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3 years ago

Factor completely −5x2 + 10x − 25.

Mathematics

1 answer:

garri49 [273]3 years ago

3 0

5(2x-7)

Hope this helps !

Have a great day!

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Using point-slope form, write an equation of the line that passes through (2,-1) and has a slope of -5

expeople1 [14]

Y – y1 = m(x – x1)

y-(-1)=-5(x-2)

Y+1=-5(x-2)

5 0

3 years ago

The average age of 6 men is 35 years and

PSYCHO15rus [73]

Answer:

39.50

42.50

Step-by-step explanation:

Age of the 2 men = sum of the ages of the 6 men - sum of the ages of the 4 men

Average = sum of ages / total number of men

35 = sum of ages / 6

sum of ages = 35 x6 = 210

32 = sum of ages / 4

32 x 4 = sum of ages

128

210 - 128 = 82

age of the younger man = x

age of the older man = 3 + x

x + 3 + x = 82

2x + 3 = 82

2x = 82 - 3

2x = 79

x = 79/2 = 39.5

older man = 39.5 + 3 = 42.50

7 0

3 years ago

Simplify the following:<br><br> <img src="https://tex.z-dn.net/?f=%5Cfrac%7B8x%5E2y%5E2-10xy%5E3-22y%7D%7B2y%5E2%7D" id="TexForm

alisha [4.7K]

Answer:

$\frac{4x^2y-5xy^2-11}{y}$

Step-by-step explanation:

$\frac{8x^2y^2-10xy^3-22y}{2y^2}$

$=\frac{8x^2y-10xy^2-22y}{2y}$

$=\frac{4x^2y-5xy^2-11}{y}$

[RevyBreeze]

5 0

3 years ago

Read 2 more answers

Regular triangular pyramid has 6 cm long base edge and slant height k=9 cm. Find the lateral area of the pyramid.

gregori [183]

Answer:

81 cm²

Step-by-step explanation:

Since, the lateral face of a triangular pyramid is a triangle,

Given,

The base edge or the base of one lateral face of pyramid, a = 6 cm,

And, the slant height or the height of the face, k = 9 cm,

Thus, the area of one lateral face of the pyramid,

$A=\frac{1}{2}\times a\times k$

$=\frac{1}{2}\times 6\times 9$

$=\frac{54}{2}$

$=27\text{ square cm}$

We know that, a Regular triangular pyramid has 3 lateral faces,

Hence, the total lateral area of the pyramid,

$L.A.=3\times\text{ The area of one lateral face}$

$=3\times 27$

$=81\text{ square cm}$

5 0

3 years ago

Read 2 more answers

PLEASE HELP 7TH GRADE MATH

eimsori [14]

Oof... you will need 46,656 to get all 6 prizes .... Throw a die.
Each number on the die depicts one of the 6 prizes.
The number of times you throw describes the number of boxes.

5 0

3 years ago