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2 years ago

I don't understand this, I have the answer but I don't know or how to explain my work.

Mathematics

2 answers:

svp [43]2 years ago

8 0

Answer:

Step-by-step explanation:

0.25 = 1/4 = 5/20

0.35 = 35/100 = 7/20

5/20 + 7/20 = 12/20 = 6/10 = 3/5

horrorfan [7]2 years ago

4 0

Answer:

Step-by-step explanation:

so first you would do 0.25+0.35= 0.6

now put 0.6 into a fraction= 6/10 because 6 is in the 10th place then simplify 6/10=3/5 which to find that you divide each side by 2

Hope This Helped!

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The population mean annual salary for environmental compliance specialists is about $63 comma 500. A random sample of 31 specia

Nat2105 [25]

Answer:

0.0035289

Step-by-step explanation:

From the question;

mean annual salary = $63,500

n = sample size = 31

Standard deviation = $6,200

Firstly, we calculate the z-score of $60,500

Mathematically;

z-score = x-mean/SD/√n = (60500-63500)/6200/√(31) = -2.6941

So we want to find the probability that P(z < -2.6941)

We can get this from the standard normal table

P( z < -2.6941) = 0.0035289

3 0

2 years ago

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lina2011 [118]

Answer:

2x + 4 I would assume

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6 0

2 years ago

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Can you all please help me with problems 6 through 10? Please don’t use for points I’m extremely stressed and need help

patriot [66]

Answer:

See below.

Step-by-step explanation:

6.) (5)/6 ≤ 1 (Yes)

7.) 1.4(11) > 16

15.4 > 16 (No)

8.) 11.1 + 9.8 ≥ 21.01

20.9 ≥ 21.01 (No)

9.) 2.5 < (90)/30

2.5 < 3 (Yes)

10.) 1/2 > 3(1/6)

1/2 > 1/2 (No)

11.) 2.16 ≥ 3(0.6) - 0.5

2.16 ≥ 1.8 - 0.5

2.16 ≥ 1.3 (Yes)

12.) x < 2 (x is less than 2.)

13.) x ≥ -1 (x is greater than or equal to -1.)

5 0

2 years ago

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Factor completely 3x − 12. 3(x − 4) 3(x + 4) 3x(−12) Prime

garri49 [273]

3x - 12
3(3x/3 - 12/3)
3(x - 4)

The answer is: 3(x - 4).

6 0

2 years ago

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Answer if you know

Arlecino [84]

I've attached a plot of one such cross-section (orange) over the region in the x-y plane (blue), including the bounding curves (red). (I've set $y=1.25$ for this example.)

The length of each cross section (the side lying in the base) has length determined by the horizontal distance $x$ between the y-axis $x=0$ and the curve $y=\sqrt x$ . In terms of $y$ , this distance is $x=y^2$ . The height of each cross section is twice the value of $y$ , so the area of each rectangular cross section should be $2y^3$ .

This means the volume would be given by the integral

$\displaystyle\int_0^22y^3\,\mathrm dy$

8 0

2 years ago