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Sunny_sXe [5.5K]
3 years ago
12

3x + 5 equals 19 - 4x what does x equals to

Mathematics
2 answers:
GenaCL600 [577]3 years ago
8 0

Answer:

<h3>x = 2</h3>

Step-by-step explanation:

3x + 5 = 19 - 4x     <em>subtract 5 from both sides</em>

3x = 14 - 4x      <em>add 4x to both sides</em>

7x = 14    <em>divide both sides by 7</em>

x = 2

Rudik [331]3 years ago
7 0

Answer:

x=2

Step-by-step explanation:

3x + 5 = 19 - 4x

Add 4x to each side

3x + 5 +4x= 19 - 4x+4x

7x+5 = 19

Subtract 5 from each side

7x+5-5 =19-5

7x =14

Divide each side by 7

7x/7 = 14/7

x = 2

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Can y’all help me and tell me what the answer is please I’m a bit stuck
12345 [234]

Answer:

The correct choice is:

-2 to the 4th power is positive 16.

Option C is correct.

Step-by-step explanation:

We need to find mistake make in work below:

(-2x^4)^4=-16x^{16}

The mistake here is when we have even power, the negative sign gets positive i.e (-a)^m=a^m if m is even

so, in our case it would be:

(-2x^4)^4=16x^{16}

The correct choice is:

-2 to the 4th power is positive 16.

Option C is correct.

5 0
2 years ago
A machinist can produce 12 parts in 40 min.how many parts can the machinist produce in 4 hours?
expeople1 [14]
Answer:

72 parts

Steps:

Convert the 4 hours into minutes. There are 60 minutes in an hour. Therefore, 4 hours = 240 minutes.

Divide 240 minutes by 40 minutes. This equals 6. Therefore, the machinist can produce the 12 parts 6 times in 4 hours.

Finally, multiply the 12 parts by the 6 times he can produce. Therefore, the machinist can produce 72 parts in 4 hours.
7 0
2 years ago
Read 2 more answers
Please help as soon as possible
Studentka2010 [4]
The lines are reciprocal because they cross to form an X. Also 4/5 is the reciprocal of 5/4
4 0
2 years ago
Read 2 more answers
Tell whether the angles are adjacent or vertical. Then find the value of x.
KiRa [710]

Answer:

Vertical angles

X=41

Step-by-step explanation:

X+42=2x+1

42=x+1

X=41

5 0
3 years ago
If a car has tires with a radius of 1.5 ft and the tires are spinning at 840 rpm (revolutions per
tamaranim1 [39]

Answer:

89·98 mph

Step-by-step explanation:

First, we get the circumference of the tires:

Circumference = \pi × (radius × 2)

Circumference = 3.142 × (1·5 × 2)

Circumference = 3·142 × 3

Circumference = 9·426 ft

The circumference of the tire is equal to one round.

      1 round = 9·426 ft

840 rounds = ?

We cross multiply to get the length that the tires would cover in a minute

= <u>840 × 9·426</u>

       1

    1 minute = 7917·84 ft

60 minutes = ?

<u>60 × 7917·84</u>

          1

= 475070·4 ft

      5280 feet = 1 mile

475070·4 feet = ?

<u>475070·4 × 1</u>

     5280

475070·4 ÷ 5280 = speed of the car in mph

89·97545

Round this off to 2 decimal places...

= 89·98 mph

hope this helps! =)

5 0
3 years ago
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