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bixtya [17]
3 years ago
6

Help help helpe help !!!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics
1 answer:
Mashcka [7]3 years ago
6 0

Answer:

Yes it is a right triangle

Step-by-step explanation:

Brainliest pls

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Assume that​ women's heights are normally distributed with a mean given by mu equals 62.3 in​, and a standard deviation given by
Salsk061 [2.6K]

Answer: a)  0.6141

b) 0.9772

Step-by-step explanation:

Given : Mean : \mu= 62.3\text{ in}

Standard deviation : \sigma = \text{2.4 in}

The formula for z -score :

z=\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}

a) Sample size = 1

For x= 63 in. ,

z=\dfrac{63-62.3}{\dfrac{2.4}{\sqrt{1}}}=0.29

The p-value = P(z

0.6140918\approx0.6141

Thus, the probability is approximately = 0.6141

b)  Sample size = 47

For x= 63 ,

z=\dfrac{63-62.3}{\dfrac{2.4}{\sqrt{47}}}\approx2.0

The p-value = P(z

=0.9772498\approx0.9772

Thus , the probability that they have a mean height less than 63 in =0.9772.

8 0
4 years ago
the distance between Spice island and Kay island is 3.4 inches on the map. If the scale on the map is 1 inch = 25 miles, what is
Ronch [10]
One inch equals 25 miles
Two inches equals fifty miles
Three inches equals seventy five miles
Four inches equals one hundred miles

.1 inches equals 2.5 miles
.4 inches equals 10 miles

Seventy five miles plus ten miles equals eighty five miles.
7 0
3 years ago
I don’t know how to find X or Y very urgent, need to figure this out how to solve plz help
Lena [83]

Answer:

x = 9

y = 9√3 = 15.6

Step-by-step explanation:

The triangle given is a right triangle, therefore:

✔️apply trigonometric ratio formula to find x:

Reference angle = 60°

Hypotenuse = 18

Adjacent = x

Thus:

Cos (60) = x/18

Multiply both sides by 18

18×cos(60) = x

9 = x

x = 9

✔️find y by applying pythagorean theorem:

y² = 18² - x² (pythagorean theorem)

y² = 18² - 9² (substitution)

y² = 243

y = √243

y = √(81*3)

y = 9√3 = 15.6

3 0
3 years ago
Which statement best explains whether △PQR is congruent to △XYZ?
ra1l [238]
<span>Two geometic shapes are congruent if one can be mapped to the other only by using rigid motions: translations and rigid rotations. The third statement is the only one that is true for any triangles â–łPQR and â–łXYZ, in whichever position they are.</span>
3 0
3 years ago
Wich points are 4 units apart? (Image provided)
Andrew [12]

Answer:

D, B

Step-by-step explanation:

D is 4 units above B

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