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3 years ago

Simplify your answer as much as possible. 3/x-4/7

Mathematics

1 answer:

Natasha2012 [34]3 years ago

5 0

Answer:

That is ur answer. I was unable to type that so I use took a screenshooton my phone .

Step-by-step explanation:

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Multiply <br><br> 3x ( x + 2y)

11Alexandr11 [23.1K]

Answer:

3x^2 + 6x

Step-by-step explanation:

Just distribute

3x(x + 2)

3x(x) = 3x^2

3x(2) = 6x

3x^2 + 6x

4 0

2 years ago

How do I work out 2/3 of 2

german

Its quite simple.

2/3 of 2 is 2* 2/3
= 2*2/3
= 4/3 = 1 1/3 OR 1.33

6 0

3 years ago

Chapter 7, Section 7.2, Question P9 The process for manufacturing a ball bearing results in weights that have an approximately n

bogdanovich [222]

a. Let $X$ be a random variable representing the weight of a ball bearing selected at random. We're told that $X\sim\mathcal N(0.15,0.005^2)$ , so

$\mathrm P(X$

where $Z\sim\mathcal N(0,1)$ . This probability is approximately

$\mathrm P(Z$

b. Let $X_i$ be a random variable representing the weight of the $i$ -th ball that is selected, and let $Y$ be the mean of these 4 weights,

$Y=\dfrac{X_1+X_2+X_3+X_4}4$

The sum of normally distributed random variables is a random variable that also follows a normal distribution,

$X_1+X_2+X_3+X_4\sim\mathcal N(4\cdot0.15,4\cdot0.005^2)$

so that

$Y\sim\mathcal N(0.15,0.005^2)$

Then

$\mathrm P(Y$

c. Same as (b).

8 0

3 years ago

What is the angle of B

Charra [1.4K]

Y-9 + y/2 = 180
Add nine to each side
y+y/2=189
Multiply each side by two
2y+y=378
Add the y's together
3y=378
Divide it all by three
y=126

so, Angle B is 126 degrees

I hope that helps!

5 0

3 years ago

Which phrase describes the variable expression z+ 8?

a_sh-v [17]

9514 1404 393

Answer:

A. z increased by 8

Step-by-step explanation:

When a positive value is added, the original value (z) is <em>increased</em>.

z + 8 ⇔ z increased by 8

5 0

2 years ago