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mihalych1998 [28]
3 years ago
5

Find two mixed numbers so that the sum is 15 3/10 and the difference is 8 5/10

Mathematics
1 answer:
Juliette [100K]3 years ago
8 0
11 9/10 and 3 2/5

\left \{ {{ 11\frac{9}{10}+3\frac{2}{5}=15\frac{3}{10}} \atop { 11\frac{9}{10}-3\frac{2}{5}=8\frac{5}{10}}} \right.

To solve for this, you can create a series of two equations
\left \{ {{y+x=15 \frac{3}{10} } \atop {y-x= 8\frac{5}{10} }} \right.

After that, you solve one of the equations for x and plug it into the other equation.
\left \{ {{x=15 \frac{3}{10}-y } \atop {y-x= 8\frac{5}{10} }} \right.

{2y-15 \frac{3}{10}= 8\frac{5}{10}

Then, solve for variable y
{2y=23 \frac{8}{10}
{y=11\frac{9}{10}

Then, you plug in this value for y into one of the original equations

11\frac{9}{10}+x=15 \frac{3}{10}

x=15 \frac{3}{10} -11\frac{9}{10}

x=3 \frac{2}{5}
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For example, for LCM (12,30) we find:

Using the set of prime numbers from each set with the highest exponent value we take 22 * 31 * 51 = 60. Therefore LCM (12,30) = 60.

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3 years ago
What is71 3/4 over 100 as a decimal<br><br><br> pls explain
lora16 [44]

Answer:

3 71/100 = 3.71

Step-by-step explanation:

To convert this mixed number (fraction) to a decimal just follow these two steps:

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Step 2: add this value to the the integer part: 3 + 0.71 = 3.71. So,

3 71/100 = 3.71

7 0
2 years ago
Read 2 more answers
Kelvin plans to buy potato chips and coke with $50. If he buys 3 packs of potato chips and 2 cans of coke, $9 will be left. If h
Delicious77 [7]
Let the prices of a pack of potato chips and can of coke be x and y respectively
3x+2y=50-9
3x+2y=41........... (1)
4x+5y=50+21
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Multiply (1) with 4 and (2) with3
12x+8y=164
12x+15y=213
On subtracting above eqs. we get
7y= 49
y=7
Putting value of y in (2)
4x+5(7)=71
4x+35=71
4x=36
x=9
x=$9
y=$7
MARK IT BRANLIEST PLZZZ....

7 0
3 years ago
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Item 1 Solve the system of linear equations by graphing. 5x+5y=15 2x−2y=10
Marysya12 [62]

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6 0
3 years ago
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