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valkas [14]
3 years ago
7

Which pair shows equivalent expressions?

Mathematics
1 answer:
777dan777 [17]3 years ago
5 0

Answer:

3(x + 2) = 3x + 6

Step-by-step explanation:

3(x + 2) = 3x + 6

Distribute --> 3x + 6 = 3x + 6

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Find AC and BC. <br><br> Answers: <br> 14.94<br> 13.46<br> 11.10<br> 10<br> Please help.
anzhelika [568]

Step-by-step explanation:

Use Sine rule.

\frac{ac}{ \sin(b) }  =  \frac{ab}{ \sin(c) }  \\  \frac{ac}{ \sin(90) } =  \frac{10}{ \sin(42) }   \\  ac \sin(42)  = 10 \sin(90)  \\ ac =  \frac{10 \sin(90) }{ \sin(42) }  \\  ac = 14.9 \: units \: (3s.f)

Angle A + angle B + angle C = 180 (sum of angles in triangle)

Angle A + 90 + 42 = 180

Angle A + 132 = 180

Angle A = 180 - 132

= 48

\frac{bc}{ \sin(a) }  =  \frac{ab}{ \sin(c) }  \\  \frac{bc}{ \sin(48) } =  \frac{10}{ \sin(42) }   \\  bc \sin(42)  = 10 \sin(48)  \\ bc =  \frac{10 \sin(48) }{ \sin(42) }  \\  = 11.1units (3sf)

3 0
3 years ago
A computer downloaded 20 kilobytes of data in 4 seconds. If it downloads data at a constant speed, it can download ______ kiloby
ohaa [14]
Hello,

let's say v the speed of transmission
v=20kB/4s=5 kB/s

Data downloaded =v*t=5kB/s*15s= 75 kB*s/s= 75 kB.
7 0
3 years ago
Read 2 more answers
X= [-b±√(b²-4ac)] / 2a. find the solve<br><br> if you don't know test yourself
jek_recluse [69]

Answer:

I don't know I'm testing myself now

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Consider the equation 1.5 x plus 4.5 y equals 18.
Otrada [13]
1.5x will be the very answer
6 0
3 years ago
I really need help with this question
Angelina_Jolie [31]
Its 34
Because it shoukd equal 180 so when you do 101+45= 146 then you subtract 180-146= 34
6 0
3 years ago
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