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3 years ago

REPOST* which equation or inequality shows the relationship between the plotted points on the number line

Mathematics

1 answer:

Citrus2011 [14]3 years ago

8 0

Answer:

letter a. Po sagot diyan

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Factor completely...................

defon

Answer:

Final answer is A. $9(3x+1)(3x-2)$ .

Step-by-step explanation:

Given expression is $81x^2-27x-18$ .

$81x^2-27x-18$

$=9(9x^2-3x-2)$

We can factor that by splitting middle term into two parts then do grouping as shown below:

$=9(9x^2-6x+3x-2)$

$=9(3x(3x-2)+1(3x-2))$

$=9(3x+1)(3x-2)$

Which correctly matches with choice A. $9(3x+1)(3x-2)$ .

Hence final answer is A. $9(3x+1)(3x-2)$ .

3 0

3 years ago

When a ball is dropped from a state of rest at time t=0t=0, the distance, measured in feet, that it has traveled after tt second

Maru [420]

Part A. To solve for the distance travelled during the interval, all we have to do is to plug in values of t = 3 and t = 3.5 in the equation and the difference would be the answer:

when t = 3: s = 16 (3)^2 = 144 m

when t = 3.5: s = 16 (3.5)^2 = 196 m

Therefore the distance travelled within the interval is:

196 m – 144 m = 52 m

<span>Part B. The velocity is calculated by taking the 1st derivative of the equation. v = ds / dt</span>

s = 16 t^2

ds / dt = 32 t = v

when t = 3: v = 32 (3) = 96 m / s

when t = 3.5: v = 32 (3.5) = 112 m / s

Therefore the average velocity is:

(96 + 112) /2 = 104 m / s

Part C. We can still use the formula v = 32 t and plug in the value of t = 3

v = 32 t = 32 (3)

v = 96 m / s

6 0

3 years ago

-4x+3<9 help please and show your answer

vladimir1956 [14]

Answer:

X =1,5

Step-by-step explanation:

==>-4x+3<9

==>-4x<9-3

==>-4x<6.

==> $x = \frac{6}{4}$

==>x =1.5

8 0

2 years ago

How much is twice the size if im 3 ft 7 in tall

Natasha2012 [34]

Answer:

the answer is 7.1 inches tall

5 0

3 years ago

Cody, the owner of an e-commerce site, buys emerald pendants for $400 and then sells them

Trava [24]

Answer:

The marked up percentage is 112.5%

Step-by-step explanation:

The cost price of the emerald pendant = $400

The selling price of the emerald pendant = $840

Now, the Mark up Price = Selling Price - Cost Price

= $840 - $400 = $450

Also, $\textrm{Percentage of Mark up Price} = \frac{\textrm{the Marked up price}}{\textrm{The Cost Price}} \times 100$

= $\frac{450}{400} \times 100 = 112.5$

⇒ Percentage of Mark up Price = 112.5%

Hence, the marked up percentage is 112.5%

5 0

3 years ago