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klemol [59]
4 years ago
12

Find a formula for the quadratic function whose graph has vertex (-1,3) and y-intercept -3.

Mathematics
1 answer:
Blababa [14]4 years ago
7 0

Answer:-6x^2-12x-3


Step-by-step explanation:

assume the equation is ax^2+bx+c=y

c=-3

-b/2a=-1

a-b+c=3

a=-6

b=-12


You might be interested in
2 5/7+4 3/5= help please
Ainat [17]

Answer:

7\frac{11}{35}

Step-by-step explanation:

2\frac{5}{7}+4\frac{3}{5}

add the whole numbers

2+4=6

combine the fractions

\frac{5}{7}+\frac{3}{5}

LCM is 35 because 7 * 5 =35

\frac{5}{7}=\frac{5\cdot \:5}{7\cdot \:5}=\frac{25}{35}

\frac{3}{5}=\frac{3\cdot \:7}{5\cdot \:7}=\frac{21}{35}

\frac{25}{35}+\frac{21}{35}=\frac{25+21}{35}

=\frac{46}{35}

change the improper fraction into mixed number

6+1\frac{11}{35}

=7\frac{11}{35}

3 0
4 years ago
Can someone help me on this table?
Butoxors [25]
D is .001. C is 1/1000.
To find b you have to do 5/6=x/100 and once you find that you can find a by moving the decimal over to the left two times
3 0
3 years ago
You've baked 26 cookies, which is two-thirds of all the cookies you planned to bake. How many cookies did you plan to make?
hodyreva [135]

Answer,

<em>(26/2) * 3</em>

<em>= 39</em>

Explanation,

<u><em>26 cookies is only 2/3 of 3/3. So, we divide 26 by 2 to see how many cookies are in 1/3. We then can find out that when you make 1/3 of the cookies there are 13. Since that is only 1/3 and we want to find out 3/3. We multiply 13 by 3 and get 39 which is all the cookies she planned to make.</em></u>


<u><em>Hope this helps :-)</em></u>

7 0
3 years ago
Follow the directions to solve the system of equations by elimination. 8x + 7y = 39 4x – 14y = –68 Multiply the first equation t
Hitman42 [59]

Answer:

The solution is ( 1/2 , 5)

Step-by-step explanation:

∵ 8x + 7y = 39 ⇒ (1)

∵ 4x - 14y = -68 ⇒ (2)

Multiply (1) by 2

16x + 14y = 78 ⇒ (3)

Add (2) and (3)

∴ 20x = 10 ⇒ x = 10 ÷ 20 = 1/2

∴ x = 1/2

By substitute in (1)

8(1/2) + 7y = 39 ⇒ 7y = 39 - 4 = 35 ⇒ y = 35 ÷ 7 = 5

∴ y = 5

∴ The solution is ( 1/2 , 5)

To check:

8(1/2) + 7(5) = 4 + 35 = 39 = R.H.S

4(1/2) - 14(5) = 2 - 70 = -68 = R.H.S

8 0
4 years ago
Read 2 more answers
HELP ME !!! PLEASE ! I NEED HELP WITH THESE 2 PROBLEMS !!!! 20 POINTS!!!
Elena-2011 [213]
In the first problem, the student is trying to find the solution of the two equations
so the student should use both equations
what the student did was only use the 2nd equation twice (if you use the same equation there are infinite solutions) when he/she should have used both equations

for the 2nd problem
trashaway=0.25x+25 where x=number of pounds
garbagenomore=45
solve where they intersect or where they are equal
45=0.25x+25
20=0.25x
80=x
80lb
4 0
3 years ago
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