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2 years ago

Find the vertex of the graph of the following quadratic equations y= -3x^2 -12x-13

Mathematics

2 answers:

Igoryamba2 years ago

7 0

Answer:

Step-by-step explanation:

The vertex is a point. The x value is defined as x = - b / 2a where

a = -3

b = - 12

x = - -12/ 2* -3

x = 12 / - 6

x = -2

what is y when x = - 2?

y = -3(-2)^2 - 12(-2) - 13

y = -12 + 24 - 13

y = -1

Does the graph agree? It should

The equation is written as

y = -3(x + 2)^2 - 1

choli [55]2 years ago

3 0

By using the rule -b/2a —> 12/-6= -2

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starting at home, Omar traveled uphill to the gift store for 30 minutes at just 10mph. He then travelled back home along the sam

SashulF [63]

Answer:

average speed for the entire trip is 15 mph

Step-by-step explanation:

Let x be the uphill speed and y be the downhill speed.

We have been given that

Speed of Omar in uphill to reach gift store = x =10 mph

Speed of Omar in downhill to reach his home = y = 30 mph

We know the formula for average speed for the entire trip

$\text{Average speed }=\frac{2xy}{x+y}\\\\=\frac{2\times 10\times 30}{10+30}\\\\=\frac{600}{40}\\\\=15$

Therefore, average speed is 15 mph

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3 years ago

Read 2 more answers

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inna [77]

Answer:

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Step-by-step explanation:

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3 years ago

Juan sells banana bread by weight. He cuts a 1-lb loaf of banana bread into 6 equal slices. He wants to complete the table showi

Westkost [7]

Answer:

0.1 $\frac{}{6}$

Step-by-step explanation:

When Juan cut a 1 lb loaf of banana bread into 6 slices, the weight of each slice forms a repeating decimal. A repeating decimal is a decimal number with repeating digit/s.

i.e $\frac{1}{6}$ = 0.166666666666666...

To express the total weight for each slice, he should write a bar over 6 to show that the number repeats.

i.e $\frac{1}{6}$ = 0.1 $\frac{}{6}$

Note that $\frac{}{6}$ has expressed that the division has 6 as the repeating digit in the decimal number.

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2 years ago

I don’t get this lol can someone tell me the answer ?

Sladkaya [172]

Answer:

8 miles

Step-by-step explanation:

when its 3.5hours look to the left which is 8 miles

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3 years ago

Please help i dont know what this means. Give me a example too.

konstantin123 [22]

Answer:

I assume the other person used goog|e

Anyway here is the answer

First an operation is like an equation 5+5 78/2x^2, something like that

And I just gave examples

Step-by-step explanation:

Epic (8

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2 years ago