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Zigmanuir [339]

3 years ago

13

X4 – x3 – 9x2 – 3x + 1 = 0

1 answer:

Diano4ka-milaya [45]3 years ago

6 0

Answer: are we just simplifying?

Step-by-step explanation:

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What is 40.99 times 2.1

posledela

Answer:

86.079

Step-by-step explanation:

40.99*2.1

7 0

3 years ago

Read 2 more answers

ANSWER FAST!!!!!!!

Lemur [1.5K]

Answer:

The angle between the 190 ft. side and the 330 ft. side is $57.9^o$

Step-by-step explanation:

<u>The Law of Cosines</u>

When we know the value of all sides of a triangle, we can compute all of its interior angles by using the Law of Cosines, which is a generalization of the Pythagoras's theorem. If a,b, and c are the known sides of a triangle and $\alpha$ is the angle formed by sides a and b (opposite to c), then

$\displaystyle c^2=a^2+b^2-2ab\ cos\alpha$

We'll use the values a=190, b=330, c=280 because we want to compute the angle opposite to c

$\displaystyle cos\alpha =\frac{a^2+b^2-c^2}{2ab}$

$\displaystyle cos\alpha =\frac{190^2+330^2-280^2}{2(190)(330)}$

$\displaystyle cos\alpha =\frac{36100+108900-78400}{125400}$

$\displaystyle cos\alpha =\frac{66600}{125400}=0,5311$

$\displaystyle \alpha= arccos\ 0.5311$

$\boxed{\displaystyle \alpha= 57.9^o}$

5 0

3 years ago

What is the vaule of tan-240 degrees?

Tom [10]

The answer is 1.732

8 0

3 years ago

When a number is decreased by 7.5%, the result is 61. What is the original number to the nearest tenth?

asambeis [7]

Answer: It's 65.9

Step-by-step explanation:

<h3>decreased by 7.5%</h3>

<h3>means 100% - 7.5% = 92.5%</h3>

<h3>92.5% * x = 61</h3>

<h3>x= 61 / 92.5%</h3>

<h3>x = 65.9459</h3>

<h3>to the nearest tenth :</h3>

<h3>original number is 65.9</h3><h3>Hope this helps have a awesome day/night❤️✨</h3>

4 0

3 years ago

Solve this problem using your knowledge. Problem #20.

Pie

Answer:

I did this

Step-by-step explanation:

3 0

3 years ago