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2 years ago

Find the value of y. 5 8 4 2 50 Pts!

Mathematics

2 answers:

Vinvika [58]2 years ago

8 0

Answer and Explanation:

Since this is a 30-60-90 triangle, you can use the ratio of side lengths specific to this type of triangle:

x = 4√(2)

y = 2(4) = 8

because where 4 = T,

x = T√2 and y = 2T

so again:

$x = 4\sqrt{2}\\y = 8$

AfilCa [17]2 years ago

4 0

Answer:

B. 8.

Step-by-step explanation:

All answers verified:

A. 5. Incorrect. 5 is not long enough for y.
B. 8. Correct. Just the right size for y.
C. 4. Incorrect. 4 is already in there, so this is incorrect.
D. 2. Incorrect. Not even close to fit y.

Your answer is B.

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Find all x-intercepts and y-intercepts of the graph of the function. F(x)=x³-4x² - 4x + 16

Lady bird [3.3K]

Answer: (0;16) (4;0) (2;0) (-2;0).

Step-by-step explanation:

Y-intercepts of the graph of the function F(x)=x³-4x² - 4x + 16:

$x=0\\F(x)=0^3-4*0^2-4*0+16\\F(x)=16.\\Hence,\ (0;16).$

X-intercepts of the graph of the function F(x)=x³-4x² - 4x + 16:

$F(x)=0\\0=x^3-4x^2-4x+16\\0=(x^3-4x^2)-(4x+16)\\0=x^2*(x-4)-4*(x-4)\\0=(x-4)*(x^2-4)\\0=(x-4)*(x^2-2^2)\\0=(x-4)*(x-2)*(x+2)\\x-4=0\\x_1=4.\\Hence,\ (4;0)\\x-2=0\\x_2=2.\\Hence,\ (2;0)\\x+2=0\\x_3=-2.\\Hence,\ (-2;0).$

8 0

1 year ago

The diameter of each wheel of a bicycle is 27 inches. If you are traveling at a speed of 20 miles per hour on this bicycle, thro

klasskru [66]

Notice, you've got a diameter in inches
and a linear velocity in miles
thus, you'd need to convert first

$\bf v=rw\implies \cfrac{v}{r}=w\qquad 
\begin{cases}
v=\textit{linear speed}\\
r=radius\\
w=\textit{angular speed}\\
 --------------\\
v=20\frac{mi}{h}\\
r=\frac{diameter}{2}=\frac{27}{2}
\end{cases}
\\\\
\textit{now, converting 20miles to inches}
\\\\
\cfrac{20mi}{h}\cdot \cfrac{5280ft}{mi}\cdot \cfrac{12in}{ft}\implies \cfrac{20\cdot 5280\cdot 12\ in}{h}\impliedby v
\\\\\\
\cfrac{1267200\frac{in}{h}}{\frac{27}{2}in}=w$

now, whatever that is, you'll need to divide it by a revolution, recall, a revolution is $2\pi$
thus $\bf \cfrac{\qquad \boxed{\cfrac{1267200\frac{in}{h}}{\frac{27}{2}in}}\qquad }{2\pi }=revolutions$

7 0

3 years ago

Read 2 more answers

large cheese pizzas cost $5 each and large one topping pizzas cost $6 each. write an equation that represents the total cost, T

Gelneren [198K]

Answer:

T = 5c +5d, where unit of the equation is $.

Step-by-step explanation:

Cost of 1 large cheese pizza = $5

No. of large cheese pizza = c

therefore

cost of c large cheese pizza = c*Cost of 1 large cheese pizza = $5c

Cost of 1 large one topping pizza = $6

No. of large one topping pizza = d

therefore

cost of d large one topping pizza = d*Cost of 1 large one topping pizza = cost of d large one topping pizza = $6d

Total cost of c large cheese pizza and cost of d large one topping pizza

= $5c +$6d

total cost is represented by T

thus, T = $5c +$5d Answer

4 0

3 years ago

What does the product (-5-2i)(3+7i) equal

Marina CMI [18]

This in what I got:
(-7i)(10i)
-70i

8 0

3 years ago

Which of the following is an example of an improper fraction?

sergey [27]

Improper fractions are called such because the numerator is greater than the denominator. The only way it can be simplified is through a mixed fraction.

c) 10/3 is the improper fraction.

10/3 is simplified into 3 1/3.

6 0

3 years ago