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MaRussiya [10]
3 years ago
13

Point W is on line segment V X. Given VW = 4x - 7, V X = 5x + 1, and

Mathematics
2 answers:
fredd [130]3 years ago
6 0

Answer:

VW=21\ units

Step-by-step explanation:

we have that

Point W is between point V and point X

Points W,V and X are collinear

so

VX=VW+WX -----> equation A (by addition segment postulate)

we know

VX=(5x+1)\ units\\VW=(4x-7)\ units\\WX=3x\ units

substitute the given values in the equation A and solve for x

5x+1=(4x-7)+3x

Combine like terms in the right sides

5x+1=(7x-7)

Group terms that contain the same variable

7x-5x=1+7

2x=8

x=4

<em>Find the length of VW</em>

VW=(4x-7)\ units

substitute the value of x

VW=(4(4)-7)=21\ units

DIA [1.3K]3 years ago
4 0

Answer:9

Step-by-step explanation:

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13. Write an equation for the given function given the amplitude, period, phase shift, and vertical shift.
Paul [167]

Answer:

y=4sin(\frac{2\pi(t+\frac{4}{3}\pi ) }{4\pi } )-2

Step-by-step explanation:

Let's start with the original function.

y=a sin\frac{2\pi t}{T}

We can immediately fill in the amplitude 'a' and period 'T' , as the question defines these for us, and provides values for 'a' and 'T', 4 and 4\pi respectively.

y=4sin(\frac{2\pi t}{4\pi } )

Now we only have phase shift and vertical shift to do. Vertical shift is very easy, you can just add it to the end of the right side of the expression. A positive value will shift the graph up, while a negative value will move shift the graph down. We have '-2' as our value for vertical shift, so we can add that on as so:

y=4sin(\frac{2\pit }{4\pi } )-2

Now phase shift the most complicated of the transformations. Basically, it is just movement left or right. A negative phase shift moves the graph right, a positive phase shift moves the graph left (I know, confusing!). Phase shift applies directly to the x variable, or in this case the t variable. To achieve a -4/3 pi phase shift, we need to input +4/3 pi into the function, because of the aforementioned negative positive rule. Here is what the function looks like with the correct phase shift:

y=4sin(\frac{2\pi(t+\frac{4}{3}\pi ) }{4\pi } )-2

This function has vertical shift -2, phase shift -4/3 \pi, amplitude 4, and period 4\pi.

Desmos.com/calculator is a great tool for learning about how various parts of an equation affect the graph of the function, If you want you can input each step of this problem into desmos and watch the graph change to match the criteria.

8 0
3 years ago
Help ASAP Jake took out an interest-free loan of $2,401.56 from the bank to buy a car. He paid the bank $200.13 each month until
Bezzdna [24]

Answer:

<em>Answer: D. Jake paid his loan in 12 months</em>

Step-by-step explanation:

Jake took out an interest-free loan of $2,401.56 from the bank to buy a car.

Since he has to pay no interest for the loan, the monthly payments are totally used to cover the amount of the loan.

He paid the bank $200.13 each month, thus the total months needed to pay the loan is:

\frac{\$2,401.56 }{\$200.13}=12

Answer: D. Jake paid his loan in 12 months

6 0
3 years ago
I need these 2 questions answered please.​
Sav [38]

The area of the circle is 28 ft square.

The area of the triangle is 30 ft square.

Step-by-step explanation:

1) The area of the circle= π*r^2

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Here, Radius of the circle(r)= 3 ft

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2) The triangle has the base= 10 feet and height= 6 feet

The Area of the triangle= 1/2(b)(h)

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We can use x to represent the total vacation budget.
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Final Answer: the total vacation budget is $1500
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