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galina1969 [7]
3 years ago
13

I need major help!! I need to know the 4 letters that have the largest rate of change, but I also have to add more letters (The

amount of the rate of change) for example, if the rate of change way 5, then A would become E. Thanks so much!!

Mathematics
1 answer:
Luba_88 [7]3 years ago
5 0

Answer:

The answer ead

Step-by-step explanation:

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How do you factor this equation?<br> 7x²+5x-3
svetoff [14.1K]

Answer:

Step-by-step explanation:

This is a quadratic expression.  Use the quadratic formula to find the roots, and then once you have the roots, write the corresponding factors.

The coefficients of this quadratic expression are a = 7, b = 5 and c = -3

The discriminant is b^2 - 4ac, or 5^ - 4(7)(-3), or 25 + 84 = 109.  Because this is positive, we know that the expression has two unequal, real roots.

Using the quadratic formula, we now find these roots:

      -b ± √(discriminant)

x = --------------------------------   which here is:

                   2a

      -5 ± √109

x = -----------------

             14

The factors can be found from these two roots.  The first one is

      -5 - √109                  5 + √109

(x - ---------------- )  =  (x + ---------------- )

             14                              14

and the second is

        5 - √109              

(x + ---------------- )  

             14                

8 0
4 years ago
What is going to be the line for the equation y is smaller than -2x+1
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Step-by-step explanation:

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3 0
3 years ago
Suppose a sample of 30 employees from the manufacturing industry showed a sample mean of $23.89 per hour. Assume a population st
timama [110]

Answer:

The<em> p</em>-value of the test is 0.1212.

Step-by-step explanation:

A one sample <em>z</em>-test can be performed to determine whether the mean hourly wage differs from the reported mean of $24.57 for the goods-producing industries.

The hypothesis is defined as:

<em>H₀</em>: The mean hourly wage is same as the reported mean of $24.57 for the goods-producing industries, i.e. <em>μ</em> = $24.57.

<em>Hₐ</em>: The mean hourly wage differs from the reported mean of $24.57 for the goods-producing industries, i.e. <em>μ</em> ≠ $24.57.

The information provided is:

\bar x=\$23.89\\n=30\\\sigma=\$2.40

Compute the test statistic as follows:

z=\frac{\bar x-\mu}{\sigma/\sqrt{n}}=\frac{23.89-24.57}{2.40/\sqrt{30}}=-1.55

The test statistic value is, <em>z</em> = -1.55.

Compute the <em>p</em>-value of the test as follows:

p-value=2\times P(Z

*Use a <em>z</em>-table for the probability.

Thus, the<em> p</em>-value of the test is 0.1212.

4 0
4 years ago
-3/8+4/9 in a fraction
Andre45 [30]

- 3/8 + 4/9

= LCM = 72

= - 3 * 9/ 8 * 9 = -27/ 72

= 4 * 8 / 9 * 8 = 32 / 72

= (-27 + 32)/ 72

= 5/72

5 0
3 years ago
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The number is 6
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X=6
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3 years ago
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