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xeze [42]
3 years ago
14

1/2 (x-1) - 1/4 (3-x) =2​

Mathematics
1 answer:
ololo11 [35]3 years ago
4 0
1(x-1)/2-1(3-X)/4=2/1. X-1/2-3+x/4=2/1. Find common denominator. 2x-2-3+x=8. 2x+x-5=8 3x=8+5. X=13/3.
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Which represents the square of the sum of a number and 4 is 36
vfiekz [6]
36 divided by 4 =(9) which is the correct answer plz give brainliest
6 0
3 years ago
Which equation is being graphed here?
Effectus [21]
<h2><u>Answer:</u></h2><h3>\boxed{\boxed{\sf{y+4=-\frac{3}{2}(x-2)}}}</h3><h2><u></u></h2><h2><u>Solution Steps:</u></h2>

______________________________

<h3>1.) Graph each equation:</h3>

(I've included the graphs below.)

So your answer is c, \bold{y+4=-\frac{3}{2}(x-2)}.

______________________________

7 0
3 years ago
Listed below are pulse rates​ (beats per​ minute) from samples of adult males and females. Does there appear to be a​ difference
MrMuchimi

Answer:

There appears to be a difference between the pulse rates from samples of adult males and females. The average pulse rate of males is 63.75 while that of females is 75.875.

Coefficient of Variation (male) = 33.44%

Coefficient of variation (female) = 28.35%

Step-by-step explanation:

Mean (male) = \frac{sum of x}{n} =\frac{1020}{16} =63.75

Mean (female) = \frac{sum of y}{n} = \frac{1214}{16} = 75.875

Standard Deviation (male) = \sqrt{\frac{sum(x-63.75)^2}{16-1} } =21.315

Standard Deviation (female) = \sqrt{\frac{sum(y-75.875)^2}{16-1} } = 21.512

Coefficient of Variation  = \frac{Std dev}{mean} *100

For male, CV = \frac{21.315}{63.75} *100=33.44%%

For female, CV = \frac{21.512}{75.875} *100=28.35%

Comparison : Pulse rates of males has more variability than that of females since it has a greater coefficient of variation.

5 0
4 years ago
Read 2 more answers
Estimate the value of √15 to the nearest tenth.
Nadya [2.5K]

Answer:

3.9

Step-by-step explanation:

√15 = 3.9, rounded.

3 0
1 year ago
Read 2 more answers
How do I do these? I don’t understand how my teacher is teaching it so can someone explain
Mamont248 [21]

Here's some guidelines to help you:

For 1, 4, 5, and 6, they are 30-60-90 triangles. What's that you may ask? Well, it means that the sides have a predetermined length when one side is given. In #1 for example, you have a side of 11sqrt3, this means that "n" is 11 because in a 30-60-90 triangle, the longer side is the sqrt3 times the length of the shorter side. So to get the shorter side, we divide by sqrt3 to get 11. "m", or the hypotenuse, can be determined by taking twice the length of the shorter side. Since we figured out earlier that the shorter side is 11, 11 times 2 is 22. So the answer for #1 is n=11, m=22.

For 2 and 3, they are 45-45-90 triangles, triangles where the two lengths are the same and the hypotenuse is either leg length times sqrt2. In problem #2 for example, "y" must be 17 because one leg length is 17. "x", or the hypotenuse, is equal to 17sqrt(2) because 17 times sqrt(2).

You can apply all these rules to the other 4 problems I didn't explain.

Hope this long explanation clears your doubts!

5 0
3 years ago
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