MATHEMATICS HIGH SCHOOL

Calculate the discriminant.

x2 – x – 2 = 0

Answers

Answer 1
Answer: \Delta=(-1)^2-4\cdot1\cdot(-2)=1+8=9

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Marisolrode her bicycle if she rode for 2.5 hours? *

20
25
29
30

Answers

Answer:

lolololololololoolololo

Step-by-step explanation:

Answer:

25

Step-by-step explanation:

Can a linear equation and a linear inequality be solved in the same way? Explain why. What makes them different?

Answers

There are some extra mathematical rules on an inequality, for example, when you multiply or divide both sides by a negative number the direction of the inequality must be switched. > to < or < to >, etc. Another difference is that in a linear equation you get a number as the result, in an inequality, you get an interval of numbers.

How to solve -8x+2-16<5x+7x

Answers

- 8 x  + 2 - 16 < 5 x + 7x 

Simplify: ( add / subtract numbers : 2 - 16 )

- 8 x + 2 - 16

- 8 x + 14

Simplify 5x + 7x  = 12 x

-8 x - 14 < 12 x

add 14 to both sides:

- 8 x - 14 + 14 < 12 x + 14

-8 x < 12 x + 14

Subtract 12 x from both sides:

- 8 x - 12 x < 12 x + 14 - 12 x

- 20 x < 14

Multiply both sides by -1 ( reverse the inequality )

(-1) (-20 x ) > ( -1 ) ( 14 )

20 x > - 14

Divide both sides by 20 :

20 x / 20 > -14 / 20

x > - 7 / 10

hope this helps !.

Which prefix means one hundredth?

milli
deci
centi
deca

Answers

The answer to that is centi.

Answer: The answer to that is centi.

7 1/5 - 6 2/5 =??????????

Answers

The answer is 4/5 because you turn 7 1/5 into 6 6/5
6 6/5-6 2/5= 4/5
So the answer is 4/5

Ella bought 11/12 of a pound of green grapes and 3/4 of a pound of red grapes. How much more did the green grapes weigh than the red grapes?

Answers

Answer:

1/6

Step-by-step explanation:

11/12-3/4

=11/12-9/12

=2/12

=1/6

Answer:

2/12 or 1/6

Step-by-step explanation:

11/12-3/4

First convert the 3/4 to 9/12 becase the numbers have to have the same denominater.

3/4=9/12

11/12-9/12=2/12

Simplified would be 1/6
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