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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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2. 8.SP.1.2
andrew11 [14]

Answer:

A

Step-by-step explanation:

A. because the line of best fit has to be at best fit between the points so is a good approximation of where all the points are heading when you try to predict something.

8 0
3 years ago
The percentage increase in the area of a rectangle if each of its sides is increased by 20% is.
SVETLANKA909090 [29]

The percentage increase in the area of a rectangle is 44% if each of its sides is increased by 20%.

<h3>What is a rectangle?</h3>

It is defined as two-dimensional geometry in which the angle between the adjacent sides is 90 degrees. It is a type of quadrilateral.

It is defined as the area occupied by the rectangle in two-dimensional planner geometry.

The area of a rectangle can be calculated using the following formula:

Rectangle area = length x width

New length = (120x/100)  m

New breadth = (120y/100)  m

New area = (6x/5 × 6y/5) m²

The difference between the original area = xy

new area 36xy/25

Percentage increase = (11xy/25 1/xy x 100)

= 44%

Thus, the percentage increase in the area of a rectangle is 44% if each of its sides is increased by 20%.

Learn more about the rectangle here:

brainly.com/question/15019502

#SPJ4

8 0
2 years ago
IXL 7th grade math could someone please help!
KIM [24]

Answer:

supplementary angles are two angles that when add equal 180 degrees.

The supplement of an angle is 180 - n.

Step-by-step explanation:

n = 17(180 - n)

n = 3060 - 17n

n + 17n = 3060

18n = 3060

n = 3060/18

n = 170

so the unknown angle (n) = 170 degrees and its supplement = (180 - 170 = 10)......= 10 degrees.

7 0
3 years ago
Read 2 more answers
Can someone help me on this pls? It’s urgent, so ASAP (it’s geometry)
GarryVolchara [31]

<u>Question 6</u>

1) \overline{AB} \cong \overline{BD}, \overline{CD} \perp \overline{BD}, O is the midpoint of \overline{BD}, \overline{AB} \cong \overline{CD} (given)

2) \angle ABO, \angle ODC are right angles (perpendicular lines form right angles)

3) \triangle ABO, \triangle CDO are right triangles (a triangle with a right angle is a right triangle)

4) \overline{BO} \cong \overline{OD} (a midpoint splits a segment into two congruent parts)

5) \triangle ABO \cong \triangle CDO (LL)

<u>Question 7</u>

1) \angle ADC, \angle BDC are right angles), \overline{AD} \cong \overline{BD}

2) \overline{CD} \cong \overline{CD} (reflexive property)

3) \triangle CDA, \triangle CDB are right triangles (a triangle with a right angle is a right triangle)

4) \triangle ADC \cong \triangle BDC (LL)

5) \overline{AC} \cong \overline{BC} (CPCTC)

<u>Question 8</u>

1) \overline{CD} \perp \overline{AB}, point D bisects \overline{AB} (given)

2) \angle CDA, \angle CDB are right angles (perpendicular lines form right angles)

3) \triangle CDA, \triangle CDB are right triangles (a triangle with a right angle is a right triangle)

4) \overline{AD} \cong \overline{DB} (definition of a bisector)

5) \overline{CD} \cong \overline{CD} (reflexive property)

6)  \triangle ADC \cong \triangle BDC (LL)

7) \angle ACD \cong \angle BCD (CPCTC)

8 0
2 years ago
Write an equation to describe the cost of the number of kilowatt-hours of electricity from 1,001 to 1,500 answers
Taya2010 [7]
1001x+1500=y. This is ur equation
3 0
3 years ago
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