3 years ago

Please help i suck at math:'(

Mathematics

2 answers:

evablogger [386]3 years ago

8 0

Answer: B 6400 m

Step-by-step explanation:

Nina [5.8K]3 years ago

7 0

The answer is B. 6,400 meters

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What is the quadratic. Formula?

balu736 [363]

Answer:

$x = \frac{ - b ± \sqrt{ {b }^{2} - 4ac } }{2a}$

Step-by-step explanation:

For example, we'll use this quadratic equation.

${x}^{2} + 5x + 6$

To understand how to plug it into the formula we need to know what each term represents.

$a {x}^{2} + bx + c$

So the equation above would be put into the formula like this.

$x = \frac{ - 5± \sqrt{ {5}^{2} - 4(1)(6) } }{2(1)}$

Then we would solve

$\frac{ - 5± \sqrt{25 - 24} }{2} \\ \\ = \frac{ -5±1}{2}$

Now, the equation will branch off into one that solves when addition and one when subtraction.

$\frac{ - 5 + 1}{2} = \frac{ - 4}{2} = - 2 \\ \\ \frac{ - 5 - 1}{2} = \frac{ - 6}{2} = - 3$

So x={-3, -2} (-3 and -2)

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2 years ago

I need major help now it’s an emergency

irina1246 [14]

Answer:

yes because together the first 2 people made 27 then you would add 8 to that

Step-by-step explanation:

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2 years ago

12. Which expression is equivalent to 5x + 9?

drek231 [11]

Answer:

the first one, 5(x-4) + 29

Step-by-step explanation:

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2 years ago

Evaluate the expression: H - 7 for H = 22

Orlov [11]

Answer:

Step-by-step explanation:

H - 7

When H = 22, replace H with 22 in the equation.

22 - 7 = 15

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2 years ago

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During a visit to the tide pools, Brent observed 16 sea stars, 4 sea urchins, and 52 sea anemones. What is the ratio of sea anem

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Answer:

16 to 52

Step-by-step explanation:

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2 years ago