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andre [41]
3 years ago
11

Please help i tried and don't know what to do

Mathematics
1 answer:
Kipish [7]3 years ago
7 0

In this question we have a graph given and the curve represents parabola or quadratic equation and we have to find the zeroes, that is, we need to find the value of x where the curve crosses the x axis . And from the given graph , we can say that the curve crosses the y axis at y=-8 . and the x axis at x=-4 and x =2. So the zeroes of the given graph is x=-4,2 and the y intercept is -8 .

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One man received 15% more than another man when they shared an inheritance of $4,300. How much did each man receive?
r-ruslan [8.4K]
107.5 + 215 (5 + 10 %) = 322.5
3400 / 2 = 2150
2150 + 322.5 = 2472.5
2150 - 322.5 = 1827.5
*check* 2472.5 + 1827.5 = 4300

Man 1: 2472.5
Man 2: 1827.5
8 0
4 years ago
1. Simplify the expression:<br> [2(-16 + (−1)2)) =<br> * 5
ra1l [238]
Where you type all of it in you get -36
7 0
3 years ago
Complex root of x^2+3x+9=0
Luden [163]

\text{Quadratic formula}

ax^2+bx+c=0\\\\\Delta=b^2-4ac\\\\x_1=\dfrac{-b-\sqrt\Delta}{2a};\ x_2=\dfrac{-b+\sqrt\Delta}{2a}

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

x^2+3x+9=0\\\\a=1;\ b=3;\ c=9\\\\\Delta=3^2-4(1)(9)=9-36=-27\\\\\sqrt\Delta=\sqrt{-27}=\sqrt{(27)(-1)}=\sqrt{27}\cdot\sqrt{-1}=\sqrt{9\cdot3}i=\sqrt9\cdot\sqrt3i=3\sqrt3i

x_1=\dfrac{-3-3\sqrt3i}{2(1)}=-\dfrac{3}{2}-\dfrac{3\sqrt3}{2}i\\\\x_2=\dfrac{-3+3\sqrt3i}{2(1)}=-\dfrac{3}{2}+\dfrac{3\sqrt3}{2}i


i=\sqrt{-1}

6 0
3 years ago
3(x+4y)+5(2x-y) identify each of the properties used in each step
pashok25 [27]

Answer:

distributive property is used in this equation

Step-by-step explanation:

7 0
4 years ago
Read 2 more answers
5k-7=-7<br> solve the equation to what is k
LenKa [72]
So 5k-7=-7
You need to do the opposite of addition,which is subtraction so...
5k-7=-7
+7
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K=0
and to double check it,replace the (or variable) with our answer (0)...
so
5×0-7=-7
solve the problem...and
-7=-7√
5 0
4 years ago
Read 2 more answers
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