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Law Incorporation [45]
3 years ago
13

Expression equivalent?8x2 - 5x + 3x(4 - 2x)​

Mathematics
2 answers:
Setler79 [48]3 years ago
6 0

Answer:

x • (2x + 7)

Step-by-step explanation:

2.1     Pull out like factors :

  4 - 2x  =   -2 • (x - 2)

Equation at the end of step  2  :

 ((8 • (x2)) -  5x) +  -6x • (x - 2)

Step  3  :

Equation at the end of step  3  :

 (23x2 -  5x) +  -6x • (x - 2)

Step  4  :

Step  5  :

Pulling out like terms :

5.1     Pull out like factors :

  2x2 + 7x  =   x • (2x + 7)

aleksklad [387]3 years ago
5 0

Answer:

Step-by-step explanation:

8x² - 5x + 3x(4 - 2x) =8x² - 5x + 3x*4 - 3x*2x

= 8x² - 5x + 12x - 6x²

Now add the like terms

= 8x² - 6x² - 5x + 12x

= 2x² + 7x

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if someone could please please help me with this I would appreciate it , if you could also explain your answer that would be gre
weqwewe [10]

Answer:

height for the building = 551.8 ft

Step-by-step explanation:

The info given describes the shape of a right triangle.

Thus:

Reference angle = Angle of elevation = 23°

Opposite side = height of the building = ?

Adjacent side = 1,300 ft

Apply trigonometric function, TOA:

Tan 23 = Opp/Adj

Tan 23 = Opp/1,300

1,300 × Tan 23 = Opp

551.817261 = Opp

Opp ≈ 551.8 ft

height for the building = 551.8 ft

3 0
2 years ago
What is the measure of < BCD ? Justify your answer.​
Likurg_2 [28]

Answer:

  • please mark brainlist please

Step-by-step explanation:

4π/3 radians. Triangle A B C has angles labeled as follows: A, (101x + 2) degrees; B, 34x degrees; C, unlabeled. The measure of ∠BCD is 120°. )

8 0
2 years ago
What is the value of x?
rodikova [14]
1) expand the brackets 
6(-3 - x) - 2x = 14
-18 - 6x - 2x = 14
simplify
-18 - 8x = 14
then add 18 to both sides to get the x's on there own
-8x = 32
then divide by -8
x = 32/-8
x = -4

2) multiply everything by 7x
2 + (6 x 7x) + ( 17x × 7x) = 18 x 7x
2 + 42x + 119x^2 = 126x
put everything on one side
119x^2 - 84x + 2 = 0
then use quadratic equation to solve

x = 0.024671849 or 0.6812105039

 
6 0
3 years ago
If f(x) varies directly with x and f(x) = 72 when x = 6, find the value of f(x) when x = 3.
yaroslaw [1]

Answer:

36

Step-by-step explanation:

Since f(x) varies directly with x, f(x) can be expressed alternatively as \[f(x) = k * x\] where k is a constant value.

Given that f(x) is 72 when the value of x is 6.

This implies, \[72 = k * 6\]

Simplifying and rearranging the equation to find the value of k:

k = \frac{72}{6}

Hence k = 12

Or, \[f(x) = 12 * x\]

When x = 3, \[f(x) = 12 *3 \]

Or in other words, the value of f(x) when x=3 is 36

6 0
3 years ago
Read 2 more answers
There are 20 students on the school's student council. A special homecoming dance committee will be formed by randomly selecting
inysia [295]
3, because 6x3=18 and there'd be two people left over. And you need six people to form 1 committe and there's only two people left over so those two people just wouldn't be able to be part of anything.

Hope, this helps. :D

6 0
3 years ago
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