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vaieri [72.5K]
3 years ago
12

PLEZ HELP! What is the product of 1 1/2 and −1 1/4?

Mathematics
1 answer:
Bogdan [553]3 years ago
3 0
3/2 and -5/4
is the answers you are looking for if the question is not saying 11/2 and -11/4
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Standard deviation of a normal data distribution is a _______. Group of answer choices
FrozenT [24]

Answer:

Standard deviation of a normal data distribution is a measure of data dispersion.

Step-by-step explanation:

Standard deviation is used to measure dispersion which is present around the mean data.

The value of standard deviation will never be negative.

The greater the spread, the greater the standard deviation.

Steps-

1. At first, the mean value should be discovered.

2.Then find out the square of it's distance to mean value.

3.Then total the values

4.Then divide the number of data point.

5.the square root have to be taken.

Formula-

SD=\sqrt{\frac{(\sum{x-x)^2}  }{n-1}

   Advantage-

It is used to measure dispersion when mean is used as measure of central tendency.

5 0
3 years ago
What is the value of x which proves that the runways are parallel? What is the measure of the larger angle?
makkiz [27]

Answer:

118°

Step-by-step explanation:

When two parallel lines are cut by a tranversal, then the exterior angles are supplimentary and the corresponding angles are congruent.

Therefore the angle above (15x - 17)° is also (5x + 17)° and the angle below (5x + 17)° is also (15x - 17)°.

Angles on a straight line adds up to 180°. So to know the measure of the larger angle we must both equations and equal it to 180° to find x in order to know the larger angle.

(5x + 17) + (15x - 17) = 180

5x + 15x + 17 - 17 = 180

20x = 180

20x/20 = 180/20

x = 9°

Nkw let's substitute x = 9 into the equations

5x + 17 =

5(9) + 17 =

= 62°

15x - 17 =

15(9) - 17 =

= 118°

Both equations should add up to be 180°.

Therefore the measure of the largest angle is 118°.

6 0
2 years ago
Factorise :x^2y^2-16​
Lyrx [107]

Answer:

(xy - 4)(xy + 4).

Step-by-step explanation:

The is the difference of 2 squares.  

a^2 - b^2 = (a - b)(a + b: so we have:

x^2y^2 - 16​ = (xy - 4)(xy + 4)

5 0
3 years ago
Common factors of 8xy⁴,6x²y,10x²y²​
Citrus2011 [14]

Answer:

2^{3}×5×3×x^{2}×y^{4}

Step-by-step explanation:

8xy^{4}= 2^{3}×x×y^{4}

6x^{2} y= 2×3×x^{2}×y^{}

10x^{2} y^{2} = 2×5×x^{2}×y^{2}

2^{3}×5×3×x^{2}×y^{4}

4 0
2 years ago
The terminal side of an angle in standard position passes through P(–3, –4). What is the value of tan 0?
Murrr4er [49]

Answer:

tan(θ) = 4/3

Step-by-step explanation:

The tangent is the ratio of the y-coordinate to the x-coordinate:

... tan(θ) = (-4)/(-3) = 4/3

6 0
2 years ago
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