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ser-zykov [4K]
3 years ago
7

Can someone help me please​

Mathematics
1 answer:
Gnom [1K]3 years ago
6 0
8. Obtuse angle 9. Line segment 10. Ray 11. Right angle
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Explain how to find the slope of the line.
Marina CMI [18]

Step-by-step explanation:

slope =  \frac{y2 - y1}{x2 - x1} \\   =  \frac{1 - 3}{6 - 2}  \\  =   \frac{ - 2}{4}  \\  =  -  \frac{1}{2}

Even if x₁ = 6, y₁ = 1 and x₂ = 2, y₂ = 3 the result remains same.

<h3>#CMIIW</h3>
3 0
3 years ago
A study looked at n=238 adolescents, all free of severe illness.23 Subjects wore a wrist actigraph, which allowed the researcher
Vesnalui [34]

Answer:

Step-by-step explanation:

Since n < 30, we will find the t-score and compare that to the t-score of a significance level of 1%.    

Since they are asking if the difference is significant, we will have a two tailed test, with degree of freedom being 22, so our critical values are

t < -2.704 and t > 2.704

Our t-value for this situation is

t = ([µ + 5.8] - µ)/(1.4/√23)

It's µ + 5.8 because the problem told us that their levels are 5.8 mm higher than the average, so it's the average, plus 5.8

Simplify the equation...

t = 5.8/(1.4/√23)

t = 19.868

19.868 > 2.704, the evidence supports that there is significant difference between the sample and the population

8 0
3 years ago
PLEASE MATH HELP DESPERATE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! WILL DO ANYTHING PLEASE. WILL GIVE BRAINLIEST!!!!!!!!!!!!!!!!!
sasho [114]
The midpoint is the average of the endpoint coords.
If (x,y) is F, then -6=(-14+x)/2 and 7=(13+y)/2.
-14+x=-12 so x=2, and 14=13+y, so y=1 and F is (2,1).
so the answer is (2,1)
7 0
3 years ago
Read 2 more answers
BRAINLIEST + POINTS HELPPPPPPPPPPPP
Damm [24]

Answer:

B.   12/5

Correct me if I am wrong

5 0
3 years ago
Marie has a rectangular board 12 inches by 16 inches around which she wants to put a uniform border of sherlls. if she has enoug
Ede4ka [16]
Area of rectangular board = length (inches) x width (inches) = 12" x 16" = 192 in²

Area of the border is given as 128 in²

Adding the area of the board and the border gives (192 + 128)in² = 320 in²

Set this up as the algebraic equation (x + 12)(x + 16) = 320 and solve for x:

Remember to use the FOIL method, which is multiplying the terms in the order of first, outer, inner, last.

x² + 12x + 16x + 192 = 320

x² + 28x + 192 - 320 = 0

x² + 28x - 128 = 0

solve for the two x values:

(x + 32)(x - 4) = 0, and knowing we only need the positive x value

x = 4 or 4 inches is the width of the border



5 0
3 years ago
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