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3 years ago

Compute 3 + (1-2(3-5))

Mathematics

1 answer:

soldier1979 [14.2K]3 years ago

4 0

3+(1-2(3-5))
3+(1-6+10)
3+(1-16)
3+(-15)
-12

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Are the two triangles below similar? Triangles GHI and JKL are shown. Angle G equals 46 degrees, Angle I equals 27 degrees, Angl

Scilla [17]

Answer: No; they do not have proportional corresponding sides

Step-by-step explanation:

Since, here in triangles GHI and JKL,

∠ G = 46°, ∠I = 27° ⇒ ∠H = 107° , ∠L = 27°, ∠ K = 108°⇒∠J = 45°

GH = 4, HI = 5 , KJ= 2 and JL = 4

Here ∠I ≅ ∠L

But, $\frac{GH}{JK} \neq \frac{HI}{JL}$

Therefore, they do not have proportional corresponding sides.

That is why they are not similar to each other.

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3 years ago

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The smaller the standard deviation, _______________________. Select one: a. the less variability it has b. the more variability

algol13

Answer:

a. the less variability it has

Step-by-step explanation:

The standard deviation is a measure of the amount of variation or dispersion of a set of values.

When your standard deviation is big your data is more dispersed.

When your standar deviation is small your mean is a representative index of your data, and there is less variability.

If there was no dispersion of the data (if all your data be the same) then the standard deviation will be 0.

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3 years ago

What is 32 divided by 5

kifflom [539]

Answer:

A resposta é 6,4

Step-by-step explanation:

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3 years ago

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Help solve these algebraic fractions please with explanation would be great <3

sineoko [7]

Answer:

7/ Ans;

$\frac{x + 2}{ x + 4} \div \frac{ {x }^{2} - 2x - 8}{ {x}^{2} + 2x - 8} \\ \\ \\ \frac{x + 2}{x + 4} \times \frac{ {x}^{2} + 2x - 8 }{ {x}^{2} - 2x - 8} \\ \\ \\ \frac{x + 2}{x + 4} \times \frac{(x - 2)(x + 4)}{(x - 4)(x + 2)} \\ \\ \\ =1 \times \frac{x - 2}{x - 4} \\ \\ \\ = \frac{x - 2}{x - 4}$

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9/Ans;

$\frac{ {x}^{2} - 9}{ {x}^{2} - 6x + 9} \div \frac{x + 4}{x - 3} \\ \\ \frac{ {x}^{2} - 9 }{ {x}^{2} - 6x + 9} \times \frac{x - 3}{x + 4} \\ \\ \\ \frac{(x + 3)(x - 3)}{(x - 3)(x - 3)} \times \frac{x - 3}{x + 4} \\ \\ \\ = \frac{(x + 3)}{1} \times \frac{1}{(x + 4)} \\ \\ \\ = \frac{x + 3}{x + 4}$

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In the two questions, we first replace the division with multiplication with flipping the fraction after the division sign, secondly we analyze any equation that needs analysis to simplify it, thirdly, to simplify the fraction by deleting the numerator and the similar denominator .

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2 years ago

Help ASAP!!! Please and thank you so much

PilotLPTM [1.2K]

Rectangle on the left = 3 × 4 = 12

Rectangle in the middle = 3 × 2 = 6

Rectangle on the right = 4 × 3 = 12

Add:

12 + 6 + 12 = 30

Answer = 30

Hope this helped☺☺

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3 years ago

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