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
dybincka [34]
3 years ago
9

Please help!!!! i don’t understand any of this and really need it.

Mathematics
1 answer:
astraxan [27]3 years ago
5 0

Answer:

B) 3.2 mi

Step-by-step explanation:

1. The midpoints: midpoint formula = <em>((x₁ + x₂)/2, (y₁+ y₂)/2)</em>

upper = ((6 + -4)/2, (8 + 0)/2) --><em> (1, 4)</em>

lower = ((-8 + 2)/2, (3 + -5)/2) --><em> (-3, -1)</em>

2. Distance: distance formula = <em>√((x₁ - x₂)² + (y₁ - y₂)²)</em>

√((1 + 3)² + (4 + 1)²) = √(16 + 25) = √41 ≈ 6.403... ≈ <em>6.4</em>

3. Scale: 6.4 * 0.5 mi = 3.2 mi

You might be interested in
Assume that 3 digits are selected at random from the set {1,3,5,6,7,8} { 1 , 3 , 5 , 6 , 7 , 8 } and are arranged in random orde
Mumz [18]
Sample space is 36.so the probability must be 20/36.from three digits the maximum no.of number can be made is 6.
4 0
3 years ago
Lyril inspects sneakers at a
NISA [10]

Answer:

0.8

Step-by-step explanation:

Of the 60 sneakers inspected, 48 were acceptable.  The experimental probability is therefore:

P = 48/60

P = 0.8

4 0
4 years ago
Etermine two pairs of polar coordinates for the point (2, -2) with 0° ≤ θ &lt; 360°.
Jet001 [13]

To convert from rectangular to polar we will use these 2 formulas:

r^2=x^2+y^2 and

tan\theta=\frac{y}{x}.

The r value found serves as the first coordinate in our polar coordinate, and the angle serves as the second coordinate of the pair. We are told to find 2. Since the r value will always be the same (it's the length of the hypotenuse created in the right triangle we form when determining our angle theta), the angle is what is going to be different in our coordinate pairs. We use the x and y coordinates from the given rectangular coordinate to solve for the r in both our coordinate pairs.

r^2=2^2+ -2^2 which gives us an r value of 2\sqrt{2}. That's r for both coordinate pairs. Now we move to the angle. Setting up according to our formula we have

tan\theta =\frac{-2}{2} =-1.

This asks the question "what angle(s) has/have a tangent of -1?". That's what we have to find out! Since the tangent ratio is y/x AND since it is negative, it is going to lie in a quadrant where x is negative and y is positive, AND where x is positive and y is negative. Those quadrants are 2 and 4. In QII, x is negative so the tangent ratio is negative here; in QIV, y is negative so the tangent ratio is negative here as well. Now, if we type inverse tangent of -1 into our calculators in degree mode, we get that the angle that has a tangent of -1 is -45. Measured from the positive x axis, -45 does in fact go into the fourth quadrant. However, since the inverse tangent of -1 is -45, we also have a 45 degree angle in the second quadrant. Those are reference angles, mind you. A 45 degree angle in QII has a coterminal angle of 135 degree; a 45 degree angle in QIV has a coterminal angle of 315. If you don't understand that, go back to your lesson on reference angles and coterminal angles to see what those are. So our polar coordinates for that rectangular coordinate are

(2\sqrt{2},135) and

(2\sqrt{2},315)

8 0
3 years ago
Help please just this whoever answers correctly I will mark brainliest
slega [8]

Answer:

10: (10×0.15)+3.50:$5

15: (15×0.15)+3.50:$5.75

20:(20×0.15)+3.50: $6.50

25:(25×0.15)+3.50: $7.25

6 0
3 years ago
Read 2 more answers
1 by 4 of rupees 828 explaine it​
NikAS [45]

Answer:

₹207

Step-by-step explanation:

1 by 4 of rupees 828

=  \frac{1}{ \cancel4}  \times \cancel{ 828 } \:  \:  \:  \red{ \bold{207}}\\  \\

8 0
3 years ago
Other questions:
  • Find the area of the shape shown below. NEED HELP ASAPPPPPPPPP
    13·1 answer
  • when two lines intersect one of the angel formed is 82 degrees what would be the measure if the angle vertical to the 82 degree
    7·1 answer
  • What is the solution to the system? 1. 5 x -4 y -3 z =3, 2. x + y -z =0, 3. x = 3 y + 1? I haven't done this kind of math. I am
    7·1 answer
  • Solve 10m -28 = 6 -7m​
    6·2 answers
  • What value is equivalent to​
    11·1 answer
  • 4c^2-8c-1=0 complete the square round to nearest hundredth
    7·1 answer
  • How did the 5 become 15/4... kinda confuse can anybody help????????????
    7·1 answer
  • Simple Interest on £50 at 3% for 2 years
    10·1 answer
  • 2x + 9 = 5x + 4 solve for x plsssss
    7·2 answers
  • I really need help with number 7 please help
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!