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stiv31 [10]
3 years ago
10

Please help me! It’s due soon!

Mathematics
1 answer:
Sever21 [200]3 years ago
3 0

Answer:

0.502.

Step-by-step explanation:

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Which of these steps will eliminate a variable in this system <br> 3x-3y=6 <br> 6x+9y=3
Brrunno [24]

Answer:

A

Step-by-step explanation:

This is because when you do a the answer states, multipliying the top by 2, makes the top equation 6x-6y=12. When you subtract the second from the first you get:

 6x - 6y = 12

- 6x + (-)9y = (-)3

Which results in -15y = 9.

This results in an eliminated variable from the start of the system of equation.

4 0
3 years ago
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Select the functions that have a value of 0.
Sphinxa [80]

Answer:

<h2>cos90° = 0°, tan0° = 0°,</h2><h2>cos(-90°) = 0°, cot270° = 0°</h2>

Step-by-step explanation:

k\in\mathbb{Z}\\\\\sin x=0\iff x=180^ok\\\\\cos x=0\iff x=90^o+180^ok\\\\\tan x=0\iff x=180^ok\\\\\cot x=0\iff x=90^o+180^ok\\\\\csc x\neq0\ \text{for}\ x\in\mathbb{R}-\{180^ok\}\\========================\\\\\sin270^o\neq0\\\\\cos90^o=\cos(90^o+180^o\cdot0)=0\\\\\tan0^o=\tan(180^o\cdot0)=0\\\\\csc(-180^o)\neq0\\\\\cos(-90^o)=\cos(90^o-180^o)=\cos(90^o+180^o\cdot(-1))=0\\\\\cot270^o=\cot(90^o+180^o)=0

3 0
3 years ago
John works as a carpenterfor a small construction company earning $13.50per hour. in the busy season. he works 50 hours per week
mylen [45]
A) $675
b) $202.50

Multiply $13.50 by the total number hours worked each week during each season 
7 0
3 years ago
Lila is a track and field athlete. She has to complete four laps around the track, which is 400 meters. The race took her 6 minu
nlexa [21]
The answer is A. 
Speed = distance / time
Speed = (4*400) / (6*60)    (6*60 to turn minutes to seconds)
Speed = 1600 / 360
Speed = 4.44

Velocity = displacement / time
since she is running in a circle, she stops where she started making he displacement 0
Velocity = 0 / 6*60
Velocity = 0


3 0
3 years ago
Read 2 more answers
What happens if you divide both numerator and the denominator in 2/8 by 2
vivado [14]

Answer:

you will get 1/4

Step-by-step explanation:

2/2=1 and 8/2=4

7 0
3 years ago
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