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andre [41]
3 years ago
7

PLEASE HELP!!!!!!!!!!!!!!!!!

Mathematics
2 answers:
Nookie1986 [14]3 years ago
4 0
The answer is 2 3/10. how do you not know this
mamaluj [8]3 years ago
3 0

Answer:

Hence, the number of hours he did work on both days is:

2\dfrac{3}{10}hour

Step-by-step explanation:

It is given that:

Clay worked 1\dfrac{1}{5}hour yesterday.

i.e. in simple fraction the number of hours he worked yesterday is:

1\dfrac{!}{5}=\dfrac{1\times 5+1}{5}=\dfrac{6}{5}hours

He worked 1\dfrac{1}{10}hour today.

i.e. the number of hours he worked today in simple fraction terms is:

1\dfrac{1}{10}=\dfrac{1\times 10+1}{10}=\dfrac{11}{10}hours

The number of hours he worked on both days is:

Number of hours he worked yesterday+Number of hours he worked today.

=\dfrac{6}{5}+\dfrac{11}{10}=\dfrac{6\times 2+11}{10}=\dfrac{12+11}{10}=\dfrac{23}{10}

which could also be represented as:

2\dfrac{3}{10}hour

Hence, the number of hours he did work on both days is:

2\dfrac{3}{10}hour

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Find the two Z-scores that separate the middle 73.72% on the Standard Normal Curve.
leonid [27]

Answer:

+1.12 and -1.12

Step-by-step explanation:

Let the two z scores be -z_1and+z_1.

Since  the two Z-scores that separate the middle 73.72% on the Standard Normal Curve, this can be represented by the equation:

P(-z_1

From the z table of the normal distribution, z₁ = 1.12. That is a z score of 1.12 gives 0.8686.

The two z scores are +1.12 and -1.12 = ± 1.12

4 0
3 years ago
HELP HELP HELP<br> Quick algebra 1 questions
beks73 [17]

<u>Hello:</u>

<u />

<u>Okay, this problem should be taken in a series of steps</u>:

<u>What is the slope's formula?</u>

  \rm\hookrightarrow  \frac{y_2-y_1}{x_2-x_1}

  • (x₁,y₁) -- first point
  • (x₂,y₂) -- second point

<u>Okay, now let's use this knowledge</u>  

10. (5,-19) and (-5,21)

       Slope = \frac{21--19}{-5-5} =\frac{40}{-10}=-4

11. (12,1) and (12, -1)

      Slope = \frac{-1-1}{12-12} =\frac{-2}{0}

12. (8,7) and (4,7)

     Slope = \frac{7-7}{4-7} =0

<u>Answer:</u>

  • Question 10: -4
  • Question 11: undefined
  • Question 12: 0

Hopefully that helps!

5 0
2 years ago
Twenty times a square of a positive integer plus 50 equals negative 40 times the square of the positive integer plus one-hundred
rusak2 [61]
20x^2+50 = -40x^2+110x [ Taking x as the unknown positive integer ]
4 0
3 years ago
Use a number line to arrange these numbers in order from least to greatest:<br> 2, 19, -11, 6, -5
SSSSS [86.1K]

the first one is -11,-5,2,6,19

5 0
3 years ago
What is the function of this graph?
Lesechka [4]

Answer:

x=y^2-2

Step-by-step explanation:

This graph, is a parabola that opens to the right.

To answer this question, we just use the vertex form of a sideways parabola- x=a(y-k)^2+h.

In this case, the vertex is (-2, 0), and our value of a is 1, since it opens to the right.

This gives us: x=1(y-0)^2+(-2)

Which simplifies to: x=y^2-2.

Also, the answer to the previous two questions are wrong.

The D value (Domain) is actually [2, ∞)

The R value (Range) is actually "All real numbers" (-∞, ∞)

Let me know if this helps!

3 0
3 years ago
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