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Umnica [9.8K]
3 years ago
12

Ms. Lok is hiking the Grand Canyon. She begins her hike at 12 feet below sea level. Ms. Lok then hikes up 20 feet. a) What is he

r final position?
b) What if she hiked down 20 feet instead of up? Explain why your answer would be different. plss help ​
Mathematics
1 answer:
Virty [35]3 years ago
3 0

Answer:

8 ft up or 32 ft down depends if she goes above sea level or down sea level

Step-by-step explanation:

if you take the 2 away and subtract 10 from 20 you get 10 then subtract the remaining two

If she whent down you would add 12 + 20  

 

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What is the percent of the discount for a $60 item that sells for $45?
goblinko [34]

Answer:

75%

Step-by-step explanation:

45/60 x X/100

45x100

4500/60

75%

4 0
3 years ago
Why must one leg of a triangle that the Pythagorean triple represents need an even-numbered length?
pashok25 [27]

Most of the square numbers are even.so if we need to find root over we need an even number to convert it to perfect square.

See the example below

  • P=3
  • B=4
  • H=5

\\ \ast\bull\rm\longmapsto H^2=P^2+B^2

\\ \ast\bull\rm\longmapsto H^2=3^2+4^2

\\ \ast\bull\rm\longmapsto H^2=9+16

\\ \ast\bull\rm\longmapsto H^2=25

\\ \ast\bull\rm\longmapsto H=\sqrt{25}

\\ \ast\bull\rm\longmapsto H=5

Some other triplets are

  • (6,8,10)
  • (5,12,13)
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6 0
3 years ago
Find the discriminant and the numbers of real roots for this equation: 4x^2+12x+9=0
Len [333]

Answer:

D=0

The quadratic equation has one real root with a multiplicity of 2.

Step-by-step explanation:

Given a quadratic equation:

 ax^2+bx+c=0

You can find the Discriminant with this formula:

D=b^2-4ac

<em> </em>In this case you have the following quadratic equation:

4x^2+12x+9=0

Where:

a=4\\b=12\\c=9

Therefore, when you substitute these values into the formula, you get that the discriminant is this:

D=(12)^2-4(4)(9)\\\\D=0

Since D=0, the quadratic equation has one real root with a multiplicity of 2 .

8 0
3 years ago
What is the rate of change between the points (0,0) and (2,100)?
xxMikexx [17]
I think you can google this
7 0
3 years ago
Read 2 more answers
Need answer asap *** 50 POINTS
lara31 [8.8K]
I’m pretty sure it’s B if not try D
3 0
3 years ago
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