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
nikdorinn [45]
3 years ago
9

Need help with some practice questions since all are different types I'm asking alot sorry!​

Mathematics
1 answer:
sasho [114]3 years ago
3 0

Answer:

Yes

Step-by-step explanation:

If they're perpendicular, that means that angle ECM = 90 degrees and angle ACE = 90 degrees. To figure out if this works, plug that into the two equations they give:

ECM = 3x + 15

becomes

90 = 3x + 15

75 = 3x

25 = x

ACE = 4x - 10

becomes

90 = 4x - 10

100 = 4x

25 = x

Since you get x = 25 for both, you know that they are perpendicular because they both measure 90 degrees

You might be interested in
Gavin goes to the market and buys one rectangle shaped board. The length of the board is 16 cm and width is 10 cm. if he wants t
Ira Lisetskai [31]
Check the picture below.

doesn't that make it just a 20 x 14?  well, surely you know what that area is.

8 0
3 years ago
I don’t understand this question. Can anyone help? I need answers ASAP. Thanks for all the help
zavuch27 [327]

There's some unknown (but derivable) system of equations being modeled by the two lines in the given graph. (But we don't care what equations make up these lines.)

There's no solution to this particular system because the two lines are parallel.

How do we know they're parallel? Parallel lines have the same slope, and we can easily calculate the slope of these lines.

The line on the left passes through the points (-1, 0) and (0, -2), so it has slope

(-2 - 0)/(0 - (-1)) = -2/1 = -2

The line on the right passes through (0, 2) and (1, 0), so its slope is

(0 - 2)/(1 - 0) = -2/1 = -2

The slopes are equal, so the lines are parallel.

Why does this mean there is no solution? Graphically, a solution to the system is represented by an intersection of the lines. Parallel lines never intersect, so there is no solution.

7 0
3 years ago
PLEASE HELP ME!!!!!!!!!!
nikklg [1K]

Answer:

-7/10

Step-by-step explanation:

To find the slope of a line, you need to find the \frac{rise}{run} between two points. I will be using the points (-3, 5) and (7, -2).

\frac{rise}{run} = \frac{-2-5}{7-(-3)}

     = \frac{-7}{10}

     = -7/10

8 0
3 years ago
Convert 2000 centimeters to inches
Free_Kalibri [48]

Answer:

787.4016 inches

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Please help me- Math Sucks >:(
lorasvet [3.4K]

Answer:

4x2 and 8 divided by 4

Step-by-step explanation:

I love math !

6 0
3 years ago
Read 2 more answers
Other questions:
  • Two complementary angles are the ratio if 4:2 find the measure of each angle
    9·1 answer
  • the area of one circle is 9 times as great as the area of another. If the radius of smaller circle is 3, find the radius of larg
    12·1 answer
  • One number is 11 more than 3 times another number. Their sum is 75. Find the smaller number.
    7·1 answer
  • Find a recursive rule for the sequence 2 4 6 10
    6·1 answer
  • Under a
    7·1 answer
  • Find the surface area of the cylinder to the nearest tenth. Use 3.14 for n
    12·1 answer
  • Jessica's family took a 7-hour-and-27-minute trip on a train. They left at 7:00 a.m.
    5·1 answer
  • 8th GRADE MATH #7 On its first visit to the vet, Emma’s Kitten weighed 30 ounces. On its second visit, the kitten had gained 8 o
    6·1 answer
  • What is the least common denominator of 10 and 14​
    13·2 answers
  • QUICK PLEASE. A person invest $2000 at 4.5% simple interest for two years. make sure to show all your work.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!