3 years ago

Somebody helpppppp...................???????

Mathematics

1 answer:

olga55 [171]3 years ago

4 0

I’m pretty sure it’s the second one

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3 years ago

Solve the equation for solutions over the interval [0°, 360°).

olchik [2.2K]

Answer:

$x=98.13^\circ,135^\circ,278.13^\circ,315^\circ$

Step-by-step explanation:

$tan^2x+7tanx+8=0,[0^{\circ},360^\circ)$

$tan^2x+7tanx+8=0$

$u=tanx$ <-- U-substitution

$u^2+7u+8=0$

$(u+7)(u+1)=0$

$(tanx+7)(tanx+1)=0$ <-- Replace u with tanx

$tanx+7=0$

$tanx=-7$

$x=98.13^\circ,278.13^\circ$

$tanx+1=0$

$tanx=-1$

$x=135^\circ,315^\circ$

Therefore, $x=98.13^\circ,135^\circ,278.13^\circ,315^\circ$

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3 years ago

ohn is driving around town. When he reaches the gas station, he notes that he has traveled 20 miles. He reaches home 2 hours lat

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Answer:

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Step-by-step explanation:

If you tell me what they are, I can change it and tell you the answer is.

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4 years ago

Guess the rule and write down the missing number:

Ivan

Answer:

Step-by-step explanation:

We are adding the previous two terms

1+5 = 6

5+6 = 11

6+11 = 17

11+17 = 28

The missing term is 17

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