Please help, will mean a lot:)

Mathematics

1 answer:

mixer [17]3 years ago

8 0

OXY=90degree...and OYZ=90degree because the tangents supported in the circle are always 90

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the perimeter of a rectangle is 58cm. the length is 7cm less than three times the width. find the length and width. (translate t

Pie

Answer:

length = 20 cm

width = 9 cm

Step-by-step explanation:

perimeter = 58 cm

58cm = 2*L+2*w equation 1

L = 3w -7 equation 2

where:

L= length

w=width

so we have:

58 = 2(3w -7) +2w

58 = 6w -14 +2w

58 +14 = 8w

72 = 8w

w = 72/8

w = 9 cm = width

we have:

L = 3(9) -7 = 20 cm = length

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Triangle XYZ is an isosceles Triangle with legs XY and ZY. Segments QR and QS are perpendicular bisectors of triangle XYZ. Find

Oduvanchick [21]

we know XYZ is an isosceles, thus XY = YZ, the perpendicular segment bisectors of QR and QS are also equal to each other in length, because they both are segment bisectors and thus YR=RX=YS=SZ, so any perpendicular line stemming from the same length on each side will meet its counterpart right on the middle of the triangle.

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3 years ago

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Hoochie [10]

Answer:

the equation of the least-squares line for the data is: $\hat Y=9.3+1.3x$

Step-by-step explanation:

In a simple linear regression model, such as, $\hat Y=b_0+b_1x$ , the coefficients bo and b1 are estimated through the method of least squares by the use of the equations: