3 years ago

30 POINTS

Mathematics

1 answer:

leonid [27]3 years ago

7 0

Answer:....

What?

Step-by-step explanation:

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What is the solution set of the quadratic inequality 4(x+2)^2<0

bezimeni [28]

$Answer: \\ 4 {(x + 2)}^{2} < 0 \\ \Leftrightarrow ( {x + 2})^{2} < 0 \: which \: is \: wrong \: because \: {(x + 2)}^{2} \geqslant 0 \\ \Rightarrow x \in \emptyset$

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Find sin60 A.1/2 B.2/2 C.3/2

ki77a [65]

Answer: $\frac{\sqrt{3} }{2}$

Step-by-step explanation:

To find sin(60), you need to know the unit circle. Sin(60) is the same as sin(π/3). On the unit circle, sin(π/3) is √3/2. We know this because the coordinates are (cos, sin). Sin is the y coordinate.

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The value of a decimal becomes clearer when the place value is spoken or written as the number it names.

irga5000 [103]

Answer:

The value of a decimal becomes clearer when the place value is spoken or written as the number it names. For example, 0.1 makes more sense if it is read as “one-tenth” rather than “zero point one.”

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Find the value of Q.

Serggg [28]

Answer:

K = 39.5

Step-by-step explanation:

We assume that when all the angles are added together they are equal to 360°, hence:

$k + 3k + 87 + 115 = 360 \\ \\ 4k + 202 = 360 \\ 4k = 360 - 202 \\ 4k = 158 \\$