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ycow [4]
3 years ago
8

I need help please!

Mathematics
1 answer:
o-na [289]3 years ago
5 0

Answer:0

Step-by-step explanation:

X = 0

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439,000 is the answer for, when you round 438,692
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3 years ago
What happens when you add and subtract like fractions
Cerrena [4.2K]

Answer:hey must have the same denominator (the bottom value). If the denominators are already the same then it is just a matter of either adding or subtracting the numerators (the top value). If the denominators are different then a common denominator needs to be found.

Step-by-step explanation:

5 0
2 years ago
Matthew participates in a study that is looking at how confident students at SUNY Albany are. The mean score on the scale is 50.
Alex Ar [27]

Answer:

b) 6.68%

Step-by-step explanation:

Normal Probability Distribution

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

The mean score on the scale is 50. The distribution has a standard deviation of 10.

This means that \mu = 50, \sigma = 10

Matthew scores a 65. What percentage of people could be expected to score the same as Matthew or higher on this scale?

The proportion is 1 subtracted by the p-value of Z when X = 65. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{65 - 50}{10}

Z = 1.5

Z = 1.5 has a p-value of 0.9332.

1 - 0.9332 = 0.0668

0.0668*100% = 6.68%

So the correct answer is given by option b.

7 0
3 years ago
Solve this with your work shown. (50 POINTS.)​
Ket [755]

top problems:

1-) x²-2x-8

<h2>(x-4)(x+2)</h2>

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2-) 4s²-4s+1

<h2>(2s-1)²</h2>

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3-) 6x²-3-7x

<h2>(2x-3)(3x+1)</h2>

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4-) 4u²+8u

<h2>4u(u+2)</h2>

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5-) t²-15

<h2>2t</h2>

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6-) 3x²-x-4

<h2>(3x-4)(x+1)</h2>

bottom problems:

1-) \frac{1}{4},-1

y=x²+\frac{3x}{4}-\frac{1}{4}

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2-)\sqrt{2},\frac{1}{3}

<h2>y=x²-\frac{x}{3}-\sqrt{2}x+\frac{\sqrt{2} }{3}</h2>

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

3-) 0, √5

<h2>y=x²-x√5</h2>

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

4-) 1,1

<h2>y= x²-2x+1</h2>

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

5-)-\frac{1}{4}, \frac{1}{4}

<h2>y=x²-\frac{1}{16}</h2>

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6-) 4,1

<h2>y=x²-5x+4</h2>

7 0
3 years ago
Determine m∠U if m∠R = 9x - 10 and m∠U = 3x + 4.
german

Answer:

50.5 degrees

Step-by-step explanation:

Since this is a parallelogram then...

Angle U + Angle R = 180

3x+4+9x-10=180

Combine like terms

12x-6=180

Add 6 to both sides

12x=186

Divide both sides by 12

x=15.5

Now we plug 15.5 in for x to find Angle U

3(15.5)4=46.5+4=50.5

Angle U = 50.5 degrees

4 0
3 years ago
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