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4 years ago

5y-3y+1=7 solve for y

Mathematics

1 answer:

Juli2301 [7.4K]4 years ago

3 0

Answer:

y=3

Step-by-step explanation:

Let's solve your equation step-by-step.

5y−3y+1=7

Step 1: Simplify both sides of the equation.

5y−3y+1=7

5y+−3y+1=7

(5y+−3y)+(1)=7(Combine Like Terms)

2y+1=7

Step 2: Subtract 1 from both sides.

2y+1−1=7−1

2y=6

Step 3: Divide both sides by 2.

2y /2 = 6 /2

y=3

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3 years ago

Find the nonpermissible replacement for y in the expression y+3/y+3

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Answer:

Non-permissible value is $y=-3$

Step-by-step explanation:

we are given equation as

$f=\frac{y+3}{y+3}$

we know that denominator can not be zero

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and then we can solve for y

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So,

Non-permissible value is $y=-3$

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3 years ago

Read 2 more answers

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4 years ago

Read 2 more answers

Find the inverse f(x)=3x-2

Andreas93 [3]

Answer:

Step-by-step explanation:

hello friend

the answer is $\frac{x}{3}$ + $\frac{2}{3}$

To find the inverse, interchange the variables and solve for y

$f^{-1}$ (x) = $\frac{x}{3}$ + $\frac{2}{3}$

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3 years ago

Kalin walls at a streaky rate of 3 2/3 miles per hour. The beach is 4 1/4 miles from his home. How long will it take Kalin to wa

DENIUS [597]

Answer:

The time it will take Kalin will be 2h 33m

Step-by-step explanation:

First we will transform the numbers to work more comfortable

d = distance

v = velocity

v = 3 2/3 miles per hour = 3.33 mi/h

d = 4 1/4 milles = 4.25 mi

As the time it takes to go to the beach and back asks us, we have to do the distance 2 times

d = 4.25 mi * 2

d = 8.5 mi

To calculate the time it takes, we simply have to divide the distance by the velocity

t = d/v

t = 8.5 (mi) / 3.33(mi/h)

t = 2.55h

if we also want to express the minutes we can divide after the point .55 by 100 and multiply it by 60

(55/100)*60 = 33

t = 2h 33m

The time it will take Kalin will be 2h 33m

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3 years ago