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3 years ago

The quadratic equation y=2x^2-px+6 has equal roots. Find the possible values of p.

1 answer:

5 0

$\Delta=0\\
\Delta=(-p)^2-4\cdot2\cdot6=p^2-48\\
p^2-48=0\\
p^2=48\\
p=\sqrt{48} \vee p=-\sqrt{48}\\
p=4\sqrt3 \vee p=-4\sqrt3
$

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Which is a scaled copy of Polygon A?Identify a pair of corresponding sides and a pair of corresponding angles. Compare the areas

jonny [76]

Answer:

See Explanation

Step-by-step explanation:

The question is incomplete as the polygon A (and other possible polygons to select from) are not given. So, I will answer on a general term.

Assume that Polygon A is a rectangle of dimension 2ft by 5ft.

$Length = 2ft$ $Width = 5ft$

Possible scaled copies can be gotten by multiplying the dimension of A by the same scale factor.

Take for instance, the scale factor k is:

$k = 3$

A scaled copy of polygon A (say polygon B) is: 6ft by 15ft

This is gotten by:

$Length = 2ft * 3 = 6ft$ $Width = 5ft * 3 = 15ft$

The area of A is:

$Area = 2ft * 5ft = 10ft^2$

The area of B is:

$Area = 6ft * 15ft = 90ft^2$

See attachment for polygons

Comparison

The area of B is greater than the area of B.

This method can be applied to scale factors

3 0

3 years ago

<img src="https://tex.z-dn.net/?f=8%20%2B%203%20%5Ctimes%204" id="TexFormula1" title="8 + 3 \times 4" alt="8 + 3 \times 4" align

Ira Lisetskai [31]

Answer:

20 is correct answer

Step-by-step explanation:

8+3×4

=8+12

=20

Remember always follow bodmas rule 

hope it helped you:)

thanks!

8 0

3 years ago

Read 2 more answers

a boat travels 16 miles due north in 2 hours and 24 miles due west in 2 hours. What is the average speed of the boat?

Stels [109]

Average speed = total miles / total time
= (16+24)/(2+2)
=40/4= 10mph

6 0

3 years ago

Find the values of x that satisfy

mr_godi [17]

Setup 2 problems
2x - 7 < 15 and 2x - 7 > -15
2x < 22 2x > -8
x < 11 x > -4

Or you can write it -4 < x < 11

7 0

3 years ago

a truck costing 25000 with a residual value of 5000. the truck's estimated life is 10 years. what is the book value at the end o

sineoko [7]

$25,000 - 5,000 = $20,000
Since the useful life is 10 years or 10% per year, double-declining rate would be 20%

Year 1
$20,000 x .2 = $4000
Book Value = $16,000

Year 2
$16,000 x .2 = $3,200
Book Value = ($16,000-3,200) =$12,800

3 0

4 years ago