3 years ago

Who is good at geometry that can help me?

Mathematics

1 answer:

joja [24]3 years ago

5 0

Answer:

Step-by-step explanation:

B and D have to be supplementary otherwise it wouldn't be a parallelogram

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What is 5(2x - 2y) - (4x + 3y)

EastWind [94]

Answer:

6x - 13y

Step-by-step explanation:

5(2x - 2y) - (4x + 3y)

10x - 10y - 4x - 3y

10x - 4x - 10y - 3y

6x - 13y

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3 years ago

What is the solution?<br><br> 2x+y=-3

OLEGan [10]

2x+y+3=0
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3 years ago

Simplify this expression: cos t(sec t − cos t)

Nostrana [21]

$\cos t \, (\sec t - \cos t)$
$= \cos t \, (\frac{1}{\cos t} - \cos t)$
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4 years ago

Read 2 more answers

Help me with this plz, I ain’t good at math at all.

Ad libitum [116K]

I’ll be happy to help!
Since a right angle is equal to 90 degrees, we can add the 67+90 which equals 157, so since a triangle is equal to 180, we can subtract 180-157.
180-157= 23
The answer for x is 23!

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3 years ago

Please i have 15 minutes

TEA [102]

Answer:

$x = \dfrac{-\log 7}{\log 7 - \log 2}$

Step-by-step explanation:

$2^x = 7^{x + 1}$

Take the log of both sides.

$\log 2^x = \log 7^{x + 1}$

Use properties of log.

$x \log 2 = (x + 1) \log 7$

$x \log 2 = x \log 7 + \log 7$

$x \log 2 - x \log 7 = \log 7$

$x(\log 2 - \log 7) = \log 7$

$x = \dfrac{\log 7}{\log 2 - \log 7}$

$x = \dfrac{\log 7}{-(\log 7 - \log 2)}$

$x = \dfrac{-\log 7}{\log 7 - \log 2}$

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3 years ago