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Yanka [14]
3 years ago
7

What is a shape that has 3 faces 2 edges No vertices ?? Please help!

Mathematics
1 answer:
mart [117]3 years ago
6 0
Hello!

A cylinder has 3 faces 2 edges and 0 vertices

The answer is cylinder

Hope this helps!
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What is 5/9*2 4/ equal
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The answer is 1.11111
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Leslie is going to the state fair with her friends but can only stay for 3 hours. The event offers two different pricing structu
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3 years ago
Which second-degree polynomial function has a leading coefficient of –1 and root 5 with multiplicity 2?
PIT_PIT [208]
A second degree polynomial function has the general form:

                  \displaystyle{f(x)=ax^2+bx+c, where a\neq0.

The leading coefficient is a, so we have a=-1.

5 is a double root means that :

i) f(5)=0,
ii) the discriminant D is 0, where D=b^2-4ac.

Substituting x=5, we have

                                        f(5)=a(5)^2+b(5)+c,

and since f(5)=0, and a is -1 we have:

                                          0=-25+5b+c
thus c=25-5b.


By ii) \displaystyle{b^2-4ac=0.

Substituting a with -1 and c with 25-5b we have:
                                     
          \displaystyle{b^2-4ac=0
          \displaystyle{b^2-4(-1)(25-5b)=0
          \displaystyle{b^2+4(25-5b)=0
          \displaystyle{b^2-20b+100=0
          \displaystyle{(b-10)^2=0
          \displaystyle{b=10 


Finally we find c: c=25-5b=25-50=-25

Thus the function is        \displaystyle{f(x)=-x^2+10x-25


Remark: It is also possible to solve the problem by considering the form

f(x)=-1(x-5)^2 directly.

In general, if a quadratic function has leading coefficient a, and has a root r of multiplicity 2, then its form is f(x)=a(x-r)^2
5 0
2 years ago
Read 2 more answers
Of 8
Tomtit [17]

Answer:

98.5kg

Step-by-step explanation:

since we are rounding to the nearest whole number, our answer will use ±0.5

as we are calculating upper bound, we will add 0.5 to the original weight, so the answer is 98.5 kg

6 0
2 years ago
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