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Luda [366]
3 years ago
15

Xy - 11 = 5 show the direct variation expalin your reasoning

Mathematics
1 answer:
Vedmedyk [2.9K]3 years ago
5 0
Hey there, Lets solve this one by one 

Firstly, a<span>dd </span>11<span> to both sides 

</span>xy=5+11 
<span>
Now, </span><span>Simplify </span><span>5+11</span><span> to </span><span>16 

</span>xy=16 
<span>
Finally, d</span><span>ivide both sides by variable </span><span>y 

</span>x = 16 /y<span>
</span>
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The perimeter of a parallelogram is 15.42 cm. The length of its sides is 2.93. What isthe lengths of its other sides?
KATRIN_1 [288]
Paaralellogram has 2 pairs of paralell sidess
therefor there are 2 pairs of sides with same legnth
perimiter=legnth+widht+legnth+width since the opposite sides ar the same sinnce paralell
perimiter=2legnth +2width

perimiter=15.42
legnth=2.93
subsitute
15.42=2(2.93)+2width
15.42=5.86+2width
subtract 5.86 from both sides
9.56=2width
divide both sides by 2
4.78

legth of ther side is 4.78 cm
6 0
3 years ago
What is the probability of tossing a coin three times and getting tails each time?
telo118 [61]

Answer:

1/8

Step-by-step explanation:

This is a compund probability problem. You need to find the probability of each event and then multiply the probabilities together.

The probability of flipping tails is 1/2. We need three of these.

1/2 x 1/2 x 1/2 = 1/8

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2 years ago
Add the complex numbers: ​ ​(-3+4i)+(7-i)
Romashka [77]
The answer is (3i+4)
5 0
2 years ago
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nydimaria [60]

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Step-by-step explanation:

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Ken started a savings account for school. He plans on spending 10% of the money he earns for leisure activities. He needs to hav
uranmaximum [27]

Answer:

$2,400

Step-by-step explanation:

Ken intends to start a savings account

10% = leisure spending

This means 90% = Expenses for school

Let us represent the amount he must save as : x

Hence in other for him to have $2,160 in his savings account, the amount Ken must earn is calculated as:

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Cross Multiply

90x = $2,160 × 100

x = ($2,160 × 100) ÷ 90

x =$2,400

Therefore, the amount Ken has to earn to have the amount needed for school is $2,400

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