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3 years ago

3(x-2)+2(4x-1) is my question plz answer quick

Mathematics

1 answer:

aleksklad [387]3 years ago

7 0

Answer:

11x - 8

General Formulas and Concepts:

Pre-Algebra

Distributive Properties

Algebra I

Combining Like Terms

Step-by-step explanation:

Step 1: Define expression

3(x - 2) + 2(4x - 1)

Step 2: Simplify

Distribute: 3x - 6 + 8x - 2
Combine like terms (x): 11x - 6 - 2
Combine like terms (Z): 11x - 8

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4 years ago

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H(x)=2x-4 g(x) = x² - 2 Find (h•g)(x)

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Step-by-step explanation:

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3 years ago

The heights of a certain population of corn plants follow a normal distribution with mean 145 cm and stan- dard deviation 22 cm

Firdavs [7]

Answer with explanation:

Given : The heights of a certain population of corn plants follow a normal distribution with mean $\mu=145\ cm$ and standard deviation $\sigma=22\ cm$

a) Using formula $z=\dfrac{x-\mu}{\sigma}$ , the z-value corresponds to x= 135 will be

$z=\dfrac{135-145}{22}\approx-0.45$

At x= 155, $z=\dfrac{155-145}{22}\approx0.45$

The probability that plants are between 135 and 155 cm tall :-

$P(-0.45$

Hence, 34.73% of the plants are between 135 and 155 cm tall.

b) Sample size : n= 16

Using formula $z=\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}$ , the z-value corresponds to x= 135 will be

$z=\dfrac{135-145}{22}{\sqrt{16}}\approx-1.82$

At x= 155, $z=\dfrac{155-145}{22}{\sqrt{16}}\approx1.82$

The probability that plants are between 135 and 155 cm tall :-

$P(-1.82$

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4 0

4 years ago

Which expressions are equal to

Olegator [25]

2(3b-c)
6b-2c
This is the same as...
-2c+6b (switched around)
2(-c+3b) ->-2c+6b
2(3b)-2c-> 6b-2c
Hope this helps!

8 0

4 years ago