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3 years ago

Which equation would be the best to solve by completing the square?

Mathematics

1 answer:

Anvisha [2.4K]3 years ago

5 0

I can do quadratic dude

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Can someone help me please ASAP

zmey [24]

Answer:

solution,

Let <DEF= x°

<CDE= 2x°

<BAF= 90°

The sum of interior angle of hexagon= 720°

<A + <B + <C + <D + <E +<F = 720°

$90 + 145 + 115 + 2x + x + 160 = 720 \\ 510 + 3x = 720 \\3x + 510 = 720 \\ 3x + 510 - 510 = 720 - 510 \\ 3x = 210 \\ \frac{3x}{x} = \frac{210}{3} \\ x = 70 \: degree$

Again,

$< \: cde = 2x \\ \: \: \: \: \: \: \: \: \: \: \: \: = 2 \times 70 \\ \: \: \: \: \: \: \: \: \: \: \: \: = 140 \: degree$

Hope this helps...

Good luck on your assignment..

4 0

3 years ago

What is the discount on a stethoscope that is marked down from $300 to $250

Aliun [14]

In percentage form it is 83.33% repeating, but in dollars it is $50

7 0

2 years ago

A w=-8 B w=-5 C w=5 D w=8

algol [13]

Answer:

Step-by-step explanation:

Plug in every scenario, in see if it equal to each other.

D is the only one that is equal.

8 0

3 years ago

I will give brillents for right answer The price of bananas can be found using the equation: P = $0.59n, where P is the price an

Andreyy89

The constant proportionality is $0.59

7 0

3 years ago

If 10 pencils and 7 erasers cost $4.23 and 3 pencils and 1 eraser cost $0.95, what is the cost of 2 erasers?

QveST [7]

Answer: $0.58

Step-by-step explanation:

Let x represent pencil and y represent eraser

10x + 7y = 4.23 → 1(10x + 7y = 4.23) → 10x + 7y = 4.23

3x + y = 0.95 → -3(3x + y = 0.95) → -21x - 7y = -6.65

-11x = -2.42

÷-11 ÷-11

x = 0.22

3x + y = 0.95

3(0.22) + y = 0.95

0.66 + y = 0.95

y = 0.29

2y = 2(0.29) = 0.58

8 0

3 years ago