3 years ago

What is the value of x in the equation 3(2x + 4) = ?6? (4 points) ?3 1 12 19

Mathematics

2 answers:

Gala2k [10]3 years ago

4 0

Answer:

-2

Step-by-step explanation:

i just took the test

PilotLPTM [1.2K]3 years ago

3 0

Answer:

Step-by-step explanation:

3(2x + 4)=?

6x + 12

6x/6=x

12/6=2

x=2

You might be interested in

A ferry departs from a port along the Sands River at 10:00 am. The ferry travels at a speed of 15 mph in still water and returns

jek_recluse [69]

Answer:

Speed of river's current = 5 mph

Step-by-step explanation:

Let 'd' be the distance covered

Let x be the speed of the rivers current

Speed upstream = 15-x

speed downstream = 15+x

Time = distance / speed

time upstream = $\frac{d}{15-x}$

time downstream = $\frac{d}{15+x}$

the ferry trip upstream takes twice as long as its return trip downstream

$\frac{d}{15-x}$ = $\frac{2d}{15+x}$

divide both sides by d

$\frac{1}{15-x}$ = $\frac{2}{15+x}$

cross multiply

$15+x= 2(15-x)$

$15+x= 30-2x$

Add 2x on both sideds

$15+3x= 30$

subtract 15 from both sides and divide by 3

$3x=15$

x=5

Speed of river's current = 5 mph

8 0

3 years ago

As an estimation we are told 5 miles is 8 km. <br> Convert 24 km to miles.

Oksi-84 [34.3K]

Answer:

Step-by-step explanation:

24*5=120 / 8 = 15

15 is answer.

3 0

3 years ago

which of the given expressions are equivalent?select all that apply.3z+2z and 5z, {8x-8x}-y and 0,9.1 +4.5a-2.5a and 11.1a,-7y[3

Basile [38]

3z+2z and 5z 9.1+4.5a-2.5a and 11.1a and y-6(3) and y-18

6 0

3 years ago

Read 2 more answers

Determine the range of the function $f(x) = -4x^2-8x-6$. Enter your answer in interval notation.

saveliy_v [14]

Answer:[tex]y=-4x^2 -8x-6

Step-by-step explanation:

6 0

3 years ago

Find the value of x.

Julli [10]

Answer:

...

Step-by-step explanation:

3 0

3 years ago