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svlad2 [7]
3 years ago
15

Which ordered pair is a solution of the equation y=3x?

Mathematics
1 answer:
lawyer [7]3 years ago
6 0
Answer <span>D- (-10, -30)

y = 3x
-30 = 3(-10)
-30 = -30</span>
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3 0
3 years ago
Find an asymptote of this conic section. 9x^2-36x-4y^2+24y-36=0
ki77a [65]
We will begin by grouping the x terms together and the y terms together so we can complete the square and see what we're looking at. (9x^2-36x)-(4y^2+24y)-36=0.  Now we need to move that 36 over by adding to isolate the x and y terms.  (9x^2-36x)-(4y^2+24y)=36.  Now we need to complete the square on the x terms and the y terms.  Can't do that, though, til the leading coefficients on the squared terms are 1's.  Right now they are 9 and 4.  Factor them out: 9(x^2-4x)-4(y^2-6y)=36.  Now let's complete the square on the x's. Our linear term is 4.  Half of 4 is 2, and 2 squared is 4, so add it into the parenthesis.  BUT don't forget about the 9 hanging around out front there that refuses to be forgotten.  It is a multiplier.  So we are really adding in is 9*4 which is 36.  Half the linear term on the y's is 3.  3 squared is 9, but again, what we are really adding in is -4*9 which is -36.  Putting that altogether looks like this thus far: 9(x^2-4x+4)-4(y^2-6y+9)=36+36-36.  The right side simplifies of course to just 36.  Since we have a minus sign between those x and y terms, this is a hyperbola.  The hyperbola has to be set to equal 1.  So we divide by 36.  At the same time we will form the perfect square binomials we created for this very purpose on the left: \frac{(x-2)^2}{4}- \frac{(y-3)^2}{9}=1.  Since the 9 is the bigger of the 2 values there, and it is under the y terms, our hyperbola has a horizontal transverse axis.  a^2=4 so a=2; b^2=9 so b=3.  Our asymptotes have the formula for the slope of m=+/- \frac{b}{a} which for us is a slope of negative and positive 3/2.  Using the slope and the fact that we now know the center of the hyperbola to be (2, 3), we can solve for b and rewrite the equations of the asymptotes.  3= \frac{3}{2}(2)+b give us a b of 0 so that equation is y = 3/2x.  For the negative slope, we have 3=- \frac{3}{2}(2)+b which gives us a b value of 6.  That equation then is y = -3/2x + 6.  And there you go!
8 0
3 years ago
It was recommended that students drink 48 or more ounces of water. How
azamat

A histogram is used to show the frequency of data, where the length of the bar represents the frequency.

<em>50 students drank the recommended amount of water.</em>

The recommended amount is given as:

Amount \ge 48

See attachment for histogram.

From the histogram, we have the following observations

  • <em>The lengths of all bars of the histogram are less than 48, except one.</em>
  • <em>The length of the bar above 48 is 50.</em>

<em />

This means that:  50 students drank the recommended amount of water.

<em>Hence, the number of students is 50</em>

Read more about histograms at

brainly.com/question/24577156

8 0
3 years ago
Please help me with this
My name is Ann [436]

Just do 72 - 9 = 63

Hope this helps

4 0
3 years ago
Read 2 more answers
The lengths of the sides of a rectangle are consecutive prime numbers. The area of the rectangle is represented by a three-digit
PIT_PIT [208]

Answer:

Perimeter = 72

Step-by-step explanation:

<u>Mathematics Puzzle</u>

The area of a rectangle is the product of the base and the height

A=b.h

We know the base and the height are two consecutive prime numbers, not much of useful information so far.

We also know the area is composed only of the two smallest prime digits. Those digits are 2 and 3. If the number is reversed and it's not changed, then we only have two possible values for the area: 232 and 323.

We only need to find two consecutive prime numbers which product is one of the above. The number 232 has no prime factors: 232 = 8*29.

The number 323 is the product of 17 and 19, two consecutive prime numbers, thus the dimensions of the rectangle are 17 and 19.

The perimeter of that rectangle is 2*17+2*19= 72

8 0
3 years ago
Read 2 more answers
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