All categories

4 years ago

What is the value of y ?

Mathematics

1 answer:

tia_tia [17]4 years ago

4 0

Answer:

Step-by-step explanation:

Chords within a circle are proportional. Proportional means that they form equal ratios. To solve for y, set up a proportion.

The ratios we will create will be $\frac{long}{short} =\frac{long}{short}$ where each long and short form an angle.

So write:

$\frac{12}{8} =\frac{y}{4}$

To solve, cross multiply numerator with denominator.

12(4) = 8(y)

48=8y

6=y

You might be interested in

The line graph on the y-axis is parallel to the x-axis, 3rd quadrant point, and an open downward parabola.

Ksivusya [100]

Answer:

$(x + 5) {}^{2} = - 12(y - 1)$

5 0

3 years ago

Square Root

Oxana [17]

Answer:

1). $(x+\frac{1}{4})^{2}=\frac{4}{9}$

2). $x+\frac{1}{4}=\pm \frac{2}{3}$

Step-by-step explanation:

Here the given equation is $x^{2}+\frac{1}{2}x+\frac{1}{16}=\frac{4}{9}$

We have to factor the perfect square trinomial on the left side of the equation

So left side of the equation is $x^{2}+\frac{1}{2}x+\frac{1}{16}$

= $x^{2}+2\times \frac{1}{4}x+(\frac{1}{4})^{2}$

$=(x+\frac{1}{4})^{2}$ since [(a+b)²= a²+b²+2ab]

Therefore the factorial form of the equation will be

$(x+\frac{1}{4})^{2}=\frac{4}{9}$

Now we have to solve the equation by applying square root property

$\sqrt{(x+\frac{1}{4})^{2}}=\sqrt{\frac{4}{9}}$

$x+\frac{1}{4}=\pm \frac{2}{3}$

5 0

3 years ago

Read 2 more answers

Is this graph a function?

inysia [295]

Sur it's a function because for each x value corresponds one and only one y value.

Another easy way to determine if y is a function is to apply the vertical test:

If you draw a vertical line and this lines intersects the graph in one point, then y is a function

8 0

3 years ago

Find a function that describes the sequence. Use y for the term in the sequence and n for its place in the list. Then use the fu

sammy [17]

B. y=n+20; 25,26,27 because if you plug in 1 into the equation it equals 21. 2+20=22, etc. so to find the next three terms of the equation plug in 5: y=5+20=25; plug in 6: y=6+20=26; and plug in 7: y=7+20=27

6 0

3 years ago

I need help on question 3

BlackZzzverrR [31]

Answer:

Step-by-step explanation:

21-3^2+2

3 to the second power is 9

then, 21 - 9 + 2

left to right.....

21 - 9 = 12

12+2=14

4 0

3 years ago