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3 years ago

Pls answer quick I will give brainliest

Mathematics

1 answer:

eimsori [14]3 years ago

6 0

Answer:

EBC and CBF are supplementary.

EBD=66

Step-by-step explanation:

Since vertical angles are congruent, ABE=CBF

ABE=40-x

40-x + 6x-30=90

5x+10=90

5x=80

x=16

16(6)-30=66

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Watch help video Given mn, find the value of x. (6x-3)⁰ (2x+13)°

Ilia_Sergeevich [38]

Answer:

x = 4

Step-by-step explanation:

(6x - 3)° = (2x + 13)° are vertical angles that equal each other get x by itself and solve for x.

(6x - 3)° = (2x + 13)°

6x - 2x = 13 + 3

4x = 16

x = 4

Substitute x for the angles.

(6x - 3)° = ?

(6*4 - 3)° = ?

(24 - 3)° = 21°

(2x + 13)° = ?

(2*4 + 13)° = ?

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1 year ago

What values are not in the domain of (-5+2x^2)/7-8x ?

NemiM [27]

$\frac{-5 + 2x^{2}}{7 - 8x}$

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$\frac{7}{8} \neq x$

Answer: $\frac{7}{8}$ is not in the domain

4 0

3 years ago

You need to make at least 360 wraps for a party. You can make 9 wraps per minute. How long will it take you to make the number o

saveliy_v [14]

Answer:

Step-by-step explanation:

im not 100% sure, but I think it's 40

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2 years ago

Evaluate the double integral ∬R(2x−y)dA, where R is the region in the first quadrant enclosed by the circle x^2+y^ 2= 4 and the

frez [133]

Answer:

Step-by-step explanation:

We are to integrate the function

$f(x,y) = 2x-y$

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Convert into polar coordinates

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Double integral will become now

$\int\limits^\frac{\pi}{4} _0 \int\limits^2_0 2rcost -rsint dt\\=\int\limits^\frac{\pi}{4} _0 r^2 cost -r^2sint /2 dt\\= r^2 sint - r^2 cost/2$

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Substitute for r and t

4 sin pi/4 -2 cospi/4

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2 years ago

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evablogger [386]

Answer:

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Step-by-step explanation:

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3 years ago