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Zigmanuir [339]
3 years ago
10

Find the x-coordinate of the vertex of a parabola if the x-intercepts are (3,0) and (-9,0)

Mathematics
1 answer:
madam [21]3 years ago
8 0

Answer:

x = -3

Step-by-step explanation:

The vertex lies on the axis of symmetry, whose x-coordinate is halfway between -9 and 3:  x = -3

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Evaluate (x-a+3) if the value of x is (a+7).
Nikitich [7]

Answer:

3(x - a)(x - b)(x - c) when a + b + c = 3x .

Step-by-step explanation:

i don't know but this has to be right

4 0
3 years ago
Help please!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!11
pogonyaev
Answer is A: when you add all the percents it’s 50 the rest is 50%
3 0
3 years ago
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ram is half his fathers age now. ten years ago he was one third his fathers age then what are their present ages
NeX [460]

x   -  Ram's age now

Ram is half his father's age now, so his father's age is two times Ram's age:

2x  - Ram's father age now

x - 10   -  Ram's age ten years ago

2x - 10    - Ram's father age ten years ago

ten years ago he was one third his father's age so his father's age was three times Ram's age:

2x - 10 = 3•(x - 10)

2x - 10 = 3x - 30

-10 + 30 = 3x - 2x

20 = x

2x = 2•20 = 40

Answer:

<u>Ram is 20 years old now, Ram's father is 40 years old now.</u>

8 0
3 years ago
What is the HCF of 20 36 and 45??
tangare [24]

20=1×2×2×5=1×4×5

36=1×2×2×9=1×4×9

45=1×3×3×5=1×9×5[/tex]

  • HCF=1
6 0
3 years ago
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Simplify 2a^2b^3(4a^2+3ab^2-ab)
-BARSIC- [3]
2a^2b^3(4a^2+3ab^2-ab)=? 
<span>
is what I presume you actually meant. </span>
<span>
Pull out the common factors of (4a^2+3ab^2-ab) and you will get </span>
<span>
a(4a+3b^2 -b) </span>

Substitute this back into the original equation and you get 
<span>
2a^2b^3[a(4a+3b^2-b)] = </span>
2a^3b^3(4a+3b^2-b) = 
<span>2a^3b^3(4a-b+3b^2)
</span>
3 0
3 years ago
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