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Alexandra [31]
2 years ago
9

Please help i am panicking

Mathematics
1 answer:
vaieri [72.5K]2 years ago
5 0

Answer:

C

Step-by-step explanation:

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What is the measure of angle B in the triangle?
pentagon [3]

Answer: Angle B measures 70 degrees

Step-by-step explanation: One angle is given as 40 while the other two angles are yet unknown.

Remember that the sum of the interior angles in a triangle equals 180 degrees. In other words

Angle A + Angle B + Angle C = 180

Therefore

40 + (2x - 30) + (x + 20) = 180

40 + 2x - 30 + x + 20 = 180

By collecting like terms we have

40 - 30 + 20 + 2x + x = 180

30 + 3x = 180

Subtract 30 from both sides of the equation

3x = 150

Divide both sides of the equation by 3

x = 50

Having calculated x = 50 we can now compute the value of angle B as follows;

When x = 50,

2x - 30 becomes

2(50) - 30

= 100 - 30

= 70.

Angle B measures 70 degrees

8 0
3 years ago
4000 dollars is placed in an account with an annual interest rate of 5.25%. How much will be in the account after 17 years, to t
dezoksy [38]
5.25% of 4000 is 210, multiplied by 17 is 3570, plus the initial 4000 comes to $7570.00
3 0
3 years ago
Write the equation of this circle in standard form
Svetradugi [14.3K]

Answer:

Standard equation of this circle is (x +5)² + y² = 9.

Step-by-step explanation:

The equation of a circle with center at (h,k) and a radius of r is:

(x - h)² + (y - k)² = r²

Subtitute the variables with h= -5, k = 0, and r = 3

(x - (-5))² + (y - 0)² =3²

(x + 5)² + y² = 9

Pls mark as brainliest...

8 0
3 years ago
Graph the equation.
Natalija [7]

Answer:

69

Step-by-step explanation:

nice ;)

7 0
2 years ago
Help: Scientists think the _____ is a solid iron with a layer of liquid iron surrounding it.
Alex_Xolod [135]
<span>The inner core is made of solid iron, and it is surrounded by the liquid iron of the outer core. It is solid because the extreme pressure at the center of the earth prevents it from melting, despite the unimaginable temperatures.</span>
3 0
3 years ago
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