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3 years ago

Please answer this question for me. dont scam i have an exam tomorrow

Mathematics

1 answer:

Vanyuwa [196]3 years ago

6 0

Answer:

Step-by-step explanation:

The sum of interior angles of ΔOCB & ΔOCA = 180° x 2 = 360°

α + β + γ + (360°-x) = 360°

x = α + β + γ

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Caroline took a math test and got 19 out of 25 questions correct. What percent of the questions did she answer correctly?

algol [13]

Answer:

76%

Step-by-step explanation:

do the amount of correct answers divided by the total of questions asked.

5 0

3 years ago

The information given represents lengths of the sides of a right triangle with c the hypotenuse. Find the correct missing length

Ksju [112]

Here is the work with the answer. Hope this helps. God bless

5 0

3 years ago

Find the equation of the plane passing through the points

erica [24]

Extract the normal vectors from the given planes:

$-2x+y+z+2=0\implies\vec n_1=(-2,1,1)$

$x+y-3z+1=0\implies\vec n_2=(1,1,-3)$

(which are unique up to their signs, meaning either $\vec n_1$ or $-\vec n_1$ are valid choices for the normal vector)

The third plane must be perpendicular to both these given planes, which means it would be parallel to both $\vec n_1$ and $\vec n_2$ , which in turn means its own normal vector $\vec n_3$ should be perpendicular to both $\vec n_1$ and $\vec n_2$ .

Enter the cross product:

$\vec n_3=\vec n_1\times\vec n_2=(-4,-5,-3)$

or (4, 5, 3), which also works.

The given plane passes through (-1, 1, 4), so its equation is

$(x+1,y-1,z-4)\cdot\vec n_3=0$

Simplify:

$(x+1,y-1,z-4)\cdot(4,5,3)=0$

$4(x+1)+5(y-1)+3(z-4)=0$

$\boxed{4x+5y+3z=13}$

3 0

3 years ago

Plss help!!! (answer A and B individually!)

Diano4ka-milaya [45]

Answer: check the photo

Step-by-step explanation: im taking the test rn

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3 years ago

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gulaghasi [49]

Answer:

1.5

Step-by-step explanation:

(6,-4)*1.5=(9,-6)

(2,-8)*1.5=(3,-12)

7 0

3 years ago