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Fofino [41]
4 years ago
11

Solve the equation: 3(x - 4) = -21

Mathematics
2 answers:
Stells [14]4 years ago
6 0

Answer:

x= -3

Step-by-step explanation:

3(x-4)= -21

x - 4 = -7( to get this divide both sides of the equation by 3 )

x = -7 + 4 ( add 4 to both sides of the equation)

x = -3 ( then add -7 and 4 to get -3)

So clearly x = -3

HOPE THIS HELPED

salantis [7]4 years ago
6 0
HERE IS YOUR ANSWER


3(x-4)= -21

=3x-12=-21

=3x= -21+12

=3x= -9

= x= -9/3

=x= -3

DONT FORGET TO MARK BRAINLIEST AND HIT THE LIK.. man I’m just kidding
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I pull the throttle in my racing plane at a = 12.0 m/s2. i was originally flying at v = 100. m/s. where am i when t = 2.0, t = 5
Misha Larkins [42]

The distance covered by plane when t = 2s will be 176m and when t = 5s will be 350m and when t = 10s will be 400m found using equation of motion.

We have,

Acceleration of plane i.e. a = 12 m/s²

And,

Velocity of plane i.e. v = 100 m/s

And,

t₁ = 2s

t₂ = 5s

t₃ = 10s

So,

Now,

Using the equation of motion,

i.e.

S = vt - \frac{1}{2} at²

Here,

S = Distance,

v = initial velocity,

a = acceleration

t = time taken

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For t₁ = 2s,

Putting values in above equation we get,

S = (100 * 2) - (\frac{1}{2} * 12 * 2²)

On solving we get,

S = 200 - 24 = 176 m,

So,

Plane will be at 176m distance.

Now,

For t₂ = 5s,

Putting values in above equation we get,

S = (100 * 5) - (\frac{1}{2} * 12 * 5²)

On solving we get,

S = 500 - 150 = 350 m,

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Plane will be at 350m distance.

Now,

For t₃ = 10s,

Putting values in above equation we get,

S = (100 * 10) - (\frac{1}{2} * 12 * 10²)

On solving we get,

S = 1000 - 600 = 400 m,

So,

Plane will be at 400m distance.

Hence, we can say that the distance covered by plane when t = 2s will be 176m and when t = 5s will be 350m and when t = 10s will be 400m found using equation of motion.

To learn more about equation of motion click here

brainly.com/question/12114762

#SPJ4

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1 year ago
The area of a right triangle with one long leg measuring 5ft and hypotenuse measuring 13ft is..?
Yuliya22 [10]

Answer:

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Step-by-step explanation:

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