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zepelin [54]
3 years ago
9

Find x if f(x) = 2x + 7 and f(x) = -1.

Mathematics
2 answers:
Yuri [45]3 years ago
8 0
Ok so i do not know if you mean to solve it?But the answer would be x=-4 if you solve the problem
Sloan [31]3 years ago
6 0
The answer we -9 because 2x-1 is -2 and -2+7= -9
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A machining operation produces bearings with diameters that are normally distributed with mean 3.0005 inches and standard deviat
padilas [110]

Answer:

5%

Step-by-step explanation:

The 68-95-99.7 rule for the Normal distribution is an empirical rule that remind us the percentages of data that falls between the mean ± 1, ± 2 and ± 3 standard deviations.

That is to say, if the mean is m and the standard deviation s, roughly speaking 68% of the data falls between  [m-s, m+s], 95% between [m-2s, m+2s] and 99.7% between [m-3s, m+3s].

Since the mean is 3.0005 and the standard deviation is s=0.0010, 2s=0.0020, 95% of the data should fall between [3.0005-0.0020, 3.0005+0.0020] and 5% outside this interval. So <em>around 5% of total production will be scrap</em>.

 

7 0
4 years ago
What is the answer to this: 2/5 x -4/7
Roman55 [17]
X= 2 1/2 simplify it and you will get 5/2.Hope this helps. :-)
7 0
3 years ago
The Sydney Morning Herald - February 8, 2004 reported that in 1961, the average number of children born to Australian women (3.5
Alborosie

Answer:

<h2>A. Agree, 4 children is the most typical number of children.</h2>

Step-by-step explanation:

By analysis the problem, we can make our  decision by first determining the percent of 3.55 of 4

therefore the percentage can be computed as

=(3.55/4)*100

=0.8875*100

=88.75%

The analysis above it shows that 88.75 percent of the women who give birth to children give birth to 4 children.

This number is very close to a hundred percent hence the statistical claim is  "Agree, 4 children is the most typical number of children."

3 0
3 years ago
S. ATV that usually sells for $176.52 is on sale for 30% off. If sales tax on the TV is 5% we
Grace [21]

Answer:

a

Step-by-step explanation:

7 0
3 years ago
the speed of light is 1.86×10^5 miles per second.how many miles will light travel in 4,200,000 seconds?
stiks02 [169]

Answer: 7.812*10^{11}\ miles

Step-by-step explanation:

Let be "x" the amount of miles light will travel in 4,200,000 seconds.

Rewrite 4,200,000 seconds in Scientific notation. Move the decimal point 6 places to the left. Then:

4,200,000\ seconds=4.2*10^6\ seconds

According to the exercise, light travels 1.86*10^5 miles in 1 second.

Therefore, based on this data, you can set up the following proportion:

\frac{1.86*10^5\ miles}{1\ second}=\frac{x}{4.2*10^6\ seconds}

And finally, you must solve for "x" in order to find its value.

(Remember the Product of powers property: a^m*a^n=a^{mn})

Then:

(4.2*10^6\ seconds)(\frac{1.86*10^5\ miles}{1\ second})=x\\\\x=7.812*10^{11}\ miles

7 0
3 years ago
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