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kumpel [21]
3 years ago
9

Find the value of x​

Mathematics
2 answers:
svp [43]3 years ago
4 0
X equals x because x is theoretically x the letter
Kisachek [45]3 years ago
4 0
X is 31.
You add the angles that are given to you, which would equal 149. Now, you subtract that from 180 because all triangle are equal to 180. You end up with 31.
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Kieran mother gets a restaurant bill for $25 he has a coupon for 15% of the acid Discount Supply she had 20% as tip what is the
Ipatiy [6.2K]

Answer:

$8.75

Step-by-step explanation:

Given data

Bill= $25

Coupon Discount=15%

Tip= 20%

Let us first find 15% of the $25

=15/100*25

=0.15*25

=$3.75

Let us first find 20% of the $25

=20/100*25

=0.20*25

=$5

Hence the coupon and the tip combined is

=3.75+5

=$8.75

6 0
3 years ago
A triangle has side lengths of 10, 11, and 15 . what type of triangle is it?
Trava [24]
Answer: scalene and obtuse

Justification:

You can find the angles using the law of cosine:

c^2 = a^2 + b^2 - 2abcos(γ)

=> cos(γ) = [a^2 + b^2 - c^2] / (2ab)

1) cos(γ) = [10^2 + 11^2 - 15^2] / (2*10*11) = - 0.0181818

=> γ = arccos(-0.0181818} ≈ 91°

2) cos(α) = [b^2 + c^2 - a^2 ] / 2bc = [11^2 + 15^2 - 10^2] / (2*11*15] = 0.7454545

=> α = arccos(0.7454545) ≈ 41.8°

3) cos(β) = [a^2 + c^2 - b^2] / (2ac) = [10^2 + 15^2 - 11^2] /(2*10*15) = 0.68

=> β = arccos(0.68) ≈ 47.2°

4) Verification: 91° + 41.8° + 47.2° = 180°

5) The triangles with the three different sides are called scalenes (which you can tell with only the measures of the sides).

6) The triangles with one angle greater than 90° are called obtuse.

So, the triangle is scalene and obtuse.
7 0
2 years ago
The circle above has an area of 144 pi cm^2. What is the area of the blue sector? Use 3.14 for pi.
sineoko [7]

Answer:

150.72 cm^2

Step-by-step explanation:

The blue area has an angle of 120 degrees, and 120/360 = 1/3, which shows that the blue area is 1/3 of the circle. In that case, the blue area is just 144pi/3. That simplifies to 48 pi.

48*3.14 = 150.72

8 0
3 years ago
Which of the following properties does not work for addition?
Simora [160]

Answer:

I believe it is Identity

3 0
2 years ago
Read 2 more answers
What is the union sets M= (1,7,10,11,15) and N=(5,15)?
katen-ka-za [31]

Answer: <em>(1,5,7,10,11,15)</em>

To get the union of two sets of numbers, all you do is combine the numbers from least to greatest. If a number repeats in the 2 sets, you only put it once.

7 0
3 years ago
Read 2 more answers
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