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Valentin [98]
3 years ago
8

Which Earth feature was created in a similar way to how much of the solar system was formed? A. Meteor Crater B. the Grand Canyo

n C. the Petrified National Forest D. Half Dome in Yosemite National Park
Mathematics
1 answer:
Andrei [34K]3 years ago
8 0

Answer: i think its b.

Step-by-step explanation:

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Find the possible values of the constant k if the roots of the quadratic equation
Anastasy [175]

Answer:

{b}^{2}  - 4ac = 0 \\  { ( - k  - 2)}^{2}  - 4(1)(4)  = 0\\  {k}^{2}  + 4k + 4 - 4 = 0 \\ {k}^{2}  + 4k = 0 \\ k(k + 4) = 0 \\  \therefore \: k = 0 \:  or \: k =  - 4

5 0
3 years ago
A phone company offers two monthly plans. Plan A costs 14 plus an additional 0.09 for each minute of calls. Plan B costs 18 plus
Sliva [168]

Answer:

200 minutes

Step-by-step explanation:

14 + 0.09 x = 18 + 0.07 x

0.09 x - 0.07 x = 18 - 14

0.02 x = 4

x = 400/2 = 200

8 0
3 years ago
Which direction does the graph of f(x) = −18 + x2 − 3x open?
Mekhanik [1.2K]
Please write this equation as    <span>f(x) = −18 + x^2 − 3x       

Rewrite it in descending order by powers of x:  f(x) = x^2 - 3x - 18

Since the coefficient of the x^2 term is +, the graph opens UP.</span>
7 0
3 years ago
4y+2y+x+2x please help
DochEvi [55]

Answer:

Solution

Solution

3

+

6

Step-by-step explanation:

This is the best of what I got.

8 0
3 years ago
Find two consecutive even integers whose product is 288
Trava [24]
So I’m going to solve this using algebra OK?
So what you do is take the first integer as X.
Then we know that x(the first number) + X+2(the second number) is 288 right?
So we solve that saying x+x+2=288.
So 2X+2=288
2X+2-2=288-2 right?
So 2X=286.
So x is 286/2 right?
So x is 143.
Now the first number is 143 right?
So the second number should be 143+2 so 145.
I know they are not even but these are the solutions.
I don’t think there are any consecutive even numbers that add up to 288
6 0
3 years ago
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