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2 years ago

Help me explain how to do this if you can

Mathematics

2 answers:

Nostrana [21]2 years ago

5 0

Answer:

Angle × = 23°

Step-by-step explanation:

All angles of a triangle are always equal to 180°.

So, we got the measurements of two angles already.

One is 67° and the other is 90° (right angle).

So, (67 + 90) + Angle × = 180°

157 + Angle × = 180°

Transpose 157 to the side if 180°.

Angle × = 180 - 157

Angle × = 23°

Hope it helps!

Aliun [14]2 years ago

4 0

Answer is 23 degrees

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Please help. I don’t understand this math problem.

Jobisdone [24]

Answer:

(7) The value of -j is 9.

(8) The value of -(-j) is -9.

(9) The value of (-j)(-j) is 81.

Step-by-step explanation :

Part 7:

Given algebraic expression is:

j = -9

Now we have to determine the value of (-j).

-j = - (-9) = 9

The value of -j is 9.

Part 8:

Given algebraic expression is:

j = -9

Now we have to determine the value of -(-j).

- (-j) = - [-(-9)] = -9

The value of -(-j) is -9.

Part 9:

Given algebraic expression is:

j = -9

Now we have to determine the value of (-j)(-j).

(-j)(-j) = [- (-9)] × [- (-9)] = 9 × 9 = 81

The value of (-j)(-j) is 81.

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3 years ago

Please explain how they plugged the removable discontinuity in this question.

kondor19780726 [428]

In the limit

$\displaystyle \lim_{x\to c} f(x)$

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In the given example, $f(x)$ is factorized to reveal a common factor of $x-1$ in the numerator and denominator. We have $x\neq1$ if $x\to1$ , so $x-1\neq0$ so we can simplify

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Then

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2 years ago

Which graph represents the solutions to the inequality |2x − 6| less than or equal to 10?

kakasveta [241]

Answer: Choice A

---------------------------------

Explanation:

The rule I'm going to use is if |x| <= k, then -k <= x <= k
where k is some positive number
The notation <= means "less than or equal to"

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-10 <= 2x-6 <= 10 ... use the rule mentioned above
-10+6 <= 2x-6+6 <= 10+6 ... add 6 to all sides
-4 <= 2x <= 16
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So we'll have a number line with closed circles at -2 and 8. The shaded region is between the closed circles.
This is a shorthand way of saying what choice A is saying. For some reason, your teacher decided to make the wording more clunky.
Saying "shading to the right of -2 and shading to the left of 8" is the same as "shading between -2 and 8"
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Step-by-step explanation:

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Marat540 [252]

Answer:

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3 years ago

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