3 years ago

Find the value of y. 4 2 √3 6 6 √3

1 answer:

4 0

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

You might be interested in

Find the gain percent in the following: Cost Price Rs 280, (a) Selling Price Rs 290

Nikolay [14]

Answer:

3.57

Step-by-step explanation:

P=SP -CP

=290-280=10

P%= $\frac{P*100}{CP}$

= $\frac{10*100}{280}$

= $\frac{1000}{280}$

=3.57

4 0

3 years ago

The subtraction property of equality states that the two sides of an

yawa3891 [41]

Answer:

False

Step-by-step explanation:

The answer is in its name. Its a property of equality meaning it makes sure that both sides are equal to each other

3 0

2 years ago

40,000 is 10 times as much as

Dimas [21]

40,000 is 10 times as much as 4,000

3 0

3 years ago

For what value of x is line a parallel to line b? (Yo, please help me so I can go to sleep.)

iogann1982 [59]

X=20

If they're parallel the other number in the same spot as 5x+15 equals that, so 5x+15=115 because if they are parallel they're the same if same spot and same line going through them.

115-15 = 100
5x=100
Divide by 5 both sides
X=20

If x=20 then these lines would be parallel

6 0

3 years ago

Tan (30)=14/x need for big ideas assignment

Ann [662]

Step-by-step explanation:

tan30 = 14/x

x = 14tan30

x = -89.7

7 0

3 years ago