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Lapatulllka [165]
3 years ago
12

Pls help i dont understand

Mathematics
1 answer:
Alisiya [41]3 years ago
6 0

The formula for the circumference is 2πr.

The diameter d is given, which is 2 times the radius r (d = 2r)

So you have to calculate π d = 3.142×1.8 ≈ 5.7

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A new notebook computer with DVD player cost $808 Derek muller has $969 in his checking account how much will be left in his che
Gre4nikov [31]

Answer: $161

Step-by-step explanation: Subtract $808 from $969

7 0
3 years ago
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The question is in the picture, need help ASAP please !!
scoray [572]

Answer:

A. 17°

Step-by-step explanation:

We know that point r is 73° and point p is a right angle (90°) all triangles equal 180° on the inside. If you add 73 and 90, you get 163. Then subtract 163 from 180 to get 17.

8 0
2 years ago
How do I simplify (tanx/1+secx) + (1+secx/tanx)
Ket [755]
Tan x /(1 +sec x) + (1+sec x) /tan x

Tan x=sin x / cos x
1+ sec x=1 +1/cos x=(cos x+1)/cos x

Therefore:
tan x /(1 +sec x) =(sin x/cos x)/(cos x+1)/cos x=
=(sin x * cos x) / [cos x* (cos x+1)]=sin x /(Cos x+1)

(1+sec x) /tan x=[(cos x+1)/cos x] / (sin x/cos x)=
=[cos x(cos x+1)]/(sin x *cos x)=(cos x+1)/sin x

tan x /(1 +sec x) + (1+sec x) /tan x=
=sin x /(Cos x+1) + (cos x+1)/sin x=
=(sin²x+cos²x+2 cos x+1) / [sin x(cos x+1)]=

Remember: sin²x+cos²x=1⇒ sin²x=1-cos²x

=(1-cos²x+cos²x+2 cos x+1) / [sin x(cos x+1)]=
=2 cos x+2 /  [sin x(cos x+1)]=
=2(cos x+1) /  [sin x(cos x+1)]=
=2 /sin x

Answer : tan x /(1 +sec x) + (1+sec x) /tan x= 2/sin x
8 0
3 years ago
2z - 6 = 2(2 + 2) - 10
Blababa [14]

Answer:

z=2

Step-by-step explanation:

2z-6=2(2+2)-10  Distribute.

2z-6=4+4-10      Combine like terms.

2z-6=-2              Add 6 on both sides.

   <u>+6 +6</u>

2z=4                   Divide by 2 on both sides.

<u>/2 /2</u>

z=2

Hope this helps! Have a great day ^^

6 0
3 years ago
Simplify. 4^3 x 4^4/ 4^9<br><br> A. 4^16<br><br> B. 4^2<br><br> C. 1/4^2<br><br> D 1/4
forsale [732]
The answer is A. 4^16
3 0
3 years ago
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