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White raven [17]
3 years ago
10

The sum of the roots of 5 - 2m - 3m2 = 0 is:

Mathematics
2 answers:
Irina-Kira [14]3 years ago
5 0
<span>Vieta's formula:

</span>\displaystyle m_1 +m_2 = - \frac{b}{a}= \frac{2}{3}<span>
</span>
lorasvet [3.4K]3 years ago
5 0
If the roots are A and B then

A + B =  -b/a  =  -(-2) / -3 = -2/3
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To eliminate the x-terms and solve for y in the fewest steps, by which constants should the equations be multiplied
vitfil [10]

Answer: I believe this is the answer.

6x-5y=17\\7x+3y=11

----------------------------

7 and -6

or

-7 and 6

5 0
3 years ago
Juma earns $12.50 for each newspaper
Ulleksa [173]
400=12.50x+50

400-50=12.50x
350=12.50x
350÷12.50=x
28=x

he would have to sell 28 news paper subscriptions 
4 0
3 years ago
Quincy says that 3 is a good estimate for 3.4 X 0.09, is he correct? Why?
lord [1]
<span>Quincy says that 3 is a good estimate for 3.4 X 0.09, is she correct? Why?
When we say estimates meaning it is not the exact answer but close to what is the exact.
Now, if Quincy estimated 3 as the product of 3.4 * .09, then let’s check if she has the correct estimates.
=> 3.4 estimates is 3
=> 0.09 estimates is 0.1
Now the answer is 0.3 and not 3.
Thus, Quincy’s estimate is wrong.</span>



4 0
3 years ago
The function h(t) = –16t2 + 96t + 6 represents an object projected into the air from a cannon. The maximum height reached by the
jolli1 [7]
If you've started pre-calculus, then you know that the derivative of  h(t)
is zero where h(t)  is maximum.

The derivative is            h'(t) = -32 t  +  96 .

At the maximum ...        h'(t) = 0

                                       32 t = 96 sec

                                           t  =  3 sec . 
___________________________________________

If you haven't had any calculus yet, then you don't know how to
take a derivative, and you don't know what it's good for anyway.

In that case, the question GIVES you the maximum height.
Just write it in place of  h(t), then solve the quadratic equation
and find out what  't'  must be at that height.

                                       150 ft = -16 t²  +  96  t  +  6 

Subtract 150ft from each side:    -16t²  +  96t  -  144  =  0 .

Before you attack that, you can divide each side by  -16,
making it a lot easier to handle:

                                                         t²  -  6t  +  9  =  0

I'm sure you can run with that equation now and solve it.    
The solution is the time after launch when the object reaches 150 ft.
It's 3 seconds.  
(Funny how the two widely different methods lead to the same answer.)

The answer is from AL2006

6 0
3 years ago
Can someone plz help due in a couple minutes only 3 question I will mark braniliest !
siniylev [52]

Answer:

The donut shop is what is being personified, its not actually calling to him. It is given the human trait of calling or talking.

6. The night.

It is giving it a sort of motion personification, being that the night can make noise, but in this case is being quiet.

7. Diamonds being personified as a friend.

The human triat is being a friend or friendly.

4 0
3 years ago
Read 2 more answers
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