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astraxan [27]
2 years ago
14

Rewrite in simplest terms: 4 x − 5 ( x + 3 )

Mathematics
1 answer:
rusak2 [61]2 years ago
4 0

Answer:

Step-by-step explanation:

4x - 5(x + 3)         Remove the brackets. Watch the - sign and -5*3

4x - 5x - 15          Combine the xs

-x - 15

You might be interested in
The derivative of y with respect to x, when y = 3e^5x - 2 is:
Ede4ka [16]
Answer: 15e^5x

Step - by - step

y=3e^5x - 2

By the sum rule, the derivative of 3e^5x - 2 with respect to x is d/dx [ 3e^5x ] + d/dx [-2].

d/dx [ 3e^5x ] + d/dx [ -2 ]

Evalute d/dx [ 3e^5x ]

Since 3 is constant with respect to x , the derivative of 3e^5x with respect to x is
3 d/dx [ e^5x ].

3 d/dx [ e^5x ] + d/dx [ -2 ]

Differentiate using the chain rule, which states that d/dx [ f(g(x))] is f' (g(x)) g' (x) where f(x) = e^x and g(x) = 5x.

To apply the Chain Rule, set u as 5x.
3 ( d/du [ e^u] d/dx [5x] ) + d/dx [ -2]

Differentiate using the Exponential rule which states that d/du [ a^u ] is a^u ln(a) where a=e.

3( e^u d/dx[5x] ) + d/dx [ -2 ]
Replace
3(e^5x d/dx [5x] ) + d/dx [ -2 ]
3(e^5x( 5 d/dx [x] )) + d/dx [ -2 ]

Diffentiate using the Power Rule which states that d/dx [x^n] is nx^n-1 where n=1.
3(e^5x(5*1)) + d/dx [-2]
3 ( e^5x * 5 ) + d/dx [-2]

Multiply 5 by 3
15e^5x + d/dx [-2]

Since -2 is constant with respect to x, the derivative of -2 with respect to x is 0.
15e^5x + 0
15e^5x
5 0
1 year ago
Two jets leave an airport at the same time, flying in opposite directions. The first jet is traveling at three hundred seventy-s
gladu [14]
Here is the set using D = rt.


Jet 1:

rate = 377 mph

time = x

Distance = 9128 miles

Jet 2:

rate = 275 mph

time = x

Distance = 9128 miles

Equation:

377x + 275x = 9128

You finish.
8 0
3 years ago
What is the interest rate $14,095 at 3.8% for 5 1/2 years
ivanzaharov [21]

Answer:

373737373746372838484883848r

7 0
3 years ago
Write the least common multiple of the denominators in the equation 9 + 3/4x=7/8x-10
igomit [66]

Answer:

the lease common multiple is 8


6 0
3 years ago
(9⋅10
cestrela7 [59]

Answer:

  A. -18·10^6

Step-by-step explanation:

The rules of exponents apply to powers of 10 used in scientific notation. The associative and commutative properties of multiplication also apply.

<h3>Application</h3>

  (a^b)(a^c) = a^(b+c)

The numerical product is ...

  (9\cdot10^9)\cdot(-2\cdot10^{-3})=(9)(-2)(10^{9-3})=\boxed{-18\cdot10^6}

__

<em>Additional comment</em>

Expressed in scientific notation, the result would be ...

  -1.8\cdot10^7

Your calculator can perform this multiplication for you.

8 0
1 year ago
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