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3 years ago

Can someone please help me I really need help please help me help thank you

Mathematics

2 answers:

KiRa [710]3 years ago

7 0

That is a isosceles triangle, therefore x and the top angle are the same.

There’s 180 degrees in a triangle.

Therefore:

(180 - 38)/2 = x
142/2 = x
71 = x

Stels [109]3 years ago

7 0

Answer:

X=71 degrees

Step-by-step explanation:

Because it's an isosceles triangle, the length of two side should be same. Which means two of the angle should also be the same. Therefore, with that information we can get

2x+38=180

Move 38 to the other side

2x=142

Move "2" to another side by divide both side by 2

x=71

Now you get the answer.

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i need help with simplifying fractions only the top ones i will do the making of a decimal or ill ask the question later

Vladimir79 [104]

Answer:

see explanation

Step-by-step explanation:

(a)

$\frac{32}{40}$ ← divide numerator and denominator by 4

= $\frac{8}{10}$ = 0.8

(b)

$\frac{35}{50}$ → divide numerator and denominator by 5

= $\frac{7}{10}$ = 0.7

(c)

$\frac{60}{40}$ ← divide numerator and denominator by 4

= $\frac{15}{10}$ = 1.5

8 0

2 years ago

A square has a diagonal length of 10 ft. Draw a diagram and determine the perimeter of the square.

denpristay [2]

The perimeter of the square is: $20\sqrt2$ ft

Step-by-step explanation:

The picture is attached with the answer.

the diagonal of a square divides it into two right angled-triangles.

We can use one of the triangle to find the length of side as the diagonal will be the hypotenuse of the triangle

Let a be the side of the square, then according to Pythagoras theorem

$d^2=a^2+a^2\\(10)^2 = 2a^2\\2a^2=100$

Dividing both sides by 2

$\frac{2a^2}{2}=\frac{100}{2}\\a^2=50$

Taking Square root on both sides

$\sqrt{a^2}=\sqrt{50}\\a=\sqrt{25*2}\\a=\sqrt{5^2 * 2}\\a=5\sqrt{2}\ ft$

Now,

$P = 4a\\P = 4 * 5\sqrt{2}\\=20\sqrt{2}\ ft$

Hence,

The perimeter of the square is: $20\sqrt2$ ft

Keywords: Perimeter, Pythagoras Theorem

Learn more about Square at:

#learnwithBrainly

5 0

3 years ago

Please help!! 10 extra points

Igoryamba

$HEY THERE !!$

As we know that cotx= 1/tanx

cot36° = 1/tan36°

=>cot36°= 1/0.726543

=>so cot 36°= 1.376382

So correct answer is option D.

HOPR YOU LIKED.

7 0

2 years ago

What is the value of the shown expression? 33 x 3-2 A) -54 B) -243 C) 243 D) 3

alex41 [277]

We have the following general rule for exponents: