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3 years ago

Use the graphs to estimate both solutions to x^2+x-4=0

Mathematics

1 answer:

Bogdan [553]3 years ago

4 0

Answer:

No graph so we'll use the quadratic formula

x^2+x-4=0

a = 1

b = 1

c = -4

x = -1 +- sqr root (1^2 - 4 * 1 * -4) / 2

x = (-1 +- sqr root (1 +16) ) / 2

x1 = (-1 + sqr root (17)) / 2

x2 = (-1 - sqr root (17)) / 2

Step-by-step explanation:

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1/2 - 2/9 = subtract. Simply if possible.

kozerog [31]

Answer:

$\frac{5}{18}$

Step-by-step explanation:

$\frac{1}{2} -\frac{2}{9} =\frac{9}{18} -\frac{4}{18}=\frac{5}{18}$

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3 years ago

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Mashcka [7]

Answer:

THANK YOU 505

Step-by-step explanation:

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4 years ago

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Find cot theta. (-6,-3sqrt(5)

cupoosta [38]

0 Pretend that is theta XD

cot 0 = $\frac{1}{tan0}$

Find tan 0.

tan 0 = $\frac{y}{x}$

tan 0 = $\frac{-3\sqrt{5}}{-6}$

tan 0 = $\frac{\sqrt{5}}{2}$

cot 0 = $\frac{1}{tan0}$

cot 0 = $\frac{1}{\frac{\sqrt{5} }{2} }$

Multiply 2/√5 to the numerator and the denominator (or multiply the reciprocal of the denominator to the top and bottom of the fraction)

cot 0 = $\frac{1}{\frac{\sqrt{5}}{2} } (\frac{\frac{2}{\sqrt{5}} }{\frac{2}{\sqrt{5}}} )$

cot 0 = $\frac{2}{\sqrt{5}}$

Multiply √5 to the numerator and the denominator

cot 0 = $\frac{2}{\sqrt{5}} (\frac{\sqrt{5} }{\sqrt{5} })$

cot 0 = $\frac{2\sqrt{5}}{5}$

5 0

3 years ago

Geometry help please

cestrela7 [59]

Use an app called socratic

6 0

4 years ago

Jacy earns 14$ each second. He earns 14$ each second for 18 years. How much money would he have if he saved up the money?

Ratling [72]

they deleted my answer and they wont tell me why- let me try again

answer: jacy would earn a total of $7,952,345,352 if he saved up for a total of 18 years.

explanation:

the total of seconds among 18 years: 568,024,668 seconds.

we now take the 568,024,668 and multiply it by 14.

our final answer is $7,952,345,352.

i dont know if this is a genuine question or not but here-

7 0

2 years ago