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Troyanec [42]
3 years ago
14

Plz write all the steps

Mathematics
1 answer:
SVETLANKA909090 [29]3 years ago
7 0

Answer:

Step-by-step explanation:

See attachment

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If y = kx, what is the value of k if y = 20 and x = 0.4? A) 5 B) 8 C) 9.6 D) 50
Margaret [11]
Answer: D, 50
y = kx          <span>y = 20 and x = 0.4
</span>
What you will do: You will plug in your y and your x.
Your equation should look like: 20=k(0.4)
Next: What you will do is divide each side of your equal sign by 0.4 so you will get your k alone.
You would get: k=50

HOPE THIS HELPS! ^_^
  
7 0
3 years ago
A negative number plus a positive number is a negative number.
ipn [44]

Answer:

Sometimes

Step-by-step explanation:

Examples:

-5 + 10 = 5   FALSE

-10 + 5 = -5  TRUE

7 0
3 years ago
Read 2 more answers
Helppp I just need it to be explained. #7
IceJOKER [234]
#7 is the easiest one.

a + bi = -9 + 4i

see the expression on either side matches up so..
 a = -9 and b = 4
5 0
3 years ago
HURRY PLEASE!!! 10 MINUTES!!!!!!!!!!
Readme [11.4K]

Answer:

I think it is D

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
HELP ASAP TIMED!!!!!!!!!!!!!!!
rodikova [14]

Answer:

x = 12.3

y = 15.9

Step-by-step explanation:

Apply trigonometric ratio to find x and Reference angle = 51°

Opposite side length = x

Adjacent side length = 10

Hypotensive length = y

✔️To find x, apply TOA:

Tan 51° = Opp/Adj

Tan 51° = x/10

x = Tan 51° × 10

x = 12.3 (nearest tenth)

✔️To find y, apply CAH:

Cos 51° = Adj/Hyp

Cos 51° = 10/y

y × Cos 51° = 10

Divide both sides by Cos 51

y = 10/Cos 51

y = 15.9 (nearest tenth)

3 0
3 years ago
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