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zavuch27 [327]
3 years ago
6

HELPPP ME NOW (7x^4 − x^2 + 10x + 15) ÷ (x + 1)

Mathematics
2 answers:
SIZIF [17.4K]3 years ago
6 0

Answer:

(7x4-x2+10x+15) / (x+1)

Step-by-step explanation:

natali 33 [55]3 years ago
3 0

Answer: 7x^(2)-7x^(2)+6x+4+(11)/(x+1)

Step-by-step explanation:   Set up the synthetic division using the coefficients of the numerator and the root in the denominator. Divide using the rules for synthetic division.

not sure how im suppose to answer but yeah

brainliest or a thank you please :)) <33

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Jane's new elevation is -77 feet.

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given triangle DEF find side d and angle E. Round to tenths! angle D is 65 degrees. side DF is 6 and side DE is 9.
Damm [24]

Answer:

d is 8.4 units

m∠E is 40.3°

Step-by-step explanation:

Let us use the cosine rule to find the side d and then use the sine rule to find the measure of angle E

  • Cosine rule is d² = e² + f² - 2(e)(f)(cos D)
  • Sine rule is \frac{sinD}{d}=\frac{sinE}{e}=\frac{sinF}{f}

In Δ DEF

∵ EF is represented by d

∵ DF = 6 units and is represented by e

∴ e = 6

∵ DE = 9 units and is represented by f

∴ f = 9

∵ m∠D = 65°

- Substitute the values of e, f and m∠D in the cosine rule above

∴ d² = (6)² + (9)² - 2(6)(9)(cos 65°)

∴ d² = 71.35722773

- Take √  for both sides

∴ d = 8.447320743

- Round it to the nearest tenth

∴ d = 8.4 units

Now let us use the sine rule to find m∠E

∵ \frac{sin(65)}{8.4}=\frac{sin(E)}{6}

- By using cross multiplication

∴ 8.4 × sin(E) = 6 × sin(65)

∴ 8.4 sin(E) = 6 sin(65)

- Divide both sides by 8.4

∴ sin(E) = 0.647362705

- Use sin^{-1} to find m∠E

∴ E = sin^{-1} (0.647362705)

∴ m∠E = 40.34305

- Round it to the nearest tenth

∴ m∠E = 40.3°

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3 years ago
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