1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ehidna [41]
3 years ago
9

Mr. Lim and Mr. Tay had $31 090 at first.Mr. Lim donated $2390 of his money and Mr. Tay spent half of his money on a holiday tri

p. As a result, Mr. Lim had 3 times as much money as Mr. Tay. How much money did Mr. Lim have at first?
Mathematics
2 answers:
hjlf3 years ago
7 0

Answer:

Mr.Lim had 19,610 dollars, and Mr.Tay had 1,1480 dollars at first.

andriy [413]3 years ago
3 0

Answer:

Mr.Lim had 19610 dollars, and Mr.Tay had 11480 dollars at first.

Step-by-step explanation:

You might be interested in
Find an equation of the sphere with center (4, −12, 8) and radius 10. use an equation to describe its intersection with each of
xxMikexx [17]
<span>Sphere: (x - 4)^2 + (y + 12)^2 + (z - 8)^2 = 100 Intersection in xy-plane: (x - 4)^2 + (y + 12)^2 = 36 Intersection in xz-plane: DNE Intersection in yz-plane: (y + 12)^2 + (z - 8)^2 = 84 The desired equation is quite simple. Let's first create an equation for the sphere centered at the origin: x^2 + y^2 + z^2 = 10^2 Now let's translate that sphere to the desired center (4, -12, 8). To do that, just subtract the center coordinate from the x, y, and z variables. So (x - 4)^2 + (y - -12)^2 + (z - 8)^2 = 10^2 (x - 4)^2 + (y - -12)^2 + (z - 8)^2 = 100 Might as well deal with that double negative for y, so (x - 4)^2 + (y + 12)^2 + (z - 8)^2 = 100 And we have the desired equation. Now for dealing with the coordinate planes. Basically, for each coordinate plane, simply set the coordinate value to 0 for the axis that's not in the desired plane. So for the xy-plane, set the z value to 0 and simplify. So let's do that for each plane: xy-plane: (x - 4)^2 + (y + 12)^2 + (z - 8)^2 = 100 (x - 4)^2 + (y + 12)^2 + (0 - 8)^2 = 100 (x - 4)^2 + (y + 12)^2 + (-8)^2 = 100 (x - 4)^2 + (y + 12)^2 + 64 = 100 (x - 4)^2 + (y + 12)^2 = 36 xz-plane: (x - 4)^2 + (y + 12)^2 + (z - 8)^2 = 100 (x - 4)^2 + (0 + 12)^2 + (z - 8)^2 = 100 (x - 4)^2 + 12^2 + (z - 8)^2 = 100 (x - 4)^2 + 144 + (z - 8)^2 = 100 (x - 4)^2 + (z - 8)^2 = -44 And since there's no possible way to ever get a sum of 2 squares to be equal to a negative number, the answer to this intersection is DNE. This shouldn't be a surprise since the center point is 12 units from this plane and the sphere has a radius of only 10 units. yz-plane: (x - 4)^2 + (y + 12)^2 + (z - 8)^2 = 100 (0 - 4)^2 + (y + 12)^2 + (z - 8)^2 = 100 (-4)^2 + (y + 12)^2 + (z - 8)^2 = 100 16 + (y + 12)^2 + (z - 8)^2 = 100 (y + 12)^2 + (z - 8)^2 = 84</span>
6 0
3 years ago
The area of the shaded region in the shape to the right
larisa86 [58]
Oof this one is hard I think it’s 20 mm but I’m not sure
3 0
3 years ago
Write the next 3 numbers in the pattern. 3,2,5,4,7,
Kipish [7]
6,9,8 hope you have a great day :D
3 0
2 years ago
Solve by elimination <br> X - 6y + 2z = 5<br> 2x-3y+z=4<br> 3x + 4y - z = -2
Vesnalui [34]

Answer:

x=1

y=-3

z=-7

Step-by-step explanation:

6 0
2 years ago
What triangle congruence postulate would you use to prove these triangles are congruent.
masha68 [24]
Ssssssssssssssssssssss
5 0
2 years ago
Read 2 more answers
Other questions:
  • Alysha is two years younger than Bryce. The sum of theirs ages is 28. How old is Alysha
    11·1 answer
  • Compare 9 ⋅ 104 to 3 ⋅ 102.
    15·2 answers
  • What is the value of x?
    15·1 answer
  • Conducting financial transactions through the internet on your cell phone is known as
    10·2 answers
  • Cel mai mic numar impar rotunjit la mii
    11·1 answer
  • 3/5 divided by 1 1/4
    15·1 answer
  • Identify the base in this statement:<br> 16% of 98 is 15.68
    12·1 answer
  • 160% of 1825 rounded to nearest tenth
    7·2 answers
  • Find the equation to the line below .
    14·1 answer
  • Ava has a jewelry box in the shape of a pentagonal prism.
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!