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2 years ago

7

7.4x-y=-252,12.1x-y=-231

1 answer:

densk [106]2 years ago

3 0

Answer:

(x,y) = (0,231)

Step-by-step explanation:

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52 -46<br> Plz answer my question

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the answer for this problem is 6

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3 years ago

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How do you write the equation in slope-intercept form of the line that has a slope of 2 and contains the point (1,1)

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First you have to put it into point-slope form before you can write it in slope-intercept form which is y-y1=m(x-x1)

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3 years ago

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Evaluate the expression. 5^2−4⋅6+11 Enter your answer in the box.

mart [117]

Explanation:

This question's it's about the order of operations. P-parenthesis, E-exponents, M-multiply, D-divide, A-add, and S-subtract. It can also go left to right.

Do exponents first.

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$25-4*6+11$

Then, multiply left to right.

$4*6=24$

$25-24+11$

And add/subtract left to right.

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Hope this helps!

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2 years ago

For which value of theta is cot (theta) undefined?

sattari [20]

The cotangent function is defined as the ratio between cosine and sine of a given angle, i.e.

$\cot(x) = \frac{\cos(x)}{\sin(x)}$

Since you can't have zero at the denominator, the cotangent function is not defined when the sine is zero.

Let's look at your option:

$\sin(90^\circ) = 1$ , so the cotangent is defined here

$\sin(180^\circ) = 0$ , so the cotangent is not defined here

$\sin(270^\circ) = -1$ , so the cotangent is defined here

$\sin(450^\circ) = \sin(360^\circ+90^\circ)=\sin(90^\circ) = 1$ , so the cotangent is defined here

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3 years ago

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