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ss7ja [257]
3 years ago
13

Y=9x+7,y=3x-11 i need to solve theeqayions by substition and show the work

Mathematics
1 answer:
djyliett [7]3 years ago
4 0
Times the second equation by 2 to get y=9x-33 and then subtract 
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A skydiving company insists
34kurt

Answer:

A skydiving company insists that its customers weigh at least 130 pounds, but no more than 280 pounds, including parachute and other gear. If the total weight of all gear is 25 pounds, write and solve a compound inequality that represents the weight range without gear that is acceptable.

105 ≤ x ≤ 255

think this is what you meant . . .

5 0
3 years ago
The length of a rectangle is five times it’s width if the area of the rectangle is 320m^2 find its perimeter
BlackZzzverrR [31]

Answer:

Perimeter of the rectangle = 96 meters.

Step-by-step explanation:

Let the width of the rectangle = K

So, the length of the rectangle = 5K

Area  = 320 sq meters

Now, Area of a Rectangle  = Length x Width

⇒  320  = K x  5K

or,5K^{2} = 320\\or, K^{2}  = \frac{320}{5}   = 64

So, the vlue of K = 8 or, K = -8

But as K represents a length hence, K ≠ -8

So, the <u>width of the rectangle = 8 meters</u>

and the<u> length  of the rectangle = 8 x 5 = 40 meters</u>

Now, Perimeter = 2(length + width)

                            = 2(8 + 40) = 96 meters.

So, the perimeter of the rectangle = 96 meters.

6 0
3 years ago
Over what interval is the function in this graph decreasing?
lys-0071 [83]

Answer:

The answer is D.

Step-by-step explanation:

8 0
3 years ago
Does anyone know a quick method to divide a whole number with a decimal
alina1380 [7]
<h2>Answer_use this method </h2>

d =  \frac{d(10 {}^{k + p}  - 10 {}^{k}) }{(10 {}^{k + p}  - 10 {}^{k})}

where

  • d=is the given decimal
  • k=is the number of terminating digits
  • p=is the number of repeating digits

Step-by-step explanation:

Greetings !

use the above formula to change any decimal into fraction form

Thus, plug in the value and solve

Hope it helps !

8 0
2 years ago
GEOMETRY Can anyone help for brainly, this is one of five questions, a (rotation, reflection, or translation) of 90° (clockwise,
lara31 [8.8K]

Answer:

See below-

Step-by-step explanation:

It depends on if you are transforming O to P or P to O

O to P would be rotate counterclockwise translate down 4

using the point (-3,2) from P and it's corresponding point from O (6,3)

rotate 90 counterclockwise (x,y)--> (-y,x) From point O - (6,3)--> (-3,6)

so after the rotation that point would be at (-3,6) to get the point to (-3, 2) move it down 4. so it is translated down 4

if you are transforming O to P is would be the opposite

rotate 90 clockwise and translate up 4

4 0
3 years ago
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