All categories

3 years ago

3x + 5 = 12 - 7x Please someone answer

Mathematics

1 answer:

jonny [76]3 years ago

7 0

Answer:

x=7/10

Step-by-step explanation:

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

3x+5=12−7x

Step 1: Simplify both sides of the equation.

3x+5=12−7x

3x+5=12+−7x

3x+5=−7x+12

Step 2: Add 7x to both sides.

3x+5+7x=−7x+12+7x

10x+5=12

Step 3: Subtract 5 from both sides.

10x+5−5=12−5

10x=7

Step 4: Divide both sides by 10.

10x10=7/10

x=7/10

You might be interested in

Can you help me with 10 and 12

lubasha [3.4K]

Here are the answers for 10 and 12

6 0

3 years ago

you are on a 750 mile trip by car . ur car used seven gallons of gas to travel the first 210 miles of the trip. how much more ga

stepan [7]

Answer:

A total of 18 gallons of more gas

Step-by-step explanation:

7 gallons = 210 miles

750-210= 540

210*2 =420 miles 7*2=14 gallons

210/2= 105 7/2=3.5 gallons

525 miles 17.5 miles

210/14= 15 7/14=.5 gallons

540 miles 18 gallons

6 0

3 years ago

A bus travels 168 km on 14 litres of petrol how far will it travel on 27 litre

wariber [46]

Answer:

324 km

Step-by-step explanation:

5 0

3 years ago

WILL GET BRAILIEST FOR CORRECT ANSWER

Alex Ar [27]

Answer:

x = ± $\sqrt{20}$

Step-by-step explanation:

Given

x² = 20 ( take the square root of both sides )

x = ± $\sqrt{20}$

which can be simplified to

x = ± 2 $\sqrt{5}$

[ ± means plus or minus ]

5 0

3 years ago

If a quadratic function has x-intercepts at (-7,0) and 10,0), where would

madam [21]

Answer:

x = 1.5

Step-by-step explanation:

Since the axis of symmetry is between the 2 x intercepts, we can find it by finding the average of the x-coordinates of the 2 points.

(-7 + 10) / 2

3/2

= 1.5

So, the axis of symmetry is at x = 1.5

8 0

3 years ago