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tatiyna
3 years ago
13

Find the value of y. 4 2 √3 6 6 √3

Mathematics
1 answer:
SpyIntel [72]3 years ago
4 0

\triangle ABC\ \text{and}\ \triangle ACD\ \text{are similar. Therefore the sides of triangles}\\\text{ are in proportion:}\\\\\dfrac{y}{9+3}=\dfrac{9}{y}\qquad\text{cross multiply}\\\\y^2=(9)(12)\\\\y^2=108\to y=\sqrt{108}\\\\y=\sqrt{36\cdot3}\\\\y=\sqrt{36}\cdot\sqrt3\\\\\boxed{y=6\sqrt3}

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Which of the following expressions are equivalent to 12x+20? Select all that apply.
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Answer:

C

Step-by-step explanation:

4(3x+5) = 12x+20

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3 years ago
Write an expression using multiplication and addition with the sum of 16
Rudiy27
There are many answers for this and this is one of them:
Y = 4(3 + 1)
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Read 2 more answers
An item was sold at a loss of 20%. Had it been sold for Rs 3000more then the profit would have been 10%. What is the cost price
vagabundo [1.1K]

Answer:

Cost Price = Rs 10000

Step-by-step explanation:

Assume:

Cost of the item = x

Item was sold at a loss of 20%:

Loss = 20% of x = 0.2x

Item sold = x - 0.2x = 0.8x

Item sold at a profit of 10%:

Profit = 10% of x = 0.1x

item sold = x + 0.1x = 1.1x

Solve:

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3 0
3 years ago
Find lcm and hcf of 168 and 126​
Nuetrik [128]

Answer:

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Step-by-step explanation:

6 0
3 years ago
Jessica and Mike are making presentations for a class project. Jessica's slideshow starts with a verbal introduction that is 16
uysha [10]

Answer:

they both has 7 slides and the presentation had a duration of 28 seconds

Step-by-step explanation:

we have to setup equation that makes them equal to each other if you know what i mean. 2x+16=3x+10

then we just solve for x

2x+16=3x+10

subtract 10 from each side

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so both of their presentations are 7 slides long

then to find the length of their presentations we just plug in 6 to one of the equations

2(6)+16

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2 years ago
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