3 years ago

1^5+3-(2×3^2)÷20÷4+2

Mathematics

1 answer:

vlabodo [156]3 years ago

4 0

Answer:

5.775

Step-by-step explanation:

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PLZ HELP!!! I HAVE AN EXAM!! Find cscΘ if sinΘ=<img src="https://tex.z-dn.net/?f=%5Cfrac%7B-2%7D%7B7%7D" id="TexFormula1" title=

Allisa [31]

$\boxed{\bold{\red{csc\theta=-\frac{7}{2}}}}$

$\large{\red{Solution\: given:}}$

$Sin\theta=\frac{-2}{7}$

we have

$cosec \theta=\frac{1}{Sin\theta} =\frac{1}{\frac{-2}{7}}\\=-\frac{7}{2}$

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3 years ago

9. Solve for x: 2x – y = (3/4)x + 6.

AlekseyPX

Answer:

x = 4(y + 6)/5

Step-by-step explanation:

2x - y = (3/4)x + 6

2x - (3/4)x = y + 6

(8x - 3x)/4 = y + 6

5x/4 = y + 6

5x = 4(y + 6)

5x = 4y + 24

x = (4y + 24)/5

Therefore, x = 4(y + 6)/5

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4 years ago

Find the number that makes 4:12 equivalent to 28:__.

guapka [62]

Answer:

Step-by-step explanation:

We can set up a proportion using fractions.

$\frac{4}{12} = \frac{28}{x}$

Now, let's cross multiply by multiplying 12 and 28 then dividing by 4.

$12\cdot28=336\\\\336\div4=84$

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3 years ago

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Paul [167]

Answer:

x = - 7

Step-by-step explanation:

( x + 139 ) and 132 are vertically opposite angles.

Vertically opposite angles are equal,

x + 139 = 132

x = 132 - 139

x = - 7

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