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pantera1 [17]
3 years ago
12

SOMEONE PLSSSS TELL HOWWWWWW

Mathematics
2 answers:
Vaselesa [24]3 years ago
6 0

Answer: the first graph

Step-by-step explanation:

SVETLANKA909090 [29]3 years ago
5 0
The first one is the correct answer to this mathematical equation.
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What is the vertex of the graph of the function f(x) = x2 + 8x - 2?
vlabodo [156]

Answer:

Vertex is (-4, -18)

Step-by-step explanation:

f(x) = ax^{2} +bx +c

Let (h, k) be the vertex

An easy way to find h is to use the formula h = -b/2a

In your case where f(x) = x^{2} +8x - 2   a = 2 and b = 8

So, h =  -8/2(1) = -8/2 = -4

Substitue -4 in for x to find k

k = (-4^{2}) + 8(-4) - 2

  = (16) - 32 - 2

  = 16 - 32 - 2

  = -18

Vertex is (-4, -18)

Note:  Another way to find the vertex is to complete the square, but this can really be difficult in some cases

5 0
3 years ago
A new cell phone is on sale for 40% off its original price. The sale price is $48.
Yakvenalex [24]
The answer is $120, because you do;

0.40x = 48
YOU DIVIDE 48 ÷ 0.40 = 120
YOU'RE WELCOME ;)

8 0
3 years ago
Emma decides to invest $990,000 in a period annuity that earns a 2.2% APR,
Pani-rosa [81]

Answer: B) 6462.32

Step-by-step explanation:

Compound interest can be calculated via the attachment.

Hope it helps <3

4 0
3 years ago
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Step-by-step explanation:

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