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4 years ago

Help With Number 9 Please!!!

Mathematics

1 answer:

marysya [2.9K]4 years ago

3 0

No, this statement would only be true if we found the product of numbers like: 9999 and 5, this would obviously make a 5-digit number. However, with numbers like 4449 and 1, we get a 4-digit number, thus leading us with the idea of it not being a correct and valid statement.

Hope this helps.

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What is the slope that goes through (6,-7),(-5,-2)

agasfer [191]

Slop=(y2-y1)/(x2-x1)
Slop=(-2-(-7))/(-5-6)
Slop=-5/11

7 0

3 years ago

Read 2 more answers

The burning time of a very large candle is normally distributed with mean of 2500 hours and standard deviation of 20 hours. Find

dezoksy [38]

Answer: C.-1.5

Step-by-step explanation:

Given: The burning time of a very large candle is normally distributed with mean $(\mu)$ of 2500 hours and standard deviation $(\sigma)$ of 20 hours.

Let X be a random variable that represent the burning time of a very large candle.

Formula: $Z=\dfrac{X-\mu}{\sigma}$

For X = 2470

$Z=\dfrac{2470-2500}{20}\\\\\Rightarrow\ Z=\dfrac{-30}{20}\\\\\Rightarrow\ Z=\dfrac{-3}{2}\\\\\Rightarrow\ Z=-1.5$

So, the z-score they corresponds to a lifespan of 2470 hours. =-1.5

Hence, the correct option is C.-1.5.

7 0

3 years ago

A figure was created using a tangle and a semicide. Use the ruler provided to measure the

Natali5045456 [20]

And I’m sorry I don’t think you

4 0

3 years ago

Express each number in scientific notitatio 43,000= 0.0072= 0.0000901=

Maksim231197 [3]

Answer:

43,000: 4.3×10^4

0.0072: 7.2×10^-3

0.0000901: 9.01×10^-5

Step-by-step explanation:

scientific notation: a×10^b, where should be 0<a<10

Step 1. Count the zeros

Step 2. Look at the number left, and determine whether or not it fits in the range of [a]. If not, we divide or multiply 10 to get it fit

------------------------

43,000: 4.3×10^4 (since 43 does not fit, we divide by 10 to get it fit)

0.0072: 7.2×10^-3 (since 0.72 does not fit, we multiply 10 to get it fit)

0.0000901: 9.01×10^-5 (since 0.901 does not fit, we multiply 10 to get it fit)

Hope this helps!! :)

Please let me know if you have any question

7 0

3 years ago

8x - 4y = -12 solve for y

son4ous [18]

Solving an equation means finding a value of a variable that make the equation true. This value is called the solution of the equation. A mathematical equation is just like a balanced equation. Both sides of the equation should be equal at all times. Whatever we do to one side, has to be done on the opposite side.

$8x - 4y = -12$

$4(2x-y)=-12

 
$ $Factor \ out \ the \ common \ term \ 4$

$2x-y=- \dfrac{12}{4}$ $Divide \ both \ sides \ by \ 4$

$2x-y=-3

 

$

$-y=-3-2x$ $Subtract \ 2x \ from \ both \ sides$

$y=3+2x$ $Multiply \ both \ sides \ by \ -1$

4 0

4 years ago