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Levart [38]
3 years ago
15

The variables y and x have a proportional relationship, and y = 7 when x = 2. What is the value of y when x = 5? Enter your answ

er in the box.
Mathematics
1 answer:
Delvig [45]3 years ago
4 0
If y=7 and x=2 and you change x to equal 5, y would now be 10.

x=5
y=10
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4*8- -----------------
alexgriva [62]

Answer:

32

Step-by-step explanation:

4 × 8 - 32

Hence, 32 is the required answer.

3 0
2 years ago
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Find the domain of the inverse function, q−1(x). Express your answer as an inequality.
Xelga [282]

Hello from MrBillDoesMath!

Answer:

x >=4

Discussion:

The inverse of q is

-1 +\-  (x-4)^(1/4)                             (the fourth root of x-4)


(Inverse found by solving  x= (y+1)^4 +4 for y)

The domain of the inverse is therefore x such that x -4 >=0 , i.e. x >=4


Regards,  

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P.S.  I'll be on vacation from Friday, Dec 22 to Jan 2, 2019. Have a Great New Year!


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3 years ago
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stira [4]
If all the angles add up to 90 degrees then you can set the equation 7x-9*2x=90
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4 0
2 years ago
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Look at the triangle show on the right. The Pythagorean Theorem states that the sum of the squares of the legs of a right triang
Vladimir [108]

Answer:

cos^2\theta + sin^2\theta = 1

Step-by-step explanation:

Given

(\frac{b}{r})^2  + (\frac{a}{r})^2

Required

Use the expression to prove a trigonometry identity

The given expression is not complete until it is written as:

(\frac{b}{r})^2  + (\frac{a}{r})^2  = (\frac{r}{r})^2

Going by the Pythagoras theorem, we can assume the following.

  • a = Opposite
  • b = Adjacent
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So, we have:

Sin\theta = \frac{a}{r}

Cos\theta = \frac{b}{r}

Having said that:

The expression can be further simplified as:

(\frac{b}{r})^2  + (\frac{a}{r})^2  = 1

Substitute values for sin and cos

(\frac{b}{r})^2  + (\frac{a}{r})^2  = 1 becomes

cos^2\theta + sin^2\theta = 1

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3 years ago
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AysviL [449]

Answer:

A

Step-by-step explanation:

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