The population of fish in the lake would be 45 fish
Answer:
3x + 4 > 22 // x = 7 or up
Step-by-step explanation:
I assume this is a 'Take words and put into an equation' so here
'Three times a number'
Lets say a number is represented by x, it'd be 3x
'Four more than'
That's addition, adding onto the previous number it would be 3x + 4
Finally the 'Greater than 22' is > this sign
3x + 4 > 22
If you need to solve for x, then whatever is multiplied by 3 then added by 4 must be more than 22. It can really be anything 7 and up. 3x5 is 15, add 4 and it's 19, which is less than 22. 3x6 is 18, add 4 and its 22, that's equal to it, not greater than. 3x7 is 21, add 4 and it's 25. Anything further along with that will be greater than 22.
The volume is given by
Since the height is 3 times the radius of the base, we can substitute 
:
And we know that the volume is 
(I'm actually assuming that there's a typo in the question, otherwise the options wouldn't match):
The height is 3 times the radius, so it is
Use proportions to solve this. Set up the ratios with dollars on the top and pounds on the bottom and then cross-multiply to solve for x. Like this:
. Cross multiplying gives us 800x=168,000. Divide by 800 to get that x = 210. So $300 equals 210 pounds.
Answer:
The correct option is a=5, b = -4, c=7 ....
Step-by-step explanation:
The standard form is ax²+bx+c=0
where a, b, and c being constants, or numerical coefficients, and x is an unknown variable.
The given expression is:
4x + 5x2 = 8x – 7
To make it a standard equation we will move all the values to the left hand side and 0 will be left at the right hand side.
4x+5x²-8x+7=0
Now solve the like terms and arrange the equation according to the standard form:
ax²+bx+c=0
5x² - 4x +7 =0
Here a = 5
b = -4
c= 7
Thus the correct option is a=5, b = -4, c=7 ....
