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inysia [295]
3 years ago
10

Which equation best represents the graph shown below?

Mathematics
2 answers:
Korolek [52]3 years ago
7 0

Answer:

f(x) = x^2 - 2

Step-by-step explanation:

This looks like a parabola with the vertex at  (0, -2)

It also goes through points (1, -1) and (-1, -1)

The equation:   f(x) = a (x - h)^2 + k

f(x) = a x^2 - 2

we see   f(1) = -1 =  a (1)^2 - 2 ,

-1  = a - 2,  a = 1

so  f(x) = x^2 - 2

Anton [14]3 years ago
5 0

Answer:

x to the power of 2 equals 3

Step-by-step explanation:

because

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Solve this equation
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B. 9^2

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9^2 (9*9) also equals 81
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2 years ago
Use the following information for problems 1 – 3. Suppose you sign a contract for an annual salary of $50,000 with a guaranteed
erik [133]

Initial salary =  $50,000 .

Rate of raise = 5% each year.

Therefore, each next year salary would be 105% that is 1.05 times.

5% of 50,000 = 0.05 × 50000 = 2500.

Therefore raise is $2500 each year.

According to geometric sequence first term 50000 and common ratio 1.05.

Applying geometric sequence formula

a_n = ar^{n-1}

1) a_n = 50000(1.05)^{n-1}

2) In order to find salary in 5 years we need to plug n=5, we get

a_5 = 50000(1.05)^{5-1}= 50000(1.05)^4

= 50000(1.21550625)

<h3>=$60775.3125.</h3>

3) In order to find the total salary in 10 years we need to apply sum of 10 terms formula of a geometric sequence.

S_n = \frac{a(1-r^n}{1-r}

Plugging n=10, a = 50000 and r= 1.05.

S_10 = \frac{50000(1-(1.05)^{10}}{1-1.05}

S_10 = \frac{50000(0.050)^{10}}{0.05}

= 628894.62678.

<h3>Therefore , you will have earned $ 628894.62678 in total salary by the end of your 10th year.</h3>



7 0
3 years ago
"Sam" and "Martha" are the local names for two lighthouses that guard a particularly dangerous part of the coast. Sam blinks eve
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Answer:

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If 3x + 2y = 5, what is the value of the expression 6x + 4y - 7?
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Answer:

3

Step-by-step explanation:

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Just need the answer:) will give 5 star review:))
Sergeeva-Olga [200]

Answer:

n=5

Step-by-step explanation: happy to hlp

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