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bazaltina [42]
4 years ago
12

Write an equivalent expression for 4(3a+7)+3 (2a+5) if a=5, is the the solution to both expressions the same

Mathematics
1 answer:
artcher [175]4 years ago
3 0
No because thefirst one is equal to 91 and the other is equal to 15
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The relationship between the distance run and the time for Amy can be represented by the equation Y equals 17.45X, where she ran
Kipish [7]

Question;

Assumption:

Let us assume Brandon's running speed is = 18.30 and

Ruben's running speed is = 16.50 and

Answer:

The two equations that can represent the relationship between the meters and second for Brandon and Ruben are;

Brandon → Y₁ = 18.3·X₁ and

Ruben → Y₂ = 16.5·X₂

Step-by-step explanation:

The equation is of the form

Y = 17.45·X

That is Amy ran Y meters in X seconds

Therefore we have

17.45 = \frac{Y}{X} or the value 17.45 is the running speed of Amy

Therefore, where the running speed of Brandon is 18.30  and the running speed of Ruben is 16.50  we have

Y meters ran by Brandon in X seconds given by

Y₁ = 18.3·X₁ and

For Ruben we have Y meters ran in X seconds given by

Y₂ = 16.5·X₂.

5 0
4 years ago
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Seth's family plans to drive 220 miles to their vacation spot. They would like to complete the drive in 4 hours. Find the averag
lions [1.4K]
Just divide 220 by 4 to get the answer. So the answer is 55.

Explanation:

220/4=55

If the drive needs to be completed in 4 hours and the drive is 220 miles then how much mph do they need to go

Miles/hours=miles per hour

Brainliest my answer if it helps you out
8 0
3 years ago
FREE BRAINLY! What is the equation of the line perpendicular to the line y = -3 and passing through the point (2, -1)?
Alex73 [517]

Answer:

x=2

Step-by-step explanation:

We want the equation of the line perpendicular to y=-3.

Notice that y=-3 is a horizontal line.

Therefore, in order to be perpendicular, our new equation must be vertical.

We know that it must pass through the point (2, -1).

Since it must be vertical, it must pass through the x-coordinate.

Therefore, our line must be:

x=2

It passes through (2, -1) and is a vertical line, so it’s perpendicular to y=-3.

5 0
3 years ago
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How many kilograms is in 12,321grams
tresset_1 [31]
12.321 kilograms are in 12,321 grams.  Since it takes 1000 grams to make one kilogram, what ever amount of grams of anything you have, divide it by 1000, and that will show how much kilograms you have.
6 0
4 years ago
Read 2 more answers
Given that f.x 3x-2 over x+1 g[x] x +5 evaluate f[-4] and gf [-2]
Jobisdone [24]

The value of f[ -4 ] and g°f[-2] are \frac{14}{3} and 13 respectively.

<h3>What is the value of f[-4] and g°f[-2]?</h3>

Given the function;

  • f(x) = \frac{3x-2}{x+1}
  • g(x)=x+5
  • f[ -4 ] = ?
  • g°f[ -2 ] = ?

For f[ -4 ], we substitute -4 for every variable x in the function.

f(x) = \frac{3x-2}{x+1}\\\\f(-4) = \frac{3(-4)-2}{(-4)+1}\\\\f(-4) = \frac{-12-2}{-4+1}\\\\f(-4) = \frac{-14}{-3}\\\\f(-4) = \frac{14}{3}

For g°f[-2]

g°f[-2] is expressed as g(f(-2))

g(\frac{3x-2}{x+1}) =  (\frac{3x-2}{x+1}) + 5\\\\g(\frac{3x-2}{x+1}) =  \frac{3x-2}{x+1} + \frac{5(x+1)}{x+1}\\\\g(\frac{3x-2}{x+1}) =  \frac{3x-2+5(x+1)}{x+1}\\\\g(\frac{3x-2}{x+1}) =  \frac{8x+3}{x+1}\\\\We\ substitute \ in \ [-2] \\\\g(\frac{3x-2}{x+1}) =  \frac{8(-2)+3}{(-2)+1}\\\\g(\frac{3x-2}{x+1}) =  \frac{-16+3}{-2+1}\\\\g(\frac{3x-2}{x+1}) =  \frac{-13}{-1}\\\\g(\frac{3x-2}{x+1}) =  13

Therefore, the value of f[ -4 ] and g°f[-2] are \frac{14}{3} and 13 respectively.

Learn more about composite functions here: brainly.com/question/20379727

#SPJ1

6 0
2 years ago
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