3 years ago

Help on algebra II pls asap

Mathematics

1 answer:

timama [110]3 years ago

6 0

Because the inequality is less then or equal two the lines need to be solid, not dotted.

Also the less than would put the solution to the outside of the lines.

The correct graph is Stan.

Answer: the incorrect graph is Lee because he used dotted lines and has the solution on the wrong side of the lines

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lions [1.4K]

The quadratic clearly has two real zeros, two places where it crosses the x axis. That corresponds to a positive discriminant.

Answer: positive

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3 years ago

An arithmetic series contains 20 numbers. The first number is 102. The last number is 159. Which expression represents the sum o

Whitepunk [10]

Answer:

Option B

Step-by-step explanation:

we know that

The sum of an arithmetic series is equal to

S=n(a1+an)/2

where

a1 is the first term

an is the last term

n is the number of terms

In this problem we have

n=20

a1=102

an=159

substitute the values in the formula

S=20(102+159)/2

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3 years ago

Question 1: Find the distance between the points (1, 4) and (5, 1).

Anit [1.1K]

$\bf ~~~~~~~~~~~~\textit{distance between 2 points} \\\\ (\stackrel{x_1}{1}~,~\stackrel{y_1}{4})\qquad (\stackrel{x_2}{5}~,~\stackrel{y_2}{1})\qquad \qquad d = \sqrt{( x_2- x_1)^2 + ( y_2- y_1)^2} \\\\\\ d=\sqrt{(5-1)^2+(1-4)^2}\implies d=\sqrt{4^2+(-3)^2} \\\\\\ d=\sqrt{16+9}\implies d=\sqrt{25}\implies d=5$