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stiv31 [10]
3 years ago
7

8x+2y=-2 y=-5x+1 Solve for x and y

Mathematics
2 answers:
Alexandra [31]3 years ago
8 0
That should be how you would solve the problem! Hope that helps:)

sp2606 [1]3 years ago
5 0
X = 2
y = -9
16 - negative 18 = -2

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selim is ordering concrete spheres to place as barriers in the city park. the spheres cost $2 per square foot, and selim can spe
hoa [83]

The maximum diameter of the spheres he can purchase is  1. 78 ft. Option C

<h3>How to determine the diameter</h3>

The formula for area of a sphere is expressed as;

Area = 4 πr²

If Selim paid $2 per square foot and have a maximum of $20 per square

The area he can purchase is;

= $20/$2

= 10$

Substitute the value into the formula

10 = 4πr²

10 = 4 × 3. 142 ×  r²

10 = 12. 568r²

Make 'r²' the subject

r² = 10/ 12. 568

r² = 0. 79

Find the square root of both sides

r = √0. 79

r = 0. 89

But diameter = 2(radius)

Diameter = 2 × 0. 89 = 1. 78 ft

Thus, the maximum diameter of the spheres he can purchase is  1. 78 ft. Option C

Learn more about spheres here:

brainly.com/question/10171109

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8 0
1 year ago
The drama club has sold 942 tickets to their play if their theater seats 57 in each row how many full rows were there be how man
kotegsom [21]
999 if you are adding
8 0
3 years ago
Find the exact values of cos 3 pi/4 radians sin 3 pi/4 radians HELP!
bixtya [17]
In degrees: 3π/4 radians = 135°
Angle of x=135° is in the 2nd Quadrant and has negative cos x values and positive sin x values.
cos 135° = cos ( 90° + 45°)= - sin 45° =- \frac{ \sqrt{2} }{2}
sin 135° = sin ( 90° + 45° ) = cos 45° =\frac{ \sqrt{2} }{2}. You can also see the graph in the attachment. 
Download docx
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3 years ago
Of the 9 people attending a lecture, 3 have green eyes.
nadya68 [22]
The probability is 1/3
4 0
2 years ago
Do you know these Answers plz??????
erik [133]

Answer:

d c a

Step-by-step explanation:

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3 years ago
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