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k0ka [10]
2 years ago
11

Help please...........

Mathematics
1 answer:
Snezhnost [94]2 years ago
4 0

Answer:

66.42° for Y

23.58° for Z

90° for X

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The discount on a new stereo was $180. This was a discount of 18%. What was the original selling price?
vladimir2022 [97]

Answer:

$212.40

Step-by-step explanation:

180+ (180* 18%)= Total Cost

180+ 32.40= Total Cost

212.40= Total Cost

8 0
2 years ago
The volume of a cuboid is 2160cm3. The length is 12cm and the width is 150mm. Work out the height of the cuboid in cm.
White raven [17]

Answer:

12 cm

Step-by-step explanation:

12x15 (150)

2160/180

= 12 cm

8 0
2 years ago
The popular online game "Among Us" costs $5.00 to install the game on a computer. Players can pay
ra1l [238]
It cost 5 per game , hope it helps
3 0
3 years ago
Consider the equation x2+4x+9=0 in standard form. Which equation shows the coefficients a, b, and c correctly substituted into t
Afina-wow [57]

Answer:

<h2>x = -2+i√5 and  -2i-√5</h2>

Step-by-step explanation:

The general form of a quadratic equation is ax²+bx+c = 0

Given the quadratic equation x²+4x+9=0 in its standard form, on comparing with the general equation we can get the value of the constant a, b and c as shown;

ax² = x²

a = 1

bx = 4x

b = 4

c = 9

The quadratic formula is given as x = -b±√(b²-4ac)/2a

Substituting the constant;

x = -4±√(4²-4(1)(9))/2(1)

x = -4 ±√(16-36)/2

x = -4±√-20/2

x = -4±(√-1*√20)/2

Note that √-1 = i

x = -4±(i√4*5)/2

x = (-4±i2√5)/2

x = -4/2±i2√5/2

x = -2±i√5

The solution to the quadratic equation are  -2+i√5 and  -2i-√5

5 0
3 years ago
In a triangle, what is true about the sum of the lengths of any two sides of the triangle?
irakobra [83]
It will be greater than the length of the third side always
4 0
3 years ago
Read 2 more answers
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