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Lerok [7]
3 years ago
6

Can I get help with this please?

Mathematics
1 answer:
sammy [17]3 years ago
8 0
First equation:
5(x+1)=20 —— distribute the 5 to the x and 1
5x+5=20 ——- subtract 5 from 20
5x=15 ———— divide by 5 from both sides
X=3 ————— answer

Second equation:
5x+1=20——— subtract 1 from 20
5x=19 ———— divide by 5 from both sides
X=19/5———— answer in fraction form
X=3.8————- answer in decimal form
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28.3

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What is the vertex of the following graph?
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Identify the domain and range of the function f(x) = 2x2 − 6x − 9.
mash [69]
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domain is inputs or x vvalues

we can use any x value
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find thatminimum
find the vertex
for
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Where a and b are the two legs and  C is the hypotenuse.

In this situation, the hypotenuse will be length of the ladder , and either  a or b will be the length of the ladder from the building or the length of how long the ladder.

a will be 3 ,  and c will be 20. Input in the values  into the formula and solve for b.

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-9              -9

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    b = \sqrt{391}

  b  = 19.77371   round to the nearest tenth is ,  19.8

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