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Leokris [45]
3 years ago
8

Evaluate sec 3pi/2 to the nearest hundredth. The angle is given in radians. 0 1 undefined –1

Mathematics
2 answers:
aev [14]3 years ago
5 0

Answer:

undefined

Step-by-step explanation:

We know that value of cos\dfrac{3\pi}{2}=0

Also, secx=1/cosx

Hence, sec\dfrac{3\pi}{2}=\dfrac{1}{cos\dfrac{3\pi}{2}}

This implies sec\dfrac{3\pi}{2}=\dfrac{1}{0}

i.e.  sec3π/2 is undefined

Sever21 [200]3 years ago
4 0
\cos\dfrac{3\pi}2=0\implies \sec\dfrac{3\pi}2=\dfrac10

but this quantity is undefined.
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Irina-Kira [14]

Answer:

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Hope this helped. :)

4 0
2 years ago
Multiply (2.0 ⋅ 10−4) ⋅ (3.1 ⋅ 10−20). Express the answer in scientific notation. The options are:
Mkey [24]
(2.0×10^-4)×(3.1×10^-20)
=(2.0×3.1)×(10^4×10^-20)
=6.2×10^(-4+(-20))
=6.2×10^-24. Hope it help!
3 0
2 years ago
Solve by using elimination. Express your answer as an Ordered pair (-x +2y=3 3x-2y=7
MAVERICK [17]

Answer:

(5,4)

Step-by-step explanation:

-x+2y=3

3x-2y=7

Add the like terms( 2y and -2y)(-x and 3x)(3 and 7) together. Do this vertically. 2y and -2y cancel eachother out.

  • 2x=10

Divide both sides by 2

  • <u>x=5</u>

To find y, substitute x in for y in one of the equations

  • -5+2y=3

add 5 to both sides

  • 2y=8

Divide both sides by 2

  • <u>y=4</u>

Check:

  • -5+2(4)=3
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4 0
2 years ago
A bat and a ball cost $1.10. The bat costs one dollar more than the ball. How much does the ball cost? Correct Answer Gets Brain
KatRina [158]

Answer:

0.10

Step-by-step explanation:

If together the ball and bat cost $1.10 and the bat cost one more dollar than the ball than you would have too subtract $1 from what the ball and bat together. so 0.10 would be left

8 0
2 years ago
Read 2 more answers
Mrs. Williams is deciding between two field trips for her class. The Science Center charges $135 plus $3 per student. The Dino D
Marianna [84]
Set it up like a regular equation. I used:
3x+135 \ \textless \  6x

As you can see, however, I inserted the "less than" symbol rather than the equal sign because values greater than a certain value can also equal "x". Solve it like a normal equation and you will arrive at:
<u>
</u>x \ \textgreater \  45

This means that, as long as x is greater than 45, "6x" will be greater than "3x+135". Thus, if you bring 46 students, the Science Center will cost less.
5 0
3 years ago
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