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
irakobra [83]
3 years ago
7

Find acute angle between the line 2x+4y=7 and x+2y=5

Mathematics
1 answer:
Morgarella [4.7K]3 years ago
6 0

Answer:

arctan(4/3) ≈ 0.9272

Step-by-step explanation:

On comparing eqⁿ to y = mx + c,

Slope of 2x + 4y = 7 is -2/4 = - 1/2

Slope of x + 2y = 5 is - 1/2

Therefore, if A is the angle b/w them,

A = arctan | (m1 + m2)/(1 - m1m2) |

A = arctan | (-½ - ½)/(1 - ¼) |

A = arctan (4/3)

You might be interested in
Having problems with this, please help.<br>And don’t know where to start.
rodikova [14]

Answer:

Use the pythagorean theorem to solve the equations. If you aren't solving for c, manipulate the equation to solve for whichever side you are solving for.

4 0
3 years ago
Read 2 more answers
What's the answer to this question ? I've been really confused for the past 20 minutes
Rufina [12.5K]

sqrt(570025)= 755 feet

 one side is 755 feet


 the hint told you how to solve it

6 0
4 years ago
Can someone help me out?
Arlecino [84]

The red line is moving up from left to right, which means it is increasing.

7 0
3 years ago
Read 2 more answers
Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar.
larisa86 [58]

Answer:

y = -2x^2 -4x +5

Step-by-step explanation:

The vertex is at (-1,7)  and the y intercept is at (0,5)

The vertex form of a parabola is

y = a(x-h)^2 +k

where (h,k) is the vertex

y = a(x--1)^2 +7

Then substitute the point into the equation

y = a(x+1)^2 +7

5  = a(0+1)^2 +7 +7

Subtract 7 from each side

5-7 = a(1)^2

-2 = a

y = -2(x+1)^2 +7

Now FOIL

y = -2 (x^2 +2x+1) +7

Then distribute

y = -2x^2 -4x-2 +7

y = -2x^2 -4x +5

5 0
3 years ago
Read 2 more answers
Tell whether x and y show a positive, a negative, or no correlation.
mezya [45]

Answer:

her 9PM and a lot are a little too short

4 0
3 years ago
Other questions:
  • Is the following relation a function? (4,2), (1,1), (0,0), (1, -1), (4, -2). Give the domain and range.
    12·1 answer
  • cylinder A has a radius of 1m and height of 3 M. cylinder B has a radius of 3m and a height of 3m. what is the ratio of the volu
    7·2 answers
  • PLZ HELP WILL MARK BRAINLIEST!
    9·1 answer
  • Please help,, this is due today I really need help :(
    11·1 answer
  • What’s the x-intercept of the graph of <br> 5x-4y= 20
    6·1 answer
  • Solve:<br><br> 2(3r+4)−3(r+1)=11<br> A <br> 0<br> B <br> 2<br> C <br> 3<br> D <br> 163
    15·1 answer
  • Who here watches haikyuu im bo.red and wanna talk about something
    7·2 answers
  • Which shape below has both reflection and rotation symmetry
    6·1 answer
  • Can you help me with this​
    11·1 answer
  • Plz help me plz <br> Also phone reval XD
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!