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3 years ago

How to know if a triangle is an equalatirral, isoscles, or obtuse?

Mathematics

1 answer:

ikadub [295]3 years ago

4 0

Equilateral: all sides are the same length
isosceles: two sides are the same length
obtuse: there is 1 obtuse angle

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Will Give Brainliest!

jeka57 [31]

Answer:

d ≤ - 7

Step-by-step explanation:

Given

- 38d - 57 ≥ - 19d + 76 ( add 19d to both sides )

- 19d - 57 ≥ 76 ( add 57 to both sides )

- 19d ≥ 133

Divide both sides by - 19, reversing the symbol as a result of dividing by a negative quantity.

d ≤ - 7

5 0

2 years ago

The diagram shows a 3 cm x 5 cm x 4 cm cuboid

Rainbow [258]

Answer:

a) The length of segment AC is approximately 5.83 centimeters.

b) The angle ACD is approximately 34.5º.

Step-by-step explanation:

a) Since $AB \perp BC$ , the length of segment $AC$ is determined by Pythagorean Theorem, that is:

$AC = \sqrt{(5\,cm)^{2}+(3\,cm)^{2}}$

$AC \approx 5.831\,cm$

The length of segment AC is approximately 5.831 centimeters.

b) Since $AB \perp BC \perp AD$ , the length of segment $AD$ is determined by this Pythagorean identity:

$AD = \sqrt{(3\,cm)^{2}+(5\,cm)^{2}+(4\,cm)^{2}}$

$AD \approx 7.071\,cm$

The angle ACD is determined by the following trigonometric expression:

$\cos C = \frac{AC}{CD}$

$\cos C = \frac{5.831\,cm}{7.071\,cm}$

$\cos C = 0.825$

$C = \cos^{-1} 0.825$

$C \approx 34.448^{\circ}$

The angle ACD is approximately 34.448º.

4 0

2 years ago

What is 5✓28 +✓63 In simplest radical form I need it asap.

Ksenya-84 [330]

Answer:

13✓7

Step-by-step explanation:

5✓28 + ✓63

Break the radical into perfect squares.

5 times ✓4 times ✓7 + ✓9 times ✓7

5 times 2 times ✓7 + 3 ✓7

10✓7 + 3✓7

13✓7

5 0

3 years ago

The current temperature is 20 degrees. This is 6 degrees less than twice the temperature that it was 6 hours ago. What was the t

mestny [16]

2x - 6 = 20
2x = 20 + 6
2x = 26
x = 26/2
x = 13 <==

5 0

3 years ago

12. How many students scored at least 60 on the test? a) 3 b) 4 c) 11 d) 7

Troyanec [42]

4
i don’t have an explanation

7 0

3 years ago