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Leviafan [203]
3 years ago
11

What is the value of 7x squared + 2x when x = 3

Mathematics
1 answer:
Vadim26 [7]3 years ago
7 0

Answer:

The value of equation is 69   at x=3

Step-by-step explanation:

Given Equation:

        7x^2+2x

We have to find the value of the expression at x=3

Putting the value of 'x' in the given equation.

                 =7(3)^2+2(3)\\

                 =(7*9)+6\\63+6\\69

The value of the above expression at x=3 is 69.

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15,000 blue trout were released into the Meherrin River for a scientific study. The function, f(x) = 15,000 (9/8)^x represents t
Ainat [17]
I'm guessing you mean f(x)=15,000(9/8)^x. If this is what you mean, the population would increase by about 12,000 (12030.4870605 to be exact).
Step-by-step explanation:
Starting equation: f(x)=15,000(9/8)^x
You can clean up the 9/8 to be 1.125
Now what you want to do is find the answer to (9/8)^5 which is 1.8020324707
Next multiply 1.8020324707 by 15,000 and you get 27030.4870605
Finally 27,030.4870605 - 15,000 gives you 12030.4870605. Which means that the population increased by about 12,000.

Please mark me brainiest cuz I need one more to level up!! Thank you
5 0
3 years ago
A line passes through the point (0,2) and has a slope of -1/2 what is the equation of the line
emmasim [6.3K]

Answer:

y = -1/2x + 2

Step-by-step explanation:

A line in slope-intercept form in y = mx + b

"m" is the slope

"b" is the y-intercept

x and y represent points on the graph

To write an equation, you need "m" and "b".

We already know m = -1/2

The point (0, 2) is the y-intercept. The y-intercept occurs when x = 0.

Points are in the form (x , y), so x = 0 and y = 2.

Therefore b = 2.

Substitute m = -1/2 and b = 2 into the equation:

y = mx + b

y = -1/2x + 2

5 0
3 years ago
Oscar buys his lunch in the school cafeteria. The cost of 15 school lunches is $33.75.
Igoryamba

Answer:

can I see the graphs

Step-by-step explanation:

I cannot see the graph

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3 years ago
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Megan consumed 3.5 gallons of water in one day. How many milliliters are equal to 3.5 gallons, if 1 liter = 1,000 milliliters an
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B, 13,247.5 milliliters
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3 years ago
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Can u guys help me with this plz
8090 [49]

i cant see the pic that good


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3 years ago
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