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3 years ago

How many roots does the polynomial equation have?

Mathematics

1 answer:

erik [133]3 years ago

3 0

answers

the answers is 6

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Use the cosine ratio or the inverse cosine to solve for x. Round your answer to the nearest tenth.

maria [59]

Answer:

x ≈ 12.6 m

Step-by-step explanation:

By using cosine ratio in the given right triangle RTS,

cos(S)° = $\frac{\text{Adjacent side}}{\text{Hypotenuse}}$

cos(33)° = $\frac{\text{ST}}{\text{SR}}$

cos(33)° = $\frac{x}{15}$

x = 15.cos(33)°

x = 12.58

x ≈ 12.6 m

Therefore, measure of side ST = 12.6 m is the answer.

7 0

3 years ago

Lizzy wants to solve the equation 6(2x + 1) = 4x – 5. Which step would be an appropriate first step for Lizzy to take to solve f

e-lub [12.9K]

Answer:

distribute parenthesis

Step-by-step explanation:

6(2x + 1) = 4x - 5 ← distribute parenthesis on left side

12x + 6 = 4x - 5 ( subtract 4x from both sides )

8x + 6 = - 5 ( subtract 6 from both sides )

8x = - 11 ( divide both sides by 8 )

x = - $\frac{11}{8}$

7 0

2 years ago

How do you solve quadratic equations?

masha68 [24]

In any equation there is a variable (usually x). In a quadratic equation there is a lot involved.

-B (+or-) sqrt of b^2 - 4 x A x C
________________________ divide it by
2 x A
There is usually an original equation that looks like: Ax^2 + Bx + C = 0 Use the variables from the equation to the left to fill the upper equation. (You can also look up a better formula if confused).

8 0

3 years ago

Select the correct answer.

lyudmila [28]

Step-by-step explanation:

because degree is power.. so the expression with power of 8 is A

for B, the power is 6

for C the power is 9

and D the power is 2

8 0

2 years ago

X is 30% of 200, What is x? ( is/of = p/100) * Your answer

Inessa [10]

Answer:

30/100 *200/1= 6000/100=60

8 0

3 years ago