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Ede4ka [16]
3 years ago
7

What is 2(5-3v)+9v=28?

Mathematics
2 answers:
almond37 [142]3 years ago
7 0
10-6v+9v=28
10+3v=28
-10 -10
3v=18
3 3
v=6
Softa [21]3 years ago
7 0
2(5 -3v)+9v=28 10-6v+9v=28 -6v+9v=28-10 3v=18 3v÷3=18÷3 V=6
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I need help with this question it's for a important grade so pls really help.​
iogann1982 [59]

Answer:

Check pdf

Step-by-step explanation:

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4 0
3 years ago
Eli wants to plant 45 sunflower plants, 81 corn plants and 63 tomato plants in his garden. If he put the same number of plants i
Lynna [10]

Answer:

9

Step-by-step explanation:

For this problem, you would use the GCF

Find the GCF of 45, 81, 63

GCF(45, 81, 63) = 9

45 = 9 * 5

81 = 9 *9

63= 9 * 7

Since 5, 9, 7 have no common factors, the GCF has to be 9.

This means that the greatest number of plants he can put in each row is 9.

The number of rows he uses for each plant will (obviously) vary.

4 0
3 years ago
Confirm that f and g are inverses by showing that f(g(x)) = x and g(f(x)) = x.
charle [14.2K]

ANSWER

See below

EXPLANATION

Given

f(x) =  \frac{ {x}- 9 }{x + 5}

and

g(x) =   \frac{ - 5x - 9}{x - 1}

(f \circ \: g)(x)=  \frac{ (\frac{ - 5x - 9}{x - 1})- 9 }{(\frac{ - 5x - 9}{x - 1} )+ 5}

(f \circ \: g)(x)=  \frac{ \frac{ - 5x - 9 - 9(x - 1)}{x - 1}}{\frac{ - 5x - 9 + 5(x - 1)}{x - 1} }

Expand:

(f \circ \: g)(x)=  \frac{ \frac{ - 5x - 9 - 9x  + 9}{x - 1}}{\frac{ - 5x - 9 + 5x - 5}{x - 1} }

(f \circ \: g)(x)=  \frac{ \frac{ - 5x - 9x  + 9 - 9}{x - 1}}{\frac{ - 5x + 5x - 5 - 9}{x - 1} }

(f \circ \: g)(x)=  \frac{ \frac{ - 14x }{x - 1}}{\frac{ -14}{x - 1} }

Since the denominators are the same, they will cancel out,

(f \circ \: g)(x)= \frac{ - 14x}{ - 14}  = x

8 0
3 years ago
2x+16=7+2x <br>how do you solve if the variable is the same on both sides of the equation
jeka94
First subtract the 7 from both sides and that would equal 2x+9=2x then subtract 2x and the answer is 9
7 0
3 years ago
Read 2 more answers
The circumference of a circle is 251.2 millimeters. What is the circle's diameter? Use 3.14 for it.​
Bas_tet [7]

Answer:

80

Step-by-step explanation:

divide the circumference (251.2) by pi (3.14) and get 80

3 0
3 years ago
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