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3 years ago

4x-20 + x = 180 what is this answer

Mathematics

2 answers:

Naya [18.7K]3 years ago

6 0

Answer:

Step-by-step explanation:

Step 1:

4x - 20 + x = 180

Step 2:

5x - 20 = 180

Step 3:

5x = 180 + 20

Step 4:

5x = 200

Answer:

x = 40

Hope This Helps :)

AlekseyPX3 years ago

3 0

Answer:

x=40

Step-by-step explanation:

4x-20+x=180

5x-20=180

5x=200

x=200/5

x=40

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3(5b-1)=5 solve for b 4(3y-1)=20 solve for y

Gnom [1K]

3(5b-1)=5
Get rid of the brackets
15b-3=5
add 3 to both sides of the equation
15b=8
divide both sides of the equation by 15
b=0.53

4(3y-1)=20
12y-4=20
12y=24
y=0.5

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3 years ago

Write the augmented matrix for the following system of equations. y + 2x = 0 -3x + 2y = -2

beks73 [17]

Answer:

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Step-by-step explanation:

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3 years ago

2x - 5y = - 15

UkoKoshka [18]

Answer:

2x+15=5y

y=(2x+15)/5

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3 years ago

Read 2 more answers

2v^2-12 =-12v Would really appreciate it loves❤️

Black_prince [1.1K]

For this case we have the following equation:

$2v ^ 2-12 = -12v$

Rewriting we have:

$2v ^ 2 + 12v-12 = 0$

Dividing by 2 to both sides of the equation:

$v ^ 2 + 6v-6 = 0$

We apply the quadratic formula:

$x = \frac {-b \pm \sqrt {b ^ 2-4 (a) (c)}} {2a}$

We have to:

$a = 1\\b = 6\\c = -6$

Substituting:

$x = \frac {-6 \pm \sqrt {6 ^ 2-4 (1) (- 6)}} {2 (1)}\\x = \frac {-6 \pm \sqrt {36 + 24}} {2}\\x = \frac {-6 \pm \sqrt {60}} {2}\\x = \frac {-6 \pm \sqrt {4 * 15}} {2}\\x = \frac {-6 \pm2 \sqrt {15}} {2}$

Thus, we have two roots:

$x_ {1} = - 3+ \sqrt {15}\\x_ {2} = - 3- \sqrt {15}$

ANswer:

$x_ {1} = - 3+ \sqrt {15}\\x_ {2} = - 3- \sqrt {15}$

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3 years ago

PLS HELP I NEED HELP

Vinvika [58]

Answer:

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3 years ago