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Irina18 [472]
3 years ago
12

Once upon a time, a queen sent out three servants to buy gems for her treasury. The first servant paid $112,000 for 2 diamonds a

nd 1 ruby. The second servant paid $127,000 for 2 diamonds, 3 emeralds, and 1 ruby. The third servant paid $62,000 for 1 diamond and 2 emeralds. The diamonds all cost the same amount, the rubies all cost the same amount, and the emeralds all cost the same amount. How much did each kind of gem cost the queen?
Mathematics
1 answer:
Lina20 [59]3 years ago
4 0
_Does anyone wann help me wit something ill give you bloxburg (from ro _blox) money if u know how to do it!And yes it’s math _4
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The sum of two numbers is 12. The difference of the same two numbers is −4. Find the two numbers.
Butoxors [25]

Answer:

  4 and 8

Step-by-step explanation:

Let 'a' represent one of the numbers. Then the other is 12-a, and their difference is ...

  a - (12-a) = -4

  2a = 8 . . . . add 12

  a = 4 . . . . . divide by 2

  12-a = 8 . . . . find the other number

The two numbers are 4 and 8.

7 0
3 years ago
Read 2 more answers
What is the vertex of the quadratic function f(x) = (x – 8)(x – 2)?
LekaFEV [45]
Something funny is that the x value of the vertex lies directl in the middle of the x intercepts
so
we see the x intercepts or 0's at x=8 and 2
the average is x=5
so find f(5) to find the y value of the vertex
f(5)=(5-8)(5-2)
f(5)=(-3)(3)
f(5)=-9

vertex is at (5,-9)

the actual way the teacher wants is to expand then compltete the square to get into the form f(x)=a(x-h)^2+k where the vertex is (h,k)
but whatever


verrtex is at (5,-9)
7 0
4 years ago
A new vaccine claims to reduce the risk of contracting chickenpox from 80% to 20%. Which of the following statements is true reg
dlinn [17]

Answer:

  • The vaccine decreases the risk of contracting chickenpox by 75 percentage

Step-by-step explanation:

Risk of contracting chickenpox is reduced from 80% to 20%.

<u>This reduction in percentage is:</u>

  • (80 - 20)/80*100% = 75%

<u>Correct choice is:</u>

  • The vaccine decreases the risk of contracting chickenpox by 75 percentage
6 0
3 years ago
Im so lost, please help me asap
almond37 [142]

Answer:

it's so simple ....

x + 141 = 135

x = 135 - 141

x = -6

it means ur answer is a

8 0
3 years ago
Hey can you please help me posted picture of question
Naddika [18.5K]
The correct answer is option D

The solution is shown below:

x^{2} +16 \\  \\ &#10;= x^{2} +(4)^{2} \\  \\ &#10;= x^{2} -(-1)(4)^{2}   \\  \\ &#10;= x^{2} -i^{2} (4)^{2} \\  \\ &#10;= x^{2} -(4i)^{2} \\  \\ &#10;=(x+4i)(x-4i)&#10;
6 0
3 years ago
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