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miv72 [106K]
3 years ago
10

Here is a riddle: “I am thinking of two numbers that add up to 5.678. The difference between them is 9.876. What are the two num

bers?”
The riddle can be represented with two equations. Write the equations
Mathematics
2 answers:
Svetradugi [14.3K]3 years ago
6 0

Answer:  

X + Y = 5.678

X - Y = 9.876

The two numbers: X = 7.777   Y = -2.099

Step-by-step explanation: solve by elimination

X + Y = 5.678

X - Y = 9.876 . Add the two equations so the y cancels. Solve for x

2x = 15.554 .  Divide both sides by 2

X = 7.777    Substitute in the original equations to find Y

7.777 + y = 5.678 . Subtract 7.777 from both sides

Y = - 2.099

check in the second equation:

7.777 -(-2.099) = 9.876

7.777 + 2.099 = 9.876 <u>True</u>

Bumek [7]3 years ago
4 0

Answer

:X + Y = 5.678

X ± 9.876 = Y

Step-by-step explanation:

needed points

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A rectangle hale card has a length of 3/10 and a width of 4/5 find the perimeter
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Step-by-step explanation:

To find the perimeter, add all sides together. Since it's a rectangle, the other sides are the same measurement as the ones given. Add 3/10, 3/10, 4/5, and 4/5 together. To do this, find a common denominator. The lowest common denominator is 10 so multiply the 4/5 by 2/2 to get the denominator to be 10. Now, add 3/10, 3/10, 8/10, and 8/10. It adds up to 22/10 but if you don't want an improper fraction, simplify it to 2 and 1/5.

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3 years ago
Hoping someone will help me out
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Read 2 more answers
Please help me with my homework idk if it is right or wrong
jeka57 [31]
Q1: 7×6 = 42
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3 years ago
What’s the answer to this?
Elina [12.6K]

Step-by-step explanation:

Line is passing through the points:

(-2,\:3)=(x_1,\:y_1) \:\&\: (2,\:5)=(x_2 ,\:y_2)

Equation of line in two point form is given as:

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4 0
3 years ago
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