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Hunter-Best [27]
3 years ago
5

Solve the system of equations. - 5x + 2y = 9

Mathematics
1 answer:
Marina CMI [18]3 years ago
3 0

Answer: -5x + 2y -9 = 0

Step-by-step explanation:

1. Move constant to the left and change its sign

2. Change the signs on both sides of the equation

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The number of students in an school building that have the flu after t days is given by the function
gulaghasi [49]

Step-by-step explanation:

p(0) =  \frac{800}{1 + 49 {e}^{ - 0.2 \times 0} }  =  \frac{800}{1 + 49}  =  \frac{800}{50}  = 16

200 =  \frac{800}{1 + 49 {e}^{ - 0.2t} }  \\ 200(1 + 49 {e}^{ - 0.2t} ) = 800 \\ 200 + 9800 {e}^{ - 0.2t}  = 800 \\ 9800 {e}^{ - 0.2t}  = 600 \\  {e}^{ - 0.2t}  =  \frac{3}{49}  \\  ln( {e}^{ - 0.2t} )  =  ln( \frac{3}{49} )  \\ -  0.2t =  - 2.793 \\ t = 13.96 = 14

6 0
3 years ago
Does the mixed number 4 3/4 make each equation true? Choose Yes or No for each equation.
zhuklara [117]

Answer:

first one: yes

second one: yes

third one: no

fourth one: yes

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Mark wants to buy a PS5 for $499.00. If tax in her local county is 7.75% of the total sale, what is the final cost?
Effectus [21]

Assuming Mark wants to buy a PS5 for $499.00 and the  tax in her local county is 7.75% of the total sale, what will be the final cost is $538

Using this formula

Final cost =Total sales+ (Total sales×Tax)

Let plug in the formula

Final cost= $499.00+($499.00×7.75%)

Final cost= $499.00+$38.67

Final cost= $537.67

Final cost= $538 (Approximately)

Inconclusion Assuming Mark wants to buy a PS5 for $499.00 and the  tax in her local county is 7.75% of the total sale, what will be the final cost is $538

Learn more here:

brainly.com/question/13040834

7 0
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Answer: A.) y=-2/3x-3

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3 years ago
Which store offers the lowest unit rate for lettuce in dollars per pound?
vlabodo [156]
Answer: Farm Fresh

Explanation: Farm Fresh offers the lowest unit rate for lettuce, in dollars per pound. It after the lettuce at a lower price compared to the rest
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3 years ago
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