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LenKa [72]
3 years ago
14

Graph a line with a slope of -2/5 that contains the point (-3, 5)

Mathematics
1 answer:
ValentinkaMS [17]3 years ago
8 0
Picture so I am able to solve problem please
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andrew-mc [135]
This is probably a scam dont listen
8 0
3 years ago
Find the surface area of each figure pls 7-10
Vlad [161]

Answer:

7) 42 inches^{2}

8) 358 meters^{2}

9) 320 yards^{2}

10) 288 miles^{2}

Step-by-step explanation:

Problems 7, 8, and 10 all use the same formula: the formula for the surface area of a rectangular prism.

Formula: 2 * (lw + lh + hw)

where l = length, w = width and h = height

This is a condensed form of the sum lw + lw + lh + lh + hw + hw where each product is a face of the prism.

replace each variable in the formula above with the values given in your problems for 7, 8 and 10:

7) 2 * (3*3 + 3*2 + 2*3) = 2 * (9 + 6 + 6) = 2 (21) = 42

8) 2 * (12*7 +12*5 + 5*7) = 2 * (84 + 60 + 35) = 2(179) = 358

10) 2* (12*4 + 12*6 + 4*6) = 2 * (48 + 72 + 24) = 2(144) = 288

Now 9 is a little different, as it contains a regular pentagon. However it is not much different from the other problems as it is also a prism.

The formula for the area of any regular polygon can be in the form:

Area = \frac{1}{2}ap where the a stands for apothem (which is the distance from the center of a regular polygon to its side, in this case it is 5.5 yds) and the p is the perimeter of the polygon.

The reason for this formula involves the polygon being divided into as many congruent triangles as it has sides, but that is for another time : )

Given this formula for the area of the pentagon, you can substitute values:

Area = \frac{1}{2}(5.5)(number of sides * length of a side)

Area =  \frac{1}{2}(5.5)(5 * 8) = 110

And get that the area of the face is 110 yd^2

the rest of the faces are rather straightforward as they contain rectangles of sides 4 yds and 5 yds, and you would end up with 5 of them (for each side of the pentagon)

Therefore by adding up each of the bases and the sides, you should get:

110 + 110 + 20 + 20 + 20 + 20 + 20 = 320

Hope that helped : )

3 0
3 years ago
What is the y-intercept of the quadratic function f(x) = (x – 8)(x + 3)? (8,0) (0,3) (0,–24) (–5,0)
DiKsa [7]
The correct answer is:  [C]:  " (0, 24) " .
___________________________________________________________

Explanation:
___________________________________________________________

Given the quadratic function:
___________________________________________________________

          →  "  y = (x <span>− 8) (x + 3) "  ;   </span>←  Note:  Replace the "f(x)" with: "y" ; 

→  Find the "y-intercept".
___________________________________________________________

→  Note:  The "y-intercept" is the coordinate of the point(s) of the graph of the equation at which the graph crosses the "x-axis" when "x = 0" . 

   → So;  we set plug in "0" for "x" into our equation; and solve for "y" ; 

          → " y = (x − 8) (x + 3) " ;

          →   y = (0 − 8) (0 + 3)  ; 

          →   y = (-8) * (3)  ;  
 
          →   y = - 24 ; 
___________________________________________________________

So, the "y -intercept" of the <em><u>given</u></em> quadratic function is:
 
the point at which:  "x = 0 ; y = -24 " ;

      →  that is; the point  the coordinates:  " (0, - 24) " ;
___________________________________________________________
  →  which is:  Answer choice:  [C]:  " (0, - 24) " .
___________________________________________________________
9 0
3 years ago
Read 2 more answers
What is slope intercept for 7x+6y=30
GalinKa [24]
<span>7x+6y=30
6y = -7x + 30
  y = -7/6x + 5

answer:
slope = -7/6</span>
4 0
3 years ago
Read 2 more answers
How do you do this?
lora16 [44]
X/5 = 24/8
  (because the triangles are similar)

x/5 = 3

x = 5*3 = 15 Answer

a/27 = 8/24 = 1/3 
a =  9  Answer
6 0
3 years ago
Read 2 more answers
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