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3 years ago

What’s the answer for 3(x+4)=-18

Mathematics

2 answers:

atroni [7]3 years ago

8 0

Answer:

x = -10(see explanation!)

Step-by-step explanation:

With any equation, you will want to isolate the variable, in this case x. Here's a step by step:

3(x+4) = -18

Distribute the 3:

3*x + 4*3 = -18

Simplify:

3x + 12 = -18

Subtract 12 on both sides to isolate x:

3x + 12 - 12 = -18 - 12

Simplify:

3x = -30

Finally, divide by three to get the x value:

3x/3 = -30/3

x = -10

bija089 [108]3 years ago

6 0

Answer: 10 or -10

Step-by-step explanation: 3x + 12 = -18

-12 both sides then you get 3x = -30 divide by 3 which equals x = 10 or -10

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Step-by-step explanation:

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2 years ago

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Help Me With This Question Please!

Andrej [43]

Answer:

∠AOB = 120°

∠BOC = 140°

∠BOD = 140°

Step-by-step explanation:

First, find X !

Full circle is 360°

360 = (2x + 80) + (5x + 40) + 4x + x

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3 years ago

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A line passes through the points (4, 19) and (9, 24). Write A linear function in the form Y equals MX plus be for this line.

avanturin [10]

Answer:

y = x + 15

Step-by-step explanation:

okay so you're gonna use the y2-y1/x2-x1 formula to find the slope (m)

24 - 19/9 - 4 = 5/5 = 1

so that is your slope (m)

and now if you follow your slope then you should get your y-intercept (b)

4 - 1 = 3 19 - 1 = 18

(3, 18)

3 - 1 = 2 18 - 1 = 17

(2, 17)

2 - 1 = 1 17 - 1 = 16

(1, 16)

1 - 1 = 0 16 - 1 = 15

(0, 15)

so thats your y-intercept (b)

and the equation will look like:

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3 years ago

A family went on vacation and used 45.3 gallons of gasoline to travel 150 miles. How many total gallons of gasoline will they ne

victus00 [196]

Answer:

d) $105.7\ \text{gallons}$

Step-by-step explanation:

$150\ \text{miles}$ requires $45.3\ \text{gallons of fuel}$

$1\ \text{mile}$ requires $\dfrac{45.3}{150}\ \text{gallons of fuel}$

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So, total amount of gasoline required for the trip is $60.4+45.3=105.7\ \text{gallons}$ .

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3 years ago