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julia-pushkina [17]
3 years ago
15

Which of the following words correctly describe a triangle with two 45 angles?

Mathematics
2 answers:
Tom [10]3 years ago
4 0
Well, first let's identify which answers are incorrect, then it will be easier to figure out which are correct.

A. Equilateral: An equilateral triangle is a triangle with 3 equal sides. Since there are 180 degrees in a triangle, an equilateral triangle would have three sides of 60 degrees, and none of 45 degrees. Answer? Incorrect.

B. Isosceles: An isosceles triangle has two sides that are equal. 45 and 45 are equal, therefore, this answer is: Correct!

C. Scalene: A scalene triangle has three unequal sides, therefore, this answer is incorrect.

D. Obtuse: An obtuse triangle has one angle that is more than 90 degrees, therefore, since 45 and 45 equal 90 already, this answer is: incorrect.

E. Right: A right triangle has one right angle (angle that equals 90 degrees) since 45 + 45 = 90, and 90 + 90 = 180, this answer is: Correct!

F. Equiangular: This last choice is practically the same as the first, therefore the answer is: incorrect.

The two correct answers are: B Isosceles, and E Right!
riadik2000 [5.3K]3 years ago
4 0
-- If the triangle has two equal angles, then it has two equal sides.
It's an 'isosceles' triangle.

-- If the triangle has two 45-degree angles, then the 3rd angle is 90 degrees.
It's a 'right' triangle.

Choices ' B ' and ' E ' are both correct.


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Find the the perimeter of triangle JKL
Leona [35]

Answer:

60

Step-by-step explanation:

Tangents to a circle from a common external point are congruent, thus

JA = JB = 6

AL = KC = 11

CK = KB = 13

Thus

perimeter = 2(6) + 2(11) + 2(13) = 12 + 22 + 26 = 60

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3 years ago
Jagroop is building a dock at his cottage. The length of the doc is 3 times the width, plus 2. Determine a simplified expression
MissTica

Answer:

Step-by-step explanation:

Let length = y    width = x

y = 3x + 2

Perimeter = Sum of all sides (or sum of both lengths and both widths)

2y + 2x

2(3x + 2) + 2x

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8x + 4

7 0
2 years ago
There are 3 different mathematics courses, 3 different science courses, and 5 different history courses. If a student must take
Damm [24]

Answer:

45 ways

Step-by-step explanation:

We are given;

there are 3 different math courses, 3 different science courses, and 5 different history courses.

Thus;

Number ways to take math course = 3

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The number of ways to take history course = 5

Now, if a student must take one of each course, the different ways it can be done is;

possible ways = 3 x 3 x 5 = 45 ways.

Thus, number of different ways in which a student must take one of each subject is 45 ways.

3 0
3 years ago
ALGEBRA 2 HELP PLEASE!
Tanya [424]
Pls. see attachment. I created that table for easy monitoring and understanding. 

Yellow cells are sums that are even.
Orange cell are sums that are multiples of 3.
Yellow cells w/ orange texts are sums that are both even and multiples of 3.

4 0
3 years ago
Which cypress ion is equivalent to 4(x+2) ?<br> 6x<br> 4(x)+4(2)<br> 4(x)+4<br> 8x
jenyasd209 [6]

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4(x) + 4(2)

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