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Deffense [45]
3 years ago
12

Write an equation for a line perpendicular to y = -5x – 4 and passing through the point (15,5)

Mathematics
1 answer:
ozzi3 years ago
8 0

Answer:

y = 1/5x + 2

Step-by-step explanation:

y = - 5x - 4

Slope: -5

Slope of the perpendicular line: 1/5

Point (15,5)

y-intercept: 5 - (1/5)(15)

= 5 - 3 = 2

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Find the total number of diagonals for a polygon of 10 sides.
Ugo [173]
Diagonals = n(n-3)/n where n is the number of sides

if a polygon have 10 sides
= 10(10-3)/10
= 7

thus, the polygon have 7 diagonals.
7 0
3 years ago
40x40x40+26-98+45x78x78x78 then divide by 3
kykrilka [37]
You've written "then" before 3, so i assume the real question is:

(40 * 40 * 40 + 26 - 98 + 45 * 78 * 78 * 78) / 3
Use "PEMDAS" first solve under the parenthesis, then after it.

= (64000 + 26 - 98 + 21354840) / 3
= 21418768 / 3
= 7139589.33

In short, Your Answer would be: 7139589.33

Hope this helps!
7 0
3 years ago
Find the distance between points (-3,-4) and (1,-2)
Ludmilka [50]

Answer:

√20 or 4.47 ish

Step-by-step explanation:

√(1--3)²+(-2--4)²

√(1+3)²+(-2+4)²

√(4)²+(2)²

√16+4

√20

4.47 ish

(Hopefully this is correct, have a nice day!)

6 0
3 years ago
What is equivalent to 8c+6-3c-2
IgorC [24]
8c + 6-3c -2

8c -3c + 6-2 = 5c + 4

Brainliest please!
8 0
3 years ago
Read 2 more answers
Julie will build a rectangular pen for her dog against a barn. A wall from the barn will form one side of the pen. She has 32 m
MAXImum [283]

Answer:

<h3> The width (side perpedicular to the barn):  <u>x = 8 m</u></h3><h3>      The lenght (side parallel to the barn):  <u>y = 16 m</u> </h3>

Step-by-step explanation:

x  - the width of the barn

She has 32 m of fencing so for the lenght remain (32-2x) m of fencing:

y = 32 - 2x

Area of the fencing:  A = x•y

A(x) = x•(32 - 2x)

A(x) = -2x² + 32x             ←  quadratic function

The maximum value of quadratic function occurs at:  x=-\frac b{2a}

a = -2,  b = 32

x=-\frac b{2a}=-\frac{32}{2\cdot(-2)}=-(-8)=8

32-2x = 32 - 2•8 = 16

4 0
3 years ago
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