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lisabon 2012 [21]
3 years ago
9

Given the labeled diagram at the left. Find X.

Mathematics
1 answer:
d1i1m1o1n [39]3 years ago
6 0

Answer:

x = 55°

Step-by-step explanation:

Measure of central angle is equal to the measure of the corresponding minor arc

Therefore, m(central angle) = 70°

Since, radii of same circle are equal

Therefore, measure of the angles opposite to them are also equal.

So, by interior angle sum postulate of a triangle:

x + x + 70° = 180°

2x = 180° - 70°

2x = 110°

x = 110°/2

x = 55°

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2(3x” – 2)-(4x? - 4x)<br><br> What is this simplified to?
tester [92]

Answer:

6x-4

Step-by-step explanation:

Let's simplify step-by-step.

2(3x−2)−(4x−4x)

Distribute the Negative Sign:

=2(3x−2)+−1(4x−4x)

=2(3x−2)+−1(4x)+−1(−4x)

=2(3x−2)+−4x+4x

Distribute:

=(2)(3x)+(2)(−2)+−4x+4x

=6x+−4+−4x+4x

Combine Like Terms:

=6x+−4+−4x+4x

=(6x+−4x+4x)+(−4)

=6x+−4

Answer:

=6x−4

4 0
3 years ago
A Pearson correlation (symbolized by the letter r) is normally used to summarize the association, or correlation, between two va
avanturin [10]

Answer:

False

Step-by-step explanation:

We are given the following in the question:

Pearson correlation = 1.30

Pearson coefficient:

  • The range of Pearson coefficient is from [-1,1]
  • A positive correlation means that an increase in one quantity leads to an increase in another quantity
  • A negative correlation means with increase in one quantity the other quantity decreases.
  • +1 tells about a a perfect positive linear relationship and −1 indicates a perfect negative linear relationship.

Since, the given coefficient of Pearson does not lies in the range, it cannot express relation between two quantities.

Thus, a value of 1.30 does not indicates a strong correlation.

Thus, the given statement is false.

5 0
3 years ago
HURRYYYYY<br> What is the value of the expression 4’4?
WINSTONCH [101]

Answer:

256

Step-by-step explanation:

Raise 4 to the power of 4

Basically, multiply 4 by itself four times. :)

4 0
3 years ago
Factorise x squared+3x-4
Anon25 [30]

Answer:

(x - 1) (x + 4)

Step-by-step explanation:

x²+3x-4 = (x - 1) (x + 4)

5 0
3 years ago
A grasshopper has a length of (5x - 2) inches. A spider has a length of (2x - 1) inches. How much longer is the grasshopper?
KonstantinChe [14]

Answer:

The grasshopper is 3x-1 longer.

(5x-2)-(2x-1)=5x-2-2x+1=3x-1

6 0
3 years ago
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