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natta225 [31]
3 years ago
13

Write a system of equations and solve.

Mathematics
1 answer:
Scrat [10]3 years ago
7 0
This looks a lot like a problem previously posted and already worked.
brainly.com/question/8829608
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Help! Given that tanθ=-1, what is the value of secθ, for 3π/2<θ<2π?
user100 [1]

Answer:  Choice B)  \sqrt{2}

Work Shown:

\sec^2(\theta) = \tan^2(\theta) + 1\\\\\sec^2(\theta) = (\tan(\theta))^2 + 1\\\\\sec^2(\theta) = (-1)^2 + 1\\\\\sec^2(\theta) = 2\\\\\sec(\theta) = \sqrt{2}\\\\

Note: secant is positive in quadrant Q4, when theta is between 3pi/2 radians and 2pi radians (270 degrees and 360 degrees). So that's why we don't consider the minus form of the plus minus.

5 0
3 years ago
4.2(5.1x+6.8) Simplify the expression
vovikov84 [41]

Answer:

21.42x+28.56

Step-by-step explanation:

Expand: 4.2×5.1×x+4.2×6.8

4.2×5.1×x  to (21.42)x

Simplify: 21.42x+4.2×6.8

4.2×6.8 = 28.5628.56

21.42x+28.56

6 0
3 years ago
PLEASE HELP <br> Options for B= <br> 30<br> Banks height <br> F= <br> 30 <br> Firehouse's height
Leno4ka [110]

Answer:

Step-by-step explanation:

Fire house Light = 90

30=30-90

7 0
3 years ago
Can anyone help me plz and I need the person to explain it for me
lions [1.4K]

Answer:

1 cm = 100 mi

28.9/1=28.9

28.9 x 100 = 2890 miles distance

2890 / 65 miles per hour = 44.4615 hours to drive

44.461/24 hours in a day = 1.85 rounded up is 2 days

About two days

If you have any questions you can ask

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Please help me! graph y=3/4x-1/2
andreev551 [17]

Use the site called Desmos, it's a graphing calculator and should help you in all the ways you need. It isn't complex. Just put that equation in a box and it graphs it for you.

4 0
3 years ago
Read 2 more answers
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