3 years ago

How to do quadratics

1 answer:

6 0

First, put your polynomial in standard form(ax²+bx+c=0). Then plug the a,b and c for x=(-b+-√b²-4ac)÷2a. As a result, you can either get one, two or no real answers.

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Joanna received a loan from the bank for $5,000, and she plans on paying the loan back in 3 years. She will have paid $800 in si

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3 years ago

A parallelogram is ______ a rhombus. never, always, sometimes

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never

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3 years ago

Please help I asked this question earlier and nobody answered! :(

tatiyna

Answer:

Step-by-step explanation:

One way to tell is to put both equations into slope-intercept form. That form is usually written $y=mx+b$ where m is the slope and b is the y-intercept.

Solve the first equation for y.

$6x+2y=5 \\ 2y=-6x+5 \\ y=-3x+5/2$

The slope of this line is -3, and its y-intercept is 5/2.

Solve the second equation for y.

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3 years ago

Find the surface area of composite figure. use 3.14 for π. round to the nearest tenth

777dan777 [17]

Answer:

334 in^2.

Step-by-step explanation:

The surface area = area of the top prism + area of the bottom - 2 * area of the base of the top smaller prism

= 2(5*3 + 5*3 + 3*3) + 2(9*7 + 9*5 + 7*5) - 2* 3*5

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= 334

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2 years ago