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Elina [12.6K]
3 years ago
9

In triangle abc, two angles add to be 91 degrees. The third side is 90 degrees. True or false

Mathematics
2 answers:
Rudiy273 years ago
6 0
The answer is  false because a triangle always equals to 180°

Hope my answer helped :)
mezya [45]3 years ago
5 0
It's false, a triangle always equals to 180°
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What is the area of the figure below? Equation below v
ladessa [460]

Answer:

68 in^2

Step-by-step explanation:

6 0
3 years ago
​What number could be replaced with t? 1/3 = 2/t
vekshin1
T(1÷3)=2
t=2÷(1÷3)
t=2×3
t=6
7 0
4 years ago
Which statements are true? Choose all answers that are correct. A. All rectangles are parallelograms. B. All squares are rectang
alekssr [168]
<span><u><em>The correct answers are:</em></u>
A, B and C.

<u><em>Explanation</em></u><span><u><em>: </em></u>
<u>A parallelogram</u> is a quadrilateral with both pairs of opposite sides parallel.
<u>A rectangle</u> is a parallelogram with all right angles, so yes, every rectangle is a parallelogram.
<u>A square</u> is a parallelogram with all right angles and all congruent sides; since it is a parallelogram with all right angles, every square is a rectangle.
<u>A rhombus</u> is a parallelogram with all congruent sides.
Since a square is a parallelogram with all congruent sides, then every square is a rhombus.
<u>A </u><u>trapezoid</u> is a quadrilateral with one pair of parallel sides. Since a rhombus is a parallelogram, with 2 pairs of parallel sides, rhombus are not trapezoids.</span></span>
4 0
3 years ago
(a) Write an expression, in terms of n, for the nth term of this sequence.<br><br> -1,3,7,11
ExtremeBDS [4]

The expression for nth term is:

a_n = -5+4n

Further explanation:

Given sequence is:

-1,3,7,11

We have to determine first if this is a arithmetic sequence or geometric sequence

The sequence is an arithemtic sequence if the common difference of cosecutive terms is same.

In this case,

d = a_2 -a_1 = 3-(-1) = 3+1 = 4\\a_3 -a_2 = 7-3 = 4

As the common difference is same the sequence is an arithmetic sequence

Standard form of arithmetic sequence is:

a_n = a_1+(n-1)d

Putting the values of a_1 and d

a_n = -1 + (n-1)(4)\\a_n = -1+4n-4\\a_n = -5+4n\\

The expression for nth term is:

a_n = -5+4n

Keywords: Arithmetic Sequence, nth term

Learn more about arithmetic sequence at:

  • brainly.com/question/4282963
  • brainly.com/question/4109519

#LearnwithBrainly

6 0
3 years ago
HELPP!!!! 30 POINTS!!! Points A and B are on the different sides on line l, the distance between point A and the line l is 10 in
Rom4ik [11]

OC = 3 in

Refer to the attachment for complete explaination

5 0
3 years ago
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