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Maurinko [17]
3 years ago
6

What’s the distributive property of x(x+3)?

Mathematics
1 answer:
Alik [6]3 years ago
8 0

Answer:

X^2+3x

Step-by-step explanation:

X times x equals x^2

X times 3 equals 3x

separated by an addition sign so x^2+3x is the answer

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Paige use the equation y=kx to determine she would need 259 beads to create 7 necklaces. how many beads would she use per neckla
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Divide 259 by 7 (259/7)= 37 beads per necklace. If you wanted to check just multiply 7 and 37 (37x7)=259
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3 years ago
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The number or variable for 5 is the number 4, and there’s a negative sign in between. For the parentheses in front of the 6 ther
Amiraneli [1.4K]

Answer:

11x^4

Step-by-step explanation:

The double negative automatically makes something positive. Your new expression is 5x^4 + 6x^4.

The only other thing you need to do is combine like terms by adding them together.

11x^4

3 0
3 years ago
The thickness of metal wires used in the manufacture of silicon wafers is assumed to be normallydistributed with meanμ. To monit
yanalaym [24]

Answer:

(a) Null Hypothesis, H_0 : \mu = 10

(b) Alternate Hypothesis, H_A : \mu\neq 10

(c) One-sample t test statistics distribution :  T.S. = \frac{\bar X -\mu}{\frac{s}{\sqrt{n} } }  ~ t_n_-_1

(d) The value of the test statistic is 1.054.

(e) The p-value = 0.1493

(f) We conclude that the mean equals the target value of 10 which means that the output can be considered acceptable as it doesn't differs from the target value of 10.

Step-by-step explanation:

We are given that the thickness of metal wires used in the manufacture of silicon wafers is assumed to be normally distributed with mean μ. To monitor the production process, the thickness of 40 wires is taken.

The output is considered unacceptable if the mean differs from the target value of 10. The 40 measurements yield a sample mean of 10.2 and sample standard deviation of 1.2.

<u><em>Let </em></u>\mu<u><em> = mean thickness of metal wires used in the manufacture of silicon wafers.</em></u>

(a) Null Hypothesis, H_0 : \mu = 10   {means that the mean equals the target value of 10}

(b) Alternate Hypothesis, H_A : \mu\neq 10   {means that the mean differs from the target value of 10}

(c) The test statistics that will be used here is <u>One-sample t test statistics</u> as we don't know about the population standard deviation;

                     T.S.  = \frac{\bar X -\mu}{\frac{s}{\sqrt{n} } }  ~ t_n_-_1

where, \mu = sample mean = 10.2

            s = sample standard deviation = 1.2

            n = sample of yields = 40

(d) So, <u><em>test statistics</em></u>  =  \frac{10.2-10}{\frac{1.2}{\sqrt{40} } }  ~ t_3_9     

                               =  1.054

The value of the test statistic is 1.054.

(e) <u>Now, P-value of the test statistics is given by;</u>

        P-value = P(t_3_9 > 1.054) = 0.1493

<em>Now at 0.05 significance level, the t table gives critical values between -2.0225 and 2.0225 at 39 degree of freedom for two-tailed test. Since our test statistics lies within the critical values of t, so we have insufficient evidence to reject our null hypothesis as it will not fall in the rejection region due to which we fail to reject our null hypothesis.</em>

(e) Therefore, we conclude that the mean equals the target value of 10 which means that the output can be considered acceptable as it doesn't differs from the target value of 10.

7 0
3 years ago
If the first step in the equation 2x-8=5x+3 is "subtract 2x," then in the form of a paragraph explain in complete sentences the
zubka84 [21]
2x - 8 = 5x +3
First you will subtract the 2x and you will end up with -8 = 3x + 3.  Then you will need to move the 3 over by subtraction.  You will end up with -11 = 3x.  Now you will divide each side by 3 to get the x by itself.  You end up with -11/3 = x as your final answer.
6 0
3 years ago
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Is possible to form a triangle with the side lengths. 2 mm, 2 mm, 8 mm?
PIT_PIT [208]

Answer: Some-what. 8 mm on the bottom and 2 mm on the two sides. The triangle is called Isosceles triangle

Step-by-step explanation:

3 0
3 years ago
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