1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
chubhunter [2.5K]
2 years ago
10

For what value of “a”are the graphs of 5y = -2x + 10 and 3y = aX- 15 parallel

Mathematics
1 answer:
Pie2 years ago
8 0

Answer:

a = -6/5

Step-by-step explanation:

For the graphs to be parallel the graphs should have same slope(m)

So we rewrite both our equations in the slope-intercept form then compare the slope to find the value of a like this,

y=mx+b

This equation is the slope-intercept form we convert both our equations in this form firstly taking equation 1

5y=-2x+10\\\\y=\frac{-2x+10}{5} \\\\y=\frac{-2}{5}x+\frac{10}{5} \\\\y=\frac{-2}{5}x+2

so if we compare it with y = mx + b the coefficient of x is m and hence

m= -2/5 now solving for equation 2

3y=ax-15\\\\y=\frac{ax-15}{3} \\\\y=\frac{ax}{3}-\frac{15}{3}  \\\\y=\frac{a}{3}x-5\\\\

so here if we compare it with y = mx + b the coeffienct of x is a/3 so since parallel lines have same slope by the formula:

m_1=m_2

we equation both the slope to each other to find the value of a like this,

m_1=m_2\\\\\frac{-2}{5}=\frac{a}{3}\\\\-2(3)=a(5)\\\\-6=5a\\-6/5=a

so the value of a equals

a= -6/5

You might be interested in
If u=f(x,y) where x=(e^s)(cos(t)) and y=(e^s)(sin(t)), show that (du/dx)^2 + (du/dy)^2 = (e^(-2s))((du/ds)^2+(du/dt)^2)) ...?
andreyandreev [35.5K]

no usually the problem is set up this way f(x,y)= z if z= w/e ( it has an x and a y) where y= (something that has s and t) and x= ( something that has s and t) but your question does not make sense to me. Are you sure you wrote it right?


8 0
3 years ago
Find the length of the midsegment of the given trapezoid.
stellarik [79]

Answer:

D) 5.2

Step-by-step explanation:

1/2 x (4.5 + 5.9) = 5.2

6 0
3 years ago
Read 2 more answers
Find the surface area. Round to the nearest tenth.
Anton [14]

Answer:

66.4 in^2

Step-by-step explanation:

Surface area is defined as the area around the surface of a 3-dimensional solid. The shape we are given here is a triangular prism with a square base. This means it contains one square and 4 triangles on the surface. To find the surface area, we just need to find the areas of all 5 surface shapes and add them up. We have been given that the square has a side length of 4 inches, meaning the area is 4^2 or 16. The area of a triangle is (1/2)base*height. The base length is 4 inches and the height is 6.3, and (1/2)*4*6.3 is 12.6. Note that, since there are four triangles, we have to multiply this value by 4 (12.6*4 = 50.4). Now we have the area of the square and the area of all the triangles put together, so we can just add them up:

16 + 50.4 = 66.4

8 0
2 years ago
I need answer please​
zhenek [66]

Answer:

We know that lines <em>l</em><em> </em>and <em>m</em><em> </em>are parallel. The alternate interior angles rule states that the alternate interior angles formed by parallel lines are equal. So let's equate them.

2x + 22 = 4x

putting variables on one side,

22 = 4x - 2x

Thus 2x = 22

x becomes 22÷2

Therefore,<u> x = 11.</u>

pls give brainliest for the answer

8 0
2 years ago
What potential rational root is -2/5
vovangra [49]

Answer:

180

Step-by-step explanation:

180 is the left

7 0
3 years ago
Read 2 more answers
Other questions:
  • Define a variable. Then write and solve an equation for each situation.
    15·2 answers
  • The measures of two angles have a a sum of 180°. The measures if the angles are in a ratio of 5:1. Determine the measures of bot
    11·1 answer
  • Find the point of intersection of the lines 7x-2y=25 and 5y=3x-19, then find the value of 5x-y^2.
    15·1 answer
  • 1 hundred + 3 tenths =
    11·2 answers
  • What is 87 divided by 24
    9·1 answer
  • He’ll help help help
    15·2 answers
  • PLEASE PLEASE HELP ILL MARK AS BRANLIEST
    13·1 answer
  • Triangles PQR and XYZ are similar. What is the length of XZ?
    6·1 answer
  • The book is sold for 5.4 dollars at a profit of 8% on the cost price what was the cost price
    5·1 answer
  • Three-tenths times two-tenths
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!