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maks197457 [2]
3 years ago
5

Which of the following expressions is equal to -1? sec90° sin180° csc270°

Mathematics
1 answer:
ahrayia [7]3 years ago
6 0

Answer:

csc 270° is the answer.

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choli [55]

Answer:

what?

Step-by-step explanation:

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3 years ago
Uniform circular motion is used in physics to describe the motion of an object traveling at a constant speed in a circle. The sp
Ivanshal [37]

Answer:

  B)  T = 2πr/v

Step-by-step explanation:

To solve the given equation for T, multiply it by T/v.

v=\dfrac{2\pi r}{T}\\\\v\dfrac{T}{v}=\dfrac{2\pi r}{T}\cdot\dfrac{T}{v}\\\\T=\dfrac{2\pi r}{v} \qquad\text{simplify}

6 0
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If you multiply the four-digit number abcd by 4, the order of digits will be reversed. That is, abcd x 4=dcba. The digits a, b,
Arisa [49]
The given is that A B C D <span>x 4 = D C B A
</span><span>
Possible values of A are 1 or 2. It can't be 1 since the </span><span> </span><span>final result A is in unit place and 1 is not possible when we multiply any number by 4
</span><span>
2 B C D x </span><span>4 = </span><span>D C B 2</span>
It is clear above, that D = 8
2 B C 8 x <span>4 = </span><span>8 C B 2</span>
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We try B=1

2 1 C 8 x <span>4 = </span><span>8 C 1 2

</span>To find for C, you can use the equation:

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Therefore,

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5 0
3 years ago
Read 2 more answers
Simply the following expression: 8x + 5y - 4z + 9y - 3x + 13z
oksian1 [2.3K]

Answer:

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Step-by-step explanation:

combine 8x and -3x to get 5x

combine 5y and 9y to get 13y

combine -4z and 13z to get 9z

7 0
2 years ago
Write an equation that passes through the points (3, 6) and (1,-1)
Marina CMI [18]
Finding gradient:

m = y2 - y1
x2 - x1

= -1 - 6
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= -7 / (-2)
= 7/2

y = m(x - x1) + y1
y = 7(x - 3) + 6
2
2y = 7x - 21 + 12
2y = 7x - 9
7 0
2 years ago
Read 2 more answers
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