3 years ago

Describe and correct the error in classifying the triangle

Mathematics

1 answer:

ValentinkaMS [17]3 years ago

8 0

Answer: all three angles need to be less than 90 degrees

Step-by-step explanation:

an acute triangle has 3 acute angles (less than 90 degrees). example: 60, 65, 55

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At combs store there is a 25% chance a customer enters the store within one minute of closing time. Describe the complementary e

12345 [234]

The complementary event is that a customer does not enter the store within one minute of closing, and the probability is 75%.

The complement is found by subtracting from 100%; 100-25 = 75%.

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4 years ago

Give each rate in miles per hour. Round to the nearest tenth.

bonufazy [111]

The answer is 5.5 mph

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3 years ago

Evaluate 2/3 (10-6) 1/2 <br>

Studentka2010 [4]

Answer:

$= \frac{2}{3} (10 - 6) \frac{1}{2}$

$= \frac{2}{3} (4) \frac{1}{2}$

$= \frac{8}{3} \times \frac{1}{2}$

$= \frac{4}{3}$

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3 years ago

Solve y⁄5 + 8 = 13 for y. A. 16 B. 25 C. 105 D. 1

creativ13 [48]

Answer:

Step-by-step explanation:

given

$\frac{y}{5}$ + 8 = 13

Isolate $\frac{y}{5}$ by subtracting 8 from both sides

$\frac{y}{5}$ = 5 ( multiply both sides by 5 )

y = 25 → B

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3 years ago

What are the real and complex solutions of the polynomial equation X^3-216=0

vazorg [7]

Answer:

$6,\ -3+3\sqrt{3}i,\ -3-3\sqrt{3}i$

Step-by-step explanation:

Factor the equation $x^3-216=0$ using formula for difference of the cubes:

$x^3-216=(x-6)(x^2+6x+36),$

then

$x-6=0\ or\ x^2+6x+36=0.$

1. The equation $x-6=0$ has real solution $x=6.$

2. The equation $x^2+6x+36=0$ has negative discriminant $D=6^2-4\cdot 36=36-144=-108,$ then it has two complex solutions

$x_{1,2}=\dfrac{-6\pm 6\sqrt{3}i}{2}=-3\pm3\sqrt{3}i.$

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4 years ago