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
Lelechka [254]
3 years ago
13

Select all of the rigid motions below.

Mathematics
1 answer:
dedylja [7]3 years ago
5 0
Reflection, translation, rotation
You might be interested in
How many shirts do I have if have a ratio of 2 to 7 with ten pairs of pants
tiny-mole [99]
2/7 = x/10
cross multiply:
10 * 2 = 20
7 * x = 7x

7x = 20
x = 2.857
3 0
3 years ago
A rocket is launched from a tower. The height of the rocket, y in feet, is related to the time after launch, x in seconds, by th
mash [69]

Answer:

The rocket hits the gorund after approximately 10.71 seconds.

Step-by-step explanation:

The height of the rocket <em>y</em> in feet <em>x</em> seconds after launch is given by the equation:

y=-16x^2+165x+69

And we want to find the time in which the rocket will hit the ground.

When it hits the ground, its height above ground will be 0. Hence, we can let <em>y</em> = 0 and solve for <em>x: </em>

<em />0=-16x^2+165x+69<em />

We can use the quadratic formula:

\displaystyle x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}

In this case, <em>a</em> = -16, <em>b</em> = 165, and <em>c </em>= 69.

Substitute:

\displaystyle x=\frac{-165\pm\sqrt{(165)^2-4(-16)(69)}}{2(-16)}

Evaluate:

\displaystyle x=\frac{-165\pm\sqrt{31641}}{-32}=\frac{165\pm\sqrt{31641}}{32}

Hence, our solutions are:

\displaystyle x_1=\frac{165+\sqrt{31641}}{32}\approx 10.71\text{ or } x_2=\frac{165-\sqrt{31641}}{32}\approx-0.40

Since time cannot be negative, we can ignore the first answer.

So, the rocket hits the gorund after approximately 10.71 seconds.

7 0
3 years ago
Best explained and correct answer gets brainliest.
ahrayia [7]
Y = 0 so
x^2 + 6x - 40 = 0
(x +10)(x - 4) = 0
x+10 = 0; x = -10
x - 4 = 0; x = 4
answer is C. x = -10 and x = 4
4 0
3 years ago
Bernard used the expression 18x + 27 to calculate his earnings. Select all of the expressions that are equivalent to Bernard's e
lisabon 2012 [21]

Answer:

A. and E.

Step-by-step explanation:

9(2x + 3)

9 times 2x = 18x  9 times 3 = 27

18x + 27

3(6x+9)

3 times 6x = 18x  3 times 9 = 27

18x + 27

Hope this helps dude ! ^-^

7 0
3 years ago
Need help with this plz
Anit [1.1K]
Only three regular polygons tessellate<span>: equilateral triangles, squares, and </span>regular<span>hexagons. </span>No<span> other </span>regular polygon can tessellate<span> because of the angles of the corners of the </span>polygons<span>. ... For </span>regular polygons<span>, that means that the angle of the corners of the </span>polygon<span> has to divide 360 degrees</span>
5 0
3 years ago
Other questions:
  • A gas pump measures volume of gas to the nearest 0.01 gallon.which measurement shows an appropriate level of precision for the p
    7·1 answer
  • Solutions of x^5-32i=0 in rectangular form.
    14·1 answer
  • How do u subtract 4/8 from 5/8
    9·1 answer
  • Please help with my math :)
    14·1 answer
  • The expression 4x/5 - 2x/3 is equivalent to
    10·1 answer
  • Rewrite 2x^2+13x+26/x+4 in the form q(x)+r(x)/b(x) . Then find q(x) and r(x).
    8·2 answers
  • Find the area and the circumference of a circle with radius 6cm.
    6·1 answer
  • I need to know the answer
    8·1 answer
  • Melody's friend Leena earns $15 per hour as a lab technician plus an extra $300 per week for singing at a club on the weekend.
    11·1 answer
  • Line m passes through point (5,- 8) and has a slope - 3. What is the equation for the line point slope form
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!