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OLga [1]
3 years ago
14

Evaluate the expression,75m+11n, when m=3 and n= 8.

Mathematics
1 answer:
yulyashka [42]3 years ago
5 0

use the substitution method

75m+11n

75(3)+11(8)

225+88

= 313

Answer : 313

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Can you put the picture

Step-by-step explanation:

6 0
3 years ago
Answer before 11:59 plzzz
Alex17521 [72]
0.0392 or 3.92%
The exponential growth formula can find the interest rate.

y - tolat value (P +I) (216)
a - principal (200)
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x - time in years (2 yrs)
Substitute known values

divide both sides by 200

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5 0
2 years ago
Plz help me 75 points for the 2 questions!!!
liraira [26]

Answer:

<h3>#1</h3>

<u>The system of equations:</u>

  • 2x + 7y = -11
  • 3x + 5y = -22

Solve by elimination.

<u>Triple the first equation, double the second one, subtract the second from the first and solve for y:</u>

  • 3(2x + 7y) - 2(3x + 5y) = 3(-11) - 2(-22)
  • 6x + 21y - 6x - 10y = -33 + 44
  • 11y = 11
  • y = 1

<u>Find x:</u>

  • 2x + 7*1 = -11
  • 2x = -11 - 7
  • 2x = -18
  • x = -9

<u>The solution is:</u>

  • x = -9, y = 1
<h3>#2</h3>

<u>Simplifying in steps:</u>

  • 8u - 29 > -3(3 - 4u)
  • 8u - 29 > - 9 + 12u
  • 12u - 8u < -29 + 9
  • 4u < -20
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3 0
3 years ago
a rectangle has a length of 14 meters and a width of 200 centimeters. What is the area of the rectangle in meters?
Alborosie

Answer:

a=28m^2

Step-by-step explanation:

Given:

l=14m

w=200cm

Required

a=?

w in meters

Formula:

1m=100cm

b=200cm---criss cross it

b*100cm/100cm=1m*200cm/100cm

b=2m

a=l*w

a=14m*2m

a=28m^2

4 0
3 years ago
Solve: 9x+y=2<br> -4x-y=-17
beks73 [17]

Answer:

2

−

9

x

Step-by-step explanation:

6 0
2 years ago
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