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3 years ago

Need asapppp !!!!!!!

Mathematics

1 answer:

alina1380 [7]3 years ago

5 0

X=70, y=55

The triangle is an isosceles triangles. In an isosceles triangle, the base angles are congruent.

Then use the triangle angle sum theorem and set the equation to 180.

55+55+x=180
110+x=180
x=70

The angle with 55 degrees and the angle with the variable y are alternate angles. Meaning they are congruent.

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Do natural numbers have multiplicative inverse

hodyreva [135]

No,because a multiplcative inverse is when your changing a division or multiplcation sign!

6 0

3 years ago

If three quarters of a number decreased by twenty is equal to eighty two, what is that number?

Studentka2010 [4]

A number is :

$x$

_________________________________

Three quarters of it means :

$\frac{3}{4}x \\$

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Decrease by 20 means :

$\frac{3}{4}x - 20 \\$

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Equals to 82 means :

$\frac{3}{4}x - 20 = 82 \\$

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What is that number ?

x asked so we must solve the above equation for x.

Let's do it....

$\frac{3}{4}x - 20 = 82 \\$

Plus sides 20

$\frac{3}{4}x = 82 + 20 \\$

$\frac{3}{4}x = 102 \\$

Multiply sides by 4

$3x = 102 \times 4$

Divided sides by 3

$x = \frac{102 \times 4}{3} \\$

$x = \frac{102}{3} \times 4 \\$

Simplify

$x = 34 \times 4$

$x = 136$

So that number is 136 .

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And we're done.

Thanks for watching buddy good luck.

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5 0

3 years ago

Solve please i need this fast

Rufina [12.5K]

Answer:

Step-by-step explanation:

5 0

3 years ago

Given triangle ABC, A=105°, a=10cm, b=7cm, find B,C and c.

Whitepunk [10]

The value of the side c will be 5.56 cm and angle C is 32.49° and angle B is 42.51°.

<h3>What is law of cosine?</h3>

Let there is a triangle ABC such that |AB| = a units, |AC| = b units, and |BC| = c units and the internal angle A is of θ degrees, then we have:

a² + b² – 2ab cos C = c²

Given triangle ABC, A = 105°, a = 10 cm, b = 7 cm.

Then we have

7² + c² – (2 · 7 · c) cos 105° = 10²

c² + 3.62c – 51 = 0

On solving, we have

c = 5.56

Then the angle C will be

10² + 7² – 2 · 7 · 10 · cos C = 5.56²

149 – 140 cos C = 30.91

cos C = 0.8435

C = 32.49°

We know that

∠A + ∠B + ∠C = 180°

105° + ∠B + 32.49° = 180°

∠B = 42.51°

Learn more about law of cosines here:

brainly.com/question/17289163

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4 0

2 years ago

Which of the following points is the greatest distance form y -axis a.2,7 b.3,5 c.4,3 d.5,1

ohaa [14]

Answer:

Step-by-step explanation:

It's d because it has the highest x value. The higher x value is the farther it is from the y-axis

7 0

3 years ago