with 7

burgers sold = 200(7)³ +542(7)² + 179(7) +1605

burgers sold =68600 + 26558 + 1253 + 1605

burgers sold =98016

number of visitors= 100d + 321

number of visitors= 100(7) + 321

number of visitors= 700+321

number of visitors= 1021

Average = 98016/1021

Average = 96

3 0
3 years ago
A small television costs $150. if the sales tax is 6%, what is the total cost
Vedmedyk [2.9K]

Answer:

240

Step-by-step explanation:

I think hope it helps

6 0
2 years ago
F(x) = 2x2 – x + 9<br> Find f (4)
Alex

Answer:

45

Step-by-step explanation:

F(-4). F(x) = 2x^2 - x + 9

3 0
3 years ago
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