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
Alex787 [66]
3 years ago
12

Please help with this

Mathematics
2 answers:
xenn [34]3 years ago
5 0

Answer:

Step-by-step explanation:

a

Nezavi [6.7K]3 years ago
5 0

Answer:

The answer is A.

You might be interested in
Consider the enlargement of the pentagon. A small pentagon has a bottom side length of x centimeters and left side length of 7 c
il63 [147K]

Answer:

3.3 cm

Step-by-step explanation:

From the above question, we can draw out a proportion

= Small pentagon = Large pentagon

= x/7 = 7/15

Cross Multiply

x × 15 = 7 × 7

15x = 49

x = 49/15

x = 3.2666666667 cm

Approximately= 3.3 cm

7 0
2 years ago
Read 2 more answers
What is f(7) for the rule of f(x)=-5x+10​
Anna35 [415]

Answer:

f(7) = - 25

Step-by-step explanation:

To evaluate f(7) substitute x = 7 into f(x), that is

f(7) = - 5(7) + 10 = - 35 + 10 = - 25

8 0
3 years ago
Factor the expression using the GCF: 12x + 36 *
Rashid [163]

The answer fam is.........12(x + 3)

6 0
3 years ago
What is the constant of proportionality for the graph? The graph is attached
hichkok12 [17]
The answer is A. 0.5. 

When you go out 1 on the X-axis you go up 0.5 on the Y-axis, thus the ratio is 0.5.

This is not easy to see, but if you go out 10 on the X-axis, it is easy to see that the Y-axis is at 5. Again giving the ratio 5/10=0.5
5 0
3 years ago
Find two unit vectors orthogonal to both 8, 5, 1 and −1, 1, 0 .
Elina [12.6K]
In order to do this, you must first find the "cross product" of these vectors. To do that, we can use several methods. To simplify this first, I suggest you compute:

‹1, -1, 1› × ‹0, 1, 1›

You are interested in vectors orthogonal to the originals, which don't change when you scale them. Using 0,-1,1 is much easier than 6s and 7s.

So what methods are there to compute this? You can review them here (or presumably in your class notes or textbook):
http://en.wikipedia.org/wiki/Cross_produ...

In addition to these methods, sometimes I like to set up:
‹1, -1, 1› • ‹a, b, c› = 0
‹0, 1, 1› • ‹a, b, c› = 0

That is the dot product, and having these dot products equal zero guarantees orthogonality. You can convert that to:

a - b + c = 0
b + c = 0

This is two equations, three unknowns, so you can solve it with one free parameter:

b = -c
a = c - b = -2c

The computation, regardless of method, yields:
‹1, -1, 1› × ‹0, 1, 1› = ‹-2, -1, 1›

The above method, solving equations, works because you'd just plug in c=1 to obtain this solution. However, it is not a unit vector. There will always be two unit vectors (if you find one, then its negative will be the other of course). To find the unit vector, we need to find the magnitude of our vector:

|| ‹-2, -1, 1› || = √( (-2)² + (-1)² + (1)² ) = √( 4 + 1 + 1 ) = √6

Then we divide that vector by its magnitude to yield one solution:

‹ -2/√6 , -1/√6 , 1/√6 ›

And take the negative for the other:

‹ 2/√6 , 1/√6 , -1/√6 ›
7 0
3 years ago
Other questions:
  • Write a quadratic equation with roots of 3/4 and -4
    12·1 answer
  • Which transformation shows that the two given circles are similar? Circle A -- center(2, 0), radius 8 Circle A' -- center(-1, 5)
    11·2 answers
  • The carousel at a local theme park has a diameter of 32 feet. each ride last three minutes and the speed of the carousel is 4.3
    15·1 answer
  • keith and michelle went out to dinner. the total cost of the meal including the tip came $53.70. if the combined tip came out to
    5·1 answer
  • Which property is 32x0 = 0
    14·1 answer
  • Pls help me give u a brainlest
    9·2 answers
  • A military plane is flying directly toward an air traffic control tower, maintaining an altitude of 9 miles above the tower. The
    13·1 answer
  • On Tuesday, the Madison Avenue Hotel had 5 occupied rooms for every 2 unoccupied rooms. If there
    11·1 answer
  • Jonathan is rolling to dice and needs to roll and 11 to win the game he is playing what is the probability that Jonathan wins th
    9·1 answer
  • Please help!!! Here is 25 point please helpp
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!