Please what is the solution of(2x+1) (x-3) < 0?

Answers

Answer 1

Answer:

Answer:

-1/2,3

Step-by-step explanation:

(2x+1)(x−3)<0

For the product to be negative, 2x+1 and x−3 have to be of the opposite signs. Consider the case when 2x+1 is positive and x−3 is negative.

2x+1>0

x−3<0

The solution satisfying both inequalities is x∈-1/2,3

Consider the case when x−3 is positive and 2x+1 is negative.

x−3>0

2x+1<0

This is false for any x.

x∈∅

The final solution is the union of the obtained solutions.

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What value of x makes the equation true ? 4(2x-4)=16

Answers

4(2x-4) = 16
4*2x - 4*4 = 16
8x - 16 = 16
8x = 16 + 16
8x = 32 / : 8
x = 4

Answer:

Step-by-step explanation:

6thh grade is harddd yall

Answers

Answer:

Step-by-step explanation:

i recommend using mathaway, type in "4,8,14"

For 4 the lcm is 2 for 8 the lcm is 4 and for 14 it is seven if I am not wrong

Simplify the expression –3 2 . A. 9 B. 6 C. –6 D. –9

Answers

Answer:

see below

Step-by-step explanation:

(-3) ^2

(-3)*(-3)

A negative times a negative

If the problem is

- (3) ^2

- (3*3)

- 9

If 75 pairs of jeans are sold, what is the company’s profit?

Answers

Revenue: 2x² + 17x - 175
Cost: 2x² - 3x - 125
Profit: 20x - 50

Profit = Revenue - Cost
Profit = 2x² + 17x - 175 - (2x² - 3x - 125)
Profit = 2x² - 2x² + 17x + 3x - 175 + 125
Profit = 20x - 50

x = 75

profit = 20(75) - 50
profit = 1500 - 50
profit = 1450

Answer:

1450

Step-by-step explanation:

Find n.
24/48= 3/n
n=_____

Answers

24/48=3/n
cross multiply
24*n=24n
48*3=144
then divide 24 by 144 to get n=6

A 12-foot ladder rest against the side of a house. The base of the ladder is 3 feet away from the side of the house. How high above the ground is the top of the ladder? Round to the nearest tenth of a foot.I would love for someone to help me real quick I am in summer school right now and only have 2 hours left and i have to do a lot of retests. So if anyone could help me in the next 5 minutes or so that would be nice.

Thanks

Answers

right triangle
from base of triangle to wall=a
from floor to top of ladder on wall=b
legnth of ladder=c

legnth=12=c
base is 3 feet away=a
use pythagorean theorem
a^2+b^2=c^2
3^2+b^2=12^2
9+b^2=144
subtract 9
b^2=135
square root both sides
b=√135=3√15

the height is 3√15 feet

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