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4 years ago

HELP ME PLEASE WILL GIVE BRAINLIEST JUST HURRY GOT UNTIL TMRW AND ITS LATE LOL

Mathematics

2 answers:

antiseptic1488 [7]4 years ago

8 0

Sergio will buy first! He is earning more than Lia per week, and it would take him about 34 weeks and he’d haves little money left over by that time :)

ziro4ka [17]4 years ago

7 0

Answer:

Sergio will buy first

It will take 34 weeks for Sergio

and 45 weeks for Lia

Step-by-step explanation:

Given Info: Per week Sergio Saves $24

How:

divide $72 by 4 weeks to find how much Lia is earning per 1 week.

72/4= 18

So Lia is saving 18$ per week while Sergio saves $24 per week

24>18

Sergio will save more per week so he will get it first.

It will take 34 weeks for Sergio

and 45 weeks for Lia

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3 years ago

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3 years ago

Read 2 more answers

(Will l give 25 points!) Solve the system of linear equations by substitution. -8x + y = 5 and 5x - y = 3

Serggg [28]

Answer:

x = -8/3 and y = -49/3

Step-by-step explanation:

(Step 1) To solve using substitution, you first need to isolate a variable in one of these equations. I chose to isolate "y" in the following equation.

-8x + y = 5 <--- Original equation

y = 5 + 8x <--- Add 8x to both sides

(Step 2) Now, substitute (5 + 8x) for "y" in the second equation.

5x - y = 3 <--- Original equation

5x - (5 + 8x) = 3 <--- Substitute 5 + 8x for "y"

5x - 5 - 8x = 3 <--- Distribute (-) in the parentheses

-3x - 5 = 3 <--- Combine terms with "x"

-3x = 8 <--- Add 5 to both sides

x = -8/3 <--- Divide both sides by -3

(Step 3) Since you know the value of "x", plug it into one of the equations to solve for "y".

y = 5 + 8x <--- Original (rearranged) equation

y = 5 + 8(-8/3) <--- Plug (-8/3) for "x"

y = 5 - 64/3 <--- Multiply

y = 15/3 - 64/3 <--- Convert 5 into a fraction

y = -49/3 <--- Subtract

(Step 3.5) You can check your work by plugging "y" into the other equation to see if the answer for "x" is the same.

5x - y = 3 <--- Original equation

5(-8/3) - y = 3 <--- Plug (-8/3) for "x"

-40/3 - y = 3 <--- Multiply

-40/3 - y = 9/3 <--- Convert 3 into a fraction

-49/3 - y = 0 <--- Subtract both sides by 9/3

-49/3 = y <--- Add both sides by "y"

The value of the system of equations is x = -8/3 and y = -49/3.

6 0

3 years ago

Round 5.928301 to 2 decimal places

Artist 52 [7]

Look to the 3rd decimal, 8. it rounds up, so the answer is **5.93**

7 0

3 years ago

John recorded the number of cars passing a traffic signal at intervals of 2 minutes.

Sedaia [141]

The image relating to the question can be found in the picture attached below.

Answer:

y - intercept = 0

Slope of line = 2.86

Step-by-step explanation:

THE y-intercept is the point on the y - axis where the line crosses the y - axis. The y-intercept of the graph is 0.

The slope of the line is the ratio of change in the y-axis to the x - axis.

Gradient / slope = Δy / Δx = (y2 - y1) / (x2 - x1)

Drawing a right angle triangle at any point on to meet the line of best fit :

y2 = 35, y1 = 15, x2 = 12, x1 = 5

Slope = (y2 - y1) / (x2 - x1) = (35 - 15) / (12 - 5)

Slope = 20 / 7 = 2.857

Slope = 2.86

6 0

4 years ago