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Sonbull [250]
3 years ago
6

Solve for x in the equation 2x^2 + 3x - 7 = x^2 + 5x + 39

Mathematics
1 answer:
Nataliya [291]3 years ago
7 0
Sorry I can't explain this one much but it is x = 1+- square root of 47
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Use the Figure of the triangular prism to find the volume?<br>please help me
Dafna11 [192]

Answer:

130ft

Step-by-step explanation:

4 0
2 years ago
Note that this problem is given as
Katena32 [7]
Note that this problem is given as

(m - n)/2

where the numerator is m - n and then the denominator is 2.

You will need to find the value in the numerator, then divide by 2.

show steps how you got your answer

8 0
3 years ago
Question 4 Unsaved The price of a movie ticket is $8 for an adult and $5 for a child. The following equation represents the tota
FrozenT [24]

The equation c=8x+5y represents the total cost, c, of buying x number of adult tickets and y number of child tickets.

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5y=c-8x.

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5 0
3 years ago
Two mechanics worked on a car. The first mechanic to work for 5 Hours in the second mechanic work for 15 Hours. Together they ch
Butoxors [25]
<h2>Hello!</h2>

The answers is:

The first mechanic's rate is $70 per hour.

The second mechanic's rate is $110 per hour.

<h2>Why?</h2>

Let's write the given information in order to make the equations that will help us to solve this problem.

Let be "x" the first mechanic's rate and "y" the second mechanic's rate, so:

If the first mechanic worked for 5 hours and the second mechanic worked for 15 hours, and the together charged a total of $2000.

5x+15y=2000

Also, we know that the sum of the two rates was $170 per hour, so:

x+y=180

Then, isolating "x" and replacing it into the first equation, we have:

x=180-y

5(180-y)+15y=2000

900-5y+15y=2000

10y=2000-900

10y=1100

y=\frac{1100}{10}=110

So, the second mechanic's rate is $110 per hour.

Now, to calculate the first mechanic's rate we need to replace "y" into the second equation:

x+y=180\\x+110=180\\x=180-110=70

So, the first mechanic's rate is $70 per hour.

Have a nice day!

7 0
2 years ago
How many solutions are there to the equation, 220=2x-12x
galben [10]

Hi,

For the equation: 220=2x-12x there is only one solution, x=−22.

Have a great day!

8 0
3 years ago
Read 2 more answers
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