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alex41 [277]
2 years ago
12

Please help asap thank you!!!

Mathematics
1 answer:
saul85 [17]2 years ago
3 0

Answer: (3,-5) minimum

Step-by-step explanation:

the vertex is at the bottom so it is a minimum

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Order these numbers from least to greatest.
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Step-by-step explanation:

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Step-by-step explanation: 2+2 is 4

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Does anyone know this
krek1111 [17]

Answer:

<em>a2+1)-(4+2a2) </em>

Step-by-step explanation:

<em>to solve this, we need to get rid of the brackets as follow: </em>

<em>3a2+1-4-2a2  </em>

<em>ading the common terms we have: </em>

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4 0
3 years ago
Can someone help me solve this
ikadub [295]

Answer:

  1. 168.25 ft
  2. 3.125 s

Step-by-step explanation:

It is almost too easy to let a graphing calculator show you the solution. (See attached)

_____

You may be expected to use some actual algebra (or even calculus) to find the solution.

If you've spent any time with quadratics, you know the vertex of ax²+bx+c is located at x=-b/(2a). Here, that means the time to get to the highest point is ...

... t = -100/(2·(-16)) = 100/32 = 3.125 . . . . seconds

Then the highest point is ...

... h(3.125) = -16·3.125² +100·3.125 +12 = 168.25 . . . . feet

_____

Or, you can put the equation into vertex form.

... h(t) = -16t² +100t +12

... = -16(t² +6.25t) +12

... = -16(t² +6.25t +3.125²) +12 +16·3.125² . . . . . add the square of half the t coefficient inside parentheses; add the opposite of the same amount outside parentheses

... = -16(t +3.125)² +168.25 . . . . . simplify

This tells us the peak of the travel of the bullet is at 168.25 ft after 3.125 seconds.

6 0
3 years ago
Nine less one-fourth of a number is 31. find the number
Lemur [1.5K]

Answer:

Step-by-step explanation:

\frac{1}{4} x-9=31\\\frac{1}{4} x=31+9\\x=40 \times 4=160

8 0
3 years ago
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