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lorasvet [3.4K]
3 years ago
8

What is the value of (x)?​

Mathematics
2 answers:
atroni [7]3 years ago
6 0

Answer: -6

Step-by-step explanation: 7 + -6 = 1

:\

lara31 [8.8K]3 years ago
4 0

Answer:

x= -6

Step-by-step explanation:

x+7=1

1-7= - 6

SO , -6+7= 1

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How do you slove 3x+4y=8 in steps
gavmur [86]
<span><span><span>3x</span>+<span>4y</span></span>=8
</span>Add -4y to both sides
<span><span><span><span>3x</span>+<span>4y</span></span>+<span>−<span>4y</span></span></span>=<span>8+<span>−<span>4y</span></span></span></span><span><span>3x</span>=<span><span>−<span>4y</span></span>+8
</span></span>Then you divide both sides by 3
<span><span><span>3x/</span>3</span>=<span><span><span>−<span>4y</span></span>+8/</span>3</span></span><span>x=<span><span><span><span>−4/</span>3</span>y</span>+<span>8/3
</span></span></span>And your answer is ...
<span>x=<span><span><span><span>−4/</span>3</span>y</span>+<span>8/<span>3</span></span></span></span>
7 0
3 years ago
Construct a 99% confidence interval for the population standard deviation of white blood cell count (in cells per microliter). A
kogti [31]

Answer:

The correct option is 1.148 < σ < 6.015

Explanation:

The 99% confidence interval for the standard deviation is given below:

\sqrt{\frac{(n-1)s^{2}}{\chi^{2}_{\frac{0.01}{2} }} }

Where:

\chi^{2}_{\frac{0.01}{2} }=18.548

\chi^{2}_{1-\frac{0.01}{2}}=0.676

Therefore, the 99% confidence interval is:

\sqrt{\frac{(7-1)2.019^{2}}{18.548} }

1.148

Therefore, the option 1.148 < σ < 6.015 is correct

3 0
3 years ago
Enter the enter the first four terms of the sequence defined by the given rule assume that the domain of each function is the se
Gelneren [198K]

Answer:

  {1, -9, 56, -269}

Step-by-step explanation:

Evaluate the rule for n=2, 3, and 4 in sequence.

For n=2

  f(2) = (-5)f(1) +11 = (-5)(4) +11 = -9

  f(3) = (-5)f(2) +11 = (-5)(-9) +11 = 56

  f(4) = (-5)f(3) +11 = (-5)(56) +11 = -269

The first four terms of the sequence are {1, -9, 56, -269}.

3 0
3 years ago
Diego correctly points out that 108 cubes with an edge length of 1/3
pogonyaev

Answer:

Option C) 4 cubic inches is the volume of the rectangular prism.

Step-by-step explanation:

It is given that, 108 cubes with an edge length of 1/3 inch are needed to fill a rectangular prism.

Therefore, the volume of the rectangular prism is equal to the volume of the 108 cubes needed to fill that rectangular prism.

So, we need to find out the volume of those 108 cubes in order to find the volume of the rectangular prism.

The formula for finding the volume of a cube is given by,

Volume of a cube = a³

where a represents the edge length

We know that, the edge length is 1/3 inch.

⇒ a = 1/3

Volume of a cube = (1/3)³

⇒ 1/3 × 1/3 × 1/3

⇒ 1/27 cubic inches

To find the volume of 108 cubes :

⇒ 108 × volume of one cube

⇒ 108 × 1/27

⇒ 4 cubic inches.

∴ The volume of 108 cubes is the volume of rectangular prism which is 4 cubic inches (option C)

5 0
3 years ago
Read 2 more answers
The average commute times for employees of a large company is 32 minutes. The commute time of 10employees are 40, 31, 32, 16, 25
Ira Lisetskai [31]

Given:

40,31,32,16,25,35,22,53,23 and 33.

a)

Sample mean:

\bar{x}=32

Population mean:

\mu=\frac{\Sigma(x_i)}{n}_{}\mu=\frac{40+31+32+16+25+35+22+53+23+33}{10}\mu=\frac{310}{10}\mu=31

b)

\sigma=\sqrt[]{\frac{\Sigma(x-\mu)^2}{n-1}}\sigma=\sqrt[]{\frac{81+0+1+225+36+16+81+484+64+4}{10-1}}\sigma=\sqrt[]{\frac{992}{9}}\sigma=\frac{\sqrt[]{992}}{3}\sigma=10.4987\text{Error}=\pm z\times\frac{\sigma}{\sqrt[]{n}}

z value is not given so taken as 95% on confidence level

z=1.96\text{Error}=\pm1.96\times\frac{10.4987}{\sqrt[]{10}}\text{Error}=\pm6.5072\text{Error}=\pm6.5

4 0
1 year ago
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