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3 years ago

15 points ! i need help with this. Screenshot is below

Mathematics

1 answer:

USPshnik [31]3 years ago

8 0

AB would be -7/4

BC would be 1/7

CD would be -5/3

AD would be 1/2

Therefore it would be neither a parallelogram or trapezoid because neither pair of opposite sides are parallel.

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URGENT!! Solve the following for θ, in radians, where 0≤θ<2π.

lidiya [134]

Answer: 0.93 radians & 2.21 radians

<u>Step-by-step explanation:</u>

$-4sin^2\theta-3sin\theta+5=0\\\\\text{Since this is not factorable, use the quadratic formula to find the roots:}\\\\sin\theta=\dfrac{-(-3)\pm \sqrt{(-3)^2-4(-4)(5)}}{2(-4)}\\\\\\.\quad=\dfrac{3\pm \sqrt{9+80}}{-8}\\\\\\.\quad=\dfrac{3\pm\sqrt{89}}{-8}\\\\\\.\quad=\dfrac{3\pm9.43}{-8}\\\\\\.\quad=\dfrac{12.43}{-8}\quad and\quad \dfrac{-6.43}{-8}\\\\\\.\quad=-1.55\quad and\quad 0.80\\\\\\\theta=sin^{-1}(-1.55)\quad and\quad \theta=sin^{-1}(0.80)$

$\theta=not\ valid\qquad and\quad \theta=0.927$

$\theta = 0.927\ radians\text{\ in the 1st quadrant and}\\\pi-0.927=2.21\ radians\text{\ in the 2nd quadrant}$

6 0

4 years ago

Read 2 more answers

Need help asap rocky :))

antoniya [11.8K]

The value of ∠EOF is 75°.

Step-by-step explanation:

Let us take O be the center of the circle.

Given,

∠AOB = 45°

∠COD = 60°

To find the ∠EOF (value of x)

Now,

Since AD is the diameter of the circle, ∠AOD = 180°

∠AOB+∠COD+∠BOC = ∠AOD

Or, 45°+60°+∠BOC = 180°

or, ∠BOC = 180°-(45°+60°)

= 75°

Again,

∠BOC = ∠EOF as they are vertically opposite angle.

Hence,

∠EOF = 75°

4 0

3 years ago

Read 2 more answers

The average salary of a professional basketball player is about 5.15×10^6 while the national average is about 42,980, about how

rewona [7]

5.15 × 10^6 converted to regular form is 5,150,000, which is clearly more than 42,980. In fact, it's about 5,107,020 more.

3 0

3 years ago

Which is the best of -3/5) (17 5/6)?

Zolol [24]

Answer:-9.

Step-by-step explanation: The actual answer is 10 7/10...

The closest estimate therefore is -9

5 0

3 years ago

Read 2 more answers

11.)-If PQRS is a parallelogram, find the values of x and y.

defon

Step-by-step explanation:

For no. 11

13x + 15 = 19x - 9 ( being opposite sides of parallelogram)

19x - 13x = 15 + 9

6x = 24

x = 4

Also,

4y + 7 ° + 10y - 37° = 180° { being co-interior angles }

14y - 30° = 180°

14y = 210°

y = 210° / 14

y = 15°

For no. 12

5x + 38° = 8x - 19° { being opposite angles of parallelogram }

8x - 5x = 38° + 19°

3x = 57°

x = 19°

Hope it will help :)

4 0

3 years ago