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3 years ago

Please helppppp asap

Mathematics

2 answers:

Stolb23 [73]3 years ago

7 0

Answer:

Step-by-step explanation:

A results in p^2 -3p - 10

B results in p^2 -3p - 10

C results in p^2 - 7p + 10

so none of these are correct

D is the correct answer

hodyreva [135]3 years ago

5 0

Answer C

When you multiply that together (c), it gives you p^2, -5p, -2p, and 10. Add the -5-2, and it gives you -7, or the original equation.

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The coordinates of the endpoints of directed line sergeant ABC are A(-8,7) and C(7,-13). If AB:BC = 3:2 then the coordinates of

cestrela7 [59]

The correct answer is A) (1,-5)

Further explanation:

Given points are:

A(-8,7)=(x1,y1)

C(7,13)=(x2,y2)

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$x_B=\frac{mx_2+nx_1}{m+n}\\ = \frac{(3)(7)+(2)(-8)}{3+2}\\=\frac{21-16}{5}\\=\frac{5}{5}\\=1\\y_B=\frac{my_2+ny_1}{m+n}\\=\frac{(3)(-13)+(2)(7)}{3+2}\\=\frac{-39+14}{5}\\=\frac{-25}{5}\\=-5$

The coordinates of point B are (1,-5)

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3 years ago

Diameter of a cone base is 5 cm and a slant height is 4M find surface area

Nutka1998 [239]

Hi there!

The total surface area (tsa) of a cone can be calculated with this formula :

TSA = ( $\pi$ × r × slant height) + $\pi$ × r²

The "r" stands for "radius". The radius is equal to half the diameter, so in order to be able to use the formula, you'll need to divide the diameter by 2 to find the radius :

5 ÷ 2 = 2.5 = radius

Since the slang height is in meters, you'll need to transform it into centimeters in order to have both values in centimeters. To do so you'll need to use the cross product method :

1 m = 100 cm

4 m = x cm

(100 × 4) ÷ 1 = x cm

400 ÷ 1 = x cm

400 = x cm → The slant height is 400cm.

Now replace all the information in the formula and calculate everything :

TSA = ( $\pi$ × 2.5 × 400) + ( $\pi$ × 2.5²)

TSA = ( $\pi$ × 1,000) + ( $\pi$ × 6.25)

TSA ≅ 3,141.59 + 19.63

TSA ≅ 3,161.22 cm²

There you go! I really hope this helped, if there's anything just let me know! :)

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