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svp [43]
3 years ago
10

Simplify 5(x + 3) - 9x+4.O A. 14x+7O B.-4x+19O C. 14x+19D. -4x+7​

Mathematics
2 answers:
Julli [10]3 years ago
8 0

Answer:

B

Step-by-step explanation:

distribute

5x+15-9x+4

combine like terms

-4x+19

omeli [17]3 years ago
4 0

Answer:

B -4x+19

-4x+19 is the simplest form of 5(x + 3) - 9x+4

Step-by-step explanation:

5(x + 3) - 9x+4.

= 5x + 15 - 9x + 4

= -4x + 19

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Given that D(x)=2 select all of the following that are true statements
topjm [15]
If you're going to do a multiple choice question, please include the choices so we can better help you!
6 0
3 years ago
What are the real and imaginary parts of z ?<br><br> z = 32 + 41.9i
goblinko [34]

Answer:

The real part is 32, while the imaginary part is 41.9

Step-by-step explanation:

z is a complex number. A complex number is made up of real and imaginary parts.

The real part is the number that stands alone, while the imaginary part is the number that is directly beside the i.

i is actually equal to \sqrt{-1}. There is no solution for that.

Therefore, for the given expression, the real part is 32, while the imaginary part is 41.9.

Note: the imaginary part does not contain i.

5 0
3 years ago
An apartment rents for $800 a month the monthly rent is expected to increase $15 each year what will the rent at the end of the
Nataly [62]
To find this you would do 800 + 15x where x is the amount of years. 

For 9 years it would be 800 + 15(9) which is 800 + 135. 

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5 0
3 years ago
This diagram of a rectangular city park was drawn using a scale of 1 centimeter to 20 meters
I am Lyosha [343]

Answer:

Scale factor for the drawing from actual park = \frac{1}{20}

Area of the actual park = 1200 cm²

Step-by-step explanation:

Length of the rectangular city park = 5 cm

Width of the rectangular park = 6 cm

Using scale factor 1 cm = 20 meters

Scale factor = \frac{\text{length of the park in drawing}}{\text{Actual length of park}}=\frac{1}{20}

\frac{5}{\text{Actual length of park}}=\frac{1}{20}

Actual length = 5 × 20 = 100 meters

Actual width = 6 × 20 = 120 meters

Area of the rectangular park = length × width

                                               = 100 × 120

                                               = 1200 square meters

Therefore, Scale factor from actual length to the length in drawing = 1 : 20

Area of the rectangular park = 1200 square feet

7 0
3 years ago
What is ∑n=16[4(−5)n−1] equal to?<br><br> Enter your answer in the box.
Cerrena [4.2K]

Step-by-step explanation:

Geometric Sequence formula for general term:

an = a1(r^n-1)

a1 = 4 × (-5)^1-1

a1 = 4

r = -5

Summation formula for geometric sequence :

Sn = a1 ( 1 - r^n / 1 - r )

...<em>take n from the top of the summation.</em>

= 4 ( 1 -(-5)^6 / 1 -(-5)

= -10416.

4 0
2 years ago
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