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2 years ago

Solve for x 2(4x - 3)-8=4+2x Thanks!

Mathematics

2 answers:

eduard2 years ago

5 0

Answer: 3

Step-by-step explanation:

first substitute 2 into 4, so its 2*4 = 8x

Second, substitute 2 into -3 so itś 2*-3= -6

So, so far we're at 8x-6-8+4+2x, we combine the integers (which is -6 & -8, and we get -14)

So far, we are now at 8x-14=4+2x.

Now we add 14, to cancel out -14.

Then, we add 14 to 4, making 18.

Then, we subtract -2 to cancel out 2x.

Then, we subtract 2x to 8x, Making 6x

Now, final step :)

We divide 6x=18

which is 18 divided by 6

which is 3 :)

You got this, you're doing great!

Effectus [21]2 years ago

3 0

Answer:

x=3

Step-by-step explanation:

plz mark brainliest

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A person is watching a boat from the top of a lighthouse. The boat is approaching the lighthouse directly. When first noticed, t

otez555 [7]

Answer:

Distance covered by the boat was 446.27 feet

Step-by-step explanation:

A boat which is at the point C approaching the light house.

At point C angle of depression to the boat was 17°44' and when boat stops at point B angle of depression was 48°13'.

Length of the tower is 200 feet then distance DC traveled by the boat.

Since at point B angle of depression was 17°44' so we will convert the angle in degrees.

Angle of depression = ∠ACB = 17°44' = $17+\frac{44}{60}=17+0.73=17.73$

From ΔABC

tan 17.73° = $\frac{200}{BC}$

$0.320=\frac{200}{BC}$

$BC=\frac{200}{0.32}= 625 feet$

Now in ΔABD

∠ADB = 48°13' = 48° + $\frac{13}{60}=48 + 0.217$ = 48.217°

Now $tan(48.217)=\frac{200}{BD}$

$BD=\frac{200}{1.119}=178.73 feet$

Therefore distance DC = BC - BD

DC = 625 - 178.73 = 446.27 feet

So the answer is 446.27 feet was distance covered by the boat.

8 0

4 years ago

Read 2 more answers

Expand & simplify (x-2)(x+4)

AVprozaik [17]

You have to FOIL (multiply the first, then outer, then inner, then last)

(x-2)(x+4)

First: multiply x by x to get x².
Outer: multiply x by 4 to get 4x.
Inner: multiply -2 by x to get -2x.
Last: multiply -2 by 4 to get -8.

This gives you:

x² + 4x - 2x - 8

Combine like terms to get your final answer:

x² + 2x - 8

Hope this helped!! xx

8 0

3 years ago

Read 2 more answers

12+3y+y=? What is the answer?

puteri [66]

Answer:

12+4y

Step-by-step explanation:

12+3y+y=12+4y

3 0

3 years ago

Read 2 more answers