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lisov135 [29]
3 years ago
11

What is the solution set of 2x2+x=15?

Mathematics
2 answers:
vodomira [7]3 years ago
7 0
4+x=15
---> x=15-4
---> x=11
Alexeev081 [22]3 years ago
5 0

Answer:

5/2,-3

Step-by-step explanation:

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What is -4x-5=6-11x? Please show work
BartSMP [9]
First, you would add 11x to both sides, because you are trying to separate the variable pieces and the constants (integers).

If performed correctly, you would get the equation
7x-5=6

Then, you would add 5 to both sides, to get the 7x alone.

This results in the equation 7x=11

Then, to get x alone, without a coefficient, you would need to divide both sides by 7.

x=11/7


3 0
3 years ago
The population of Greenville is currently 50,000 and declines at a rate of 1.2% every year. This models:
astraxan [27]

Answer:

Every year they are losing 600 people a year.

Step-by-step explanation:

You take 50,000/100= 500 x 1.2=600

6 0
3 years ago
An Internet service provider charges $18 per month plus an initial set-up fee of $45.
andrew-mc [135]
A. 18m+45=t

m=months
t=total cost

b.
1 month=$63
6 months = $153
12 months (1 year)= $261
5 0
2 years ago
An eagle is soaring 155 meters above sea level while a blue shark is swimming 445 meters below sea level. How far are these two
maw [93]

Answer:

610 meters

Step-by-step explanation:

-455 is where the shark is we wanna go to sea lvl so we gotta add 455

+455

155 is where the agle is, we add 155 because shark is now at sea lvl

155+455=610

5 0
2 years ago
A plastic sun visor allows light to pass through but reduces the intensity of the light. the intensity is reduced by 5% if the p
irinina [24]

Answer: The equation is f(x) = 0.95^{x};

The piece of plastic has to have 10mm of thickness.

Step-by-step explanation: It is known that with 1 mm of thickness, 5% of the intensity is reduced. So, 95% of the light is transmitted.

For each milimetre added, "more" 95% of light is transmitted.

For example, if another milimetre of plastic is added, another 0.95 of light is transmitted:

0.95.0.95 = 0.9025 of light reach the visor

So, the model that relate thickness of plastic and intensity of light is:

f(x) = 0.95^{x}

in which:

f(x) is the intensity of light;

x is thickness in mm;

Using the equation, the thickness necessary to reduce intensity to 60% is:

f(x) = 0.95^{x}

0.6 = 0.95^{x}

log 0.6 = log 0.95^{x}

x. log (0.95) = log (0.6)

x = \frac{log 0.6}{log 0.95}

x = 9.95

x ≈ 10

The thickness necessary to reduce intensity of light to 60% is 10mm.

6 0
3 years ago
Read 2 more answers
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