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3 years ago

Can you find the y variable?

Mathematics

1 answer:

ELEN [110]3 years ago

3 0

Answer:

$\large\boxed{y=27}$

Step-by-step explanation:

Look at the picture.

ΔADC and ΔCDB are similar (AA). Therefore the sides are in proportion:

$\dfrac{AD}{DC}=\dfrac{DC}{DB}$

We have:

$AD=12,\ DC=18,\ DB=y$

Substitute:

$\dfrac{12}{18}=\dfrac{18}{y}$ cross multiply

$12y=(18)(18)$

$12y=324$ divide both sides by 12

$y=27$

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2. A bag contains 25 paise coins and 50 paise Coins. The number of 25 paise coins is 6 times that of so paise Coins The total va

Karo-lina-s [1.5K]

<h2>~Solution :-</h2>

Here, it is given that the bag contains 25 paise coins and 50 paise coins in which, 25 paise coins are 6 times than that of 50 paise coins. Also, the total money in the bag is Rs. 6.

Hence, we can see that, here, we have been given the linear equation be;

Let the number of coins of 50 paise will be $ x $ and the number of coins of 25 paise will be $ 6x $ as given. . .

Hence,

$x + 6x = 6$

$7x = 6$

$x = \frac{6}{7} \\$

$x = 1.1666667 \approx \: 2$

Hence, the number of 50 paise coins will be 2. And, 6 times of two be;

$6(2)$

Hence, the number of 25 paise coins will be 12.

6 0

3 years ago

3 + 4 = ? וא 2/3+2/4

Elina [12.6K]

Answer:

1. 7

2. 17/12 can be a mixed number

8 0

3 years ago

HELP PLEASE!! i seriously need help

Alex73 [517]

Answer:

24 and 28

Step-by-step explanation:

just keep adding 4 and you will get these 2 numbers between 20-30

6 0

4 years ago

The expressions a(8x+7) and 4x+3.5 are equivalent. What is the value of a?

valentina_108 [34]

Answer:

a=1/2

Step-by-step explanation:

From the question, the expression a(8x+7) is equivalent to 4x+3.5

Which means that multiplying 8x by a gives 4x and multiplying 7 by a gives 3.5

So, we can write the following to find the value of a

$a(8x+7)\equiv 4x+3.5$

we can write the following

8ax=4x

$\implies a=\frac{4x}{8x}= \frac{1}{2}$

Hence the value of a is 1/2

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3 years ago

Express 8^3/4 in simplest radical form

erma4kov [3.2K]

Answer:

$\sqrt[4]{8^{3} }$

Step-by-step explanation:

8**(3/4) = 8**(3 * 1/4) = $\sqrt[4]{8^{3} }$

6 0

3 years ago

Can you find the y variable? ​

Can you find the y variable?