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emmainna [20.7K]
3 years ago
12

How to solve 2x2+50=100

Mathematics
2 answers:
mars1129 [50]3 years ago
8 0

Answer:

x = ± 5

Step-by-step explanation:

Given

2x² + 50 = 100 ( subtract 50 from both sides )

2x² = 50 ( divide both sides by 2 )

x² = 25 ( take the square root of both sides )

x = ± \sqrt{25} = ± 5

Ugo [173]3 years ago
4 0

Answer:

It would be 54.

Step-by-step explanation:

It would be 2 times 2, which is four, and then you would add by 50.

2 x 2 = 4

4 + 50 = 54

So, it will not be 100, it will be 54.

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The cost of performance tickets and beverages for a family of four can be modeled using the equation 4x + 12 = 48, where x
Hunter-Best [27]

For this case we give as data the following equation:

4x + 12 = 48

Where "x" represents the cost of a ticket.

By clearing the value of "x" of the equation we can know the cost of a ticket.

If we subtract 12 from both sides of the equation, we have:

4x = 48-12\\4x = 36

If we divide between 4 on both sides of the equation:

x = \frac {36} {4}\\x = 9

Therefore, the cost of a ticket is $ 9.00

Answer:

Option C

5 0
3 years ago
Jason had three more than four times the amount of money that Jeff has. Together they have $72. How much money does each person
adelina 88 [10]

Answer:

Jason has $58.20 and Jeff has $13.80.

Step-by-step explanation:

Let x represent the amount of money Jason has, and y represent the amount of money Jeff has.

We know that together they have $72. So, we can write the following equation:

x+y=72

We know that Jason has three <em>more</em> than four <em>times</em> the amount of money Jeff has. So:

x=3+4y

This is a system of equations. We can solve it by using substitution. Let's substitute the second equation into the first. This yields:

(3+4y)+y=72

Combine like terms:

5y+3=72

Subtract 3 from both sides:

5y=69

Divide both sides by 5:

y=69/5=\$13.80

So, Jeff has $13.80

We know that Jason has three more than four times the amount of money Jeff has.

Therefore, Jason has:

x=13.8(4)+3

Multiply and add:

x=\$58.20

So, Jason has $58.20 and Jeff has $13.80.

And we're done!

7 0
3 years ago
Solve for I.<br> 12x + 7 &lt; -11<br> AND 5.0 – 8 &gt; 40
OLEGan [10]

Answer:

x<3/2

Step-by-step explanation:

12x+7<-11

12x<-11-7

12x<-18

x<-3/2

8 0
3 years ago
30 points if correct.
leva [86]

Multiply her pay per hour times number of hours worked.

For a normal 40 hour week, she is paid 16.34 per hour:

16.34 x 40 = 653.60


Overtime is any  hours over 40, so if she works 60 hours, she would have 20 hours of over time.

Multiply 20 hours by her overtime rate:

20 x 24.51 = 490.20

Now add this to her normal 40 hour pay:

490.20 + 653.60 = 1143.80


So her range is from 40 hours: 653.60 to 60 hours: 1143.80


The answer would be A

5 0
3 years ago
When constructing an inscribed square by hand, which step comes after constructing a circle?
tia_tia [17]

Answer:

C. Use a straightedge to draw a diameter of the circle.

Step-by-step explanation:

I got it right on the test.

5 0
3 years ago
Read 2 more answers
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