Algebra Answers

Find the number of positive and negative roots of the equations
8 12 10 17 18 5 0
5 4 3 2
x + x − x + x − x + =

If there are initially 2,200 bacteria in a culture and the number of bacteria triple each hour, the number of bacteria after t hours can be found using the formula y = 2200(3)t. How long will it take the culture to grow to 60,000 bacteria?

Eric is making pizza dough. The recipe he is using will make 2 crusts and calls for ¼ cup of olive oil and 3/8 ounce of yeast.Eric gets distracted while making the dough, and accidentally puts 1 ounce of yeast into the bowl with the olive oil. How much more olive oil does Eric need to add so that the dough maintains the correct ratio of olive oil and yeast?

Consider the sets. A = {3x │ x∈ Z}, B = {x ∈ Q │ –5 ≤ x ≤ 10} and C = {factors of 20 in Z}.
Represent A ∩ B, c B C ∪ and C \ A by the listing method and in a single Venn diagram.

Write the equation of the line passing through the given points. Write the equation in standard form Ax+ By= C.

(-3,-7) and (-5,-8)

-2x+9/4x-3 for x=5

The number of revolutions per minute (x) and power (y) hp of a diesel engine are tabulated
below.
x 400 500 600 700 750
y 580 1030 1420 1880 2100
Obtain the regression equation for this data.

At which time , 1:35 or 1:38 do you think opposite rays from? Explain

When the hour is between 1 and 2 o'clock what will the minute hand be between

Four balls of wool will make 8 knitted caps.how many balls of wool will malcom need if he wants to make 6 caps

find the slope of the line that is (a) parallel and (b) perpendicular to the line through the pair of points. (-2,-2) and (0,0)
A) find the slope of the line that is parallel to m= ?
b) the slope of the line that is parallel is undefined

A) find the slope of the line that is perpendicular to m= ?
b) the slope of the line that is perpendicular is undefined