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Greeley [361]
2 years ago
14

What is the value for x? Enter your answer in the box. X=

Mathematics
2 answers:
Mice21 [21]2 years ago
6 0

this is an isoscele triangle, AB = BC, and the angle A is equal angle C.


8y - 7 = 73

8y = 73 + 7

8y = 80

y = 80 : 8

y = 10

------------------------

the sum of the interior angles is 180°

180 - 73 - 73 = 34° (angle B)

6x + 4 = 34

6x = 30

x = 30 : 6 =

x = 5



irakobra [83]2 years ago
3 0

since this is an isosceles triangle, angle a =angle c

73 = 8y-7

add 7 to each side

80 = 8y

divide by 8

y =10

the sum of all three angles =180

<a +<b+<c = 180

73+6x+4 +73 = 180

add like terms

150 +6x = 180

subtract 150 from each side

6x = 30

divide by 6

x=5

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A napkin is folded into an isosceles triangle, triangle ABC, and placed on a plate, as shown. The napkin has a perimeter of 38 c
gavmur [86]
The area of plate which is covered by the napkin is equal to the area of folded napkin.

Before finding the area of folded napkin, we should find the dimension of the napkin.
Find the length of the leg side, the two leg has similar length.
perimeter = 38
l + l + 8 = 38
2l + 8 = 38
2l = 30
  l = 15
Each leg is 15 cm long.

Find the area of folded napkin
area = 1/2 × s × s × sin of angle between the sides
area = 1/2 × 15 × 15 × sin 30°
area = 1/2 × 15 × 15 × 1/2
area = 225/4
area = 56.25
to the nearest whole number >> 56 cm²
The answer is third option
6 0
3 years ago
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Write the equation of a circle that has a center at the origin and a radius with a length of 4 inches
VMariaS [17]

Answer:

x^2+y^2=16

Step-by-step explanation:

x^2+y^2=r^2 is the mother function of the equation of a circle centered at r with radius r

since r is defined to be 4 and 4^2 is 16 therefore, the equation would then be

x^2+y^2=16

4 0
3 years ago
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What is the number of the variable X?​
Olenka [21]

Answer:

\huge\boxed{x = -18}

Step-by-step explanation:

\frac{x-3}{3} = \frac{2x+1}{5} \\\\Cross \ Multiplying\\\\3(2x+1) = 5(x-3) \\\\Resolving \ Parenthesis\\\\6x+3 = 5x-15\\\\Combining \ like \ terms\\\\6x-5x = -15-3\\\\\bold{x = -18}

Hope this helped!

<h2>~AnonymousHelper1807</h2>
7 0
2 years ago
please help me thanks if you do :') it would also be awesome if you could explain but its ok if you can't i guess. Find x
klio [65]

Answer:

x=4\sqrt{2}\ units

Step-by-step explanation:

Theorem: In the right triangle the leg is the geometric mean of the hypotenuse and the segment of the hypotenuse adjacent to the leg.

Based on the theorem above,

x^2=2\cdot (2+6)\\ \\x^2=4\cdot 8\\ \\x^2=32\\ \\x=\sqrt{32}\ units\\ \\x=4\sqrt{2}\ units

8 0
2 years ago
What is the discriminant of the quadratic equation 2x + 5x2 = 1?
Murrr4er [49]
5x^2+2x-1=0

Delta equation is:

\Delta =\frac{-b\pm\sqrt(b^2-4ac)}{2a}

but we are interested in b^2-4ac because it determines the discriminant

5^2-4*2*(-1)=25+8=33

33>0

which means that discriminant is positive :)

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3 years ago
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