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dangina [55]
3 years ago
7

Solve the equation.Find the product of each sum and difference. (2c + 8)(2c – 8)

Mathematics
2 answers:
FinnZ [79.3K]3 years ago
4 0

Answer:

4c^2 - 16c + 16c - 64

4c^2 - 64

Step-by-step explanation:

LiRa [457]3 years ago
4 0

Answer:

= 4c² - 64

Step-by-step explanation:

(2c + 8)(2c – 8)

= 4c² - 16c + 16c - 64

= 4c² - 64

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The area of parallelogram WXYZ is approximately 45 square units.
neonofarm [45]

Answer:

Option (4)

Step-by-step explanation:

Area of a triangle = \frac{1}{2} (a.b.\text{Sin}\theta)

Where a and b are the sides of a triangle and θ is the angle between the sides a and b.

By this rule,

Area of ΔWZY = \frac{1}{2}(\text{WZ}).(\text{YZ}).\text{Sin}(115)

45 = \frac{1}{2}(\text{YZ}).(10).\text{Sin}(115)

9 = (YZ).Sin(115)°

YZ = \frac{9}{\text{Sin}(115)}

YZ = 9.93

Perimeter of parallelogram WXYZ = WX + XY + YZ + WZ

                                                         = 9.93 + 10 + 9.93 + 10

                                                         = 39.86

                                                         ≈ 40 units

Therefore, perimeter of the parallelogram is 40 units.

Option (4) is the answer.

4 0
3 years ago
Solving systems of equations<br><br> X-2y=0<br> Y=2x-3
bearhunter [10]
\left \{ {{x-2y=0} \atop {y=2x-3}} \right. \\\\Substitute\ second\ equation\ to\ first:\\\\x-2(2x-3)=0\\x-4x+6=0\\-3x=-6\ \ \ \ \ |:-3\\x=2\\\\y=2\cdot2-3\\y=4-3=1\\\\ \left \{ {{y=1} \atop {x=2}} \right.
5 0
4 years ago
Read 2 more answers
Solve for x<br> If you don’t know how to do it don’t answer
goblinko [34]
Your giving 5 points for this shi
3 0
3 years ago
Solve for y when x =0 <br> -9x-2y=-20
madam [21]

10

substitute 0 for x in the equation.

-9(0) - 2y= -20

0 - 2y = -20

-2y= -20 (divide by -2)

y = 10

5 0
3 years ago
Read 2 more answers
Please hwelp please​
Fantom [35]

Answer:

2⁸ > 2.38 × 10² > 6³ > 2.16 × 10¹ > \sqrt{300}, 300%

Step-by-step explanation:

Given numbers are,

2.38 × 10², √300, 2⁸, 300%, 6³, 2.16 × 10¹

We have to arrange these numbers in the decreasing order(from greatest to least)

2.38 × 10² = 2.38 × 100 = 238

√300 = 10√3 ≈ 17.32

2⁸ = 256

300% = \frac{300}{100} = 3

6³ = 216

2.16 × 10¹ = 21.6

Therefore, decreasing order (from the greatest to least) will be,

256 > 238 > 216 > 21.6 > 17.32 > 3

2⁸ > 2.38 × 10² > 6³ > 2.16 × 10¹ > \sqrt{300}, 300%

5 0
3 years ago
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