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lubasha [3.4K]
3 years ago
8

True or False?The ratios 4/5 and 52/60 are proportional​

Mathematics
2 answers:
ZanzabumX [31]3 years ago
4 0

Answer:

False

Step-by-step explanation:

baherus [9]3 years ago
3 0

Answer:

False.

Step-by-step explanation:

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Can someone explain to me how to do this
Otrada [13]
Angles on a straight line add up to 180°, so:

x + 60 = 180

x = 180 - 60

x = 120°
3 0
3 years ago
Read 2 more answers
<img src="https://tex.z-dn.net/?f=%20-%203%20%2B%205i%20%20%5Cdiv%20%20-%203%20-%204i" id="TexFormula1" title=" - 3 + 5i \div
Likurg_2 [28]

Answer:

\frac{-11}{25}+\frac{-27}{25}i given you are asked to simplify

\frac{-3+5i}{-3-4i}

Step-by-step explanation:

You have to multiply the numerator and denominator by the denominator's conjugate.

The conjugate of a+bi is a-bi.

When you multiply conjugates, you just have to multiply first and last.

(a+bi)(a-bi)

a^2-abi+abi-b^2i^2

a^2+0         -b^2(-1)

a^2+-b^2(-1)

a^2+b^2

See no need to use the whole foil method; the middle terms cancel.

So we are multiplying top and bottom of your fraction by (-3+4i):

\frac{-3+5i}{-3-4i} \cdot \frac{-3+4i}{-3+4i}=\frac{(-3+5i)(-3-4i)}{(-3-4i)(-3+4i)}

So you will have to use the complete foil method for the numerator. Let's do that:

(-3+5i)(-3+4i)

First: (-3)(-3)=9

Outer::  (-3)(4i)=-12i

Inner: (5i)(-3)=-15i

Last: (5i)(4i)=20i^2=20(-1)=-20

--------------------------------------------Combine like terms:

9-20-12i-15i

Simplify:

-11-27i

Now the bottom (-3-4i)(-3+4i):

F(OI)L (we are skipping OI)

First:-3(-3)=9

Last: -4i(4i)=-16i^2=-16(-1)=16

---------------------------------------------Combine like terms:

9+16=25

So our answer is \frac{-11-27i}{25}{/tex] unless you want to seprate the fraction too:[tex]\frac{-11}{25}+\frac{-27}{25}i

6 0
3 years ago
Pls help me with question 3
kow [346]
No. I can’t. Just wanting to get some points man, 5 would be nice.
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3 years ago
If the distance between the crest and the trough of a wave is 1.2 m, the wave's amplitude is
padilas [110]
<span>If the distance between the crest and trough of a wave is 1.2 meters the waves amplitude would be 0.6 m. 

Thank you for posting your question here. I hope the answer will help you. 

Feel free to ask more questions here at brainly. </span>
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3 years ago
Given: tangent to Circle O.<br><br> If m C = 63°, then m BDR =
OverLord2011 [107]

Answer:

yan po

Step-by-step explanation:

hope it help

brainliest pls

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2 years ago
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