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
Alla [95]
2 years ago
14

Can someone please help

Mathematics
1 answer:
Y_Kistochka [10]2 years ago
6 0

Answer:

  see below

Step-by-step explanation:

The product of a scalar and a matrix is a matrix of the <em>same dimensions</em>, each term having been multiplied by the scalar. The only answer choice with the same dimensions as the original is the last choice.

You might be interested in
You earn 35 for washing 7 cars how much do you earn for washing 4 cars
Neko [114]

Answer:

20

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
PLEASE HELP IM STUCK ON A PROBLEM....
sleet_krkn [62]

Answer:

Number line A.

Step-by-step explanation:

|-5x| - 11 = -1

Add 11 to both sides.

|-5x| = 10

-5x = 10 or -5x = -10

x = -2 or x = 2

Answer: Number line A.

5 0
2 years ago
3 Questions Math! HELP!!!
Sveta_85 [38]
1) Since the larger number is a negative, you’re going to get a negative solution for number one. An easy way to do the math is to ignore the negative sign in (-116) For a moment. And subtract 56 from it.
116 - 56 = 60. Don’t forget to place the negative sign we pushed to this side before the solution. The answer is -60.

2) We do the same thing we did in number one, but with new numbers. The answer in total is -178.

3. As stated, we do the same thing we did in number one. Just because there’s a decimal doesn’t change much. And your answer would be -1.1
8 0
3 years ago
Read 2 more answers
A ball of radius 15 has a round hole of radius 5 drilled through its center. Find the volume of the resulting solid. Hint: The u
OverLord2011 [107]

Answer:

The volume of the ball with the drilled hole is:

\displaystyle\frac{8000\pi\sqrt{2}}{3}

Step-by-step explanation:

See attached a sketch of the region that is revolved about the y-axis to produce the upper half of the ball. Notice the function y is the equation of a circle centered at the origin with radius 15:

x^2+y^2=15^2\to y=\sqrt{225-x^2}

Then we set the integral for the volume by using shell method:

\displaystyle\int_5^{15}2\pi x\sqrt{225-x^2}dx

That can be solved by substitution:

u=225-x^2\to du=-2xdx

The limits of integration also change:

For x=5: u=225-5^2=200

For x=15: u=225-15^2=0

So the integral becomes:

\displaystyle -\int_{200}^{0}\pi \sqrt{u}du

If we flip the limits we also get rid of the minus in front, and writing the root as an exponent we get:

\displaystyle \int_{0}^{200}\pi u^{1/2}du

Then applying the basic rule we get:

\displaystyle\frac{2\pi}{3}u^{3/2}\Bigg|_0^{200}=\frac{2\pi(200\sqrt{200})}{3}=\frac{400\pi(10)\sqrt{2}}{3}=\frac{4000\pi\sqrt{2}}{3}

Since that is just half of the solid, we multiply by 2 to get the complete volume:

\displaystyle\frac{2\cdot4000\pi\sqrt{2}}{3}

=\displaystyle\frac{8000\pi\sqrt{2}}{3}

5 0
3 years ago
What is the volume of a rectangular pool that is 20.00 meters long, 12.00 meters deep, and 13.00 feet wide (1 meter
almond37 [142]

Answer:

240 m³

Step-by-step explanation:

volume = length × width × depth

240 m³ = 20 m × 1 m × 12 m

3 0
2 years ago
Other questions:
  • HELP MEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
    13·1 answer
  • Evaluate the following expression when b = -4 , -4.5b=
    10·1 answer
  • Write an equation of a line in slope-intercept form that is parallel to y = 3x+6 and passes through the point (-10, 2.5).
    11·1 answer
  • Find the coordinates of the midpoint of the segment with the given pair of endpoints. J(6, 6); K(2, –4)
    14·1 answer
  • Find the area and the circumference of a circle with diameter 6 m.
    14·1 answer
  • (–23) – 45 – (–98) = ?
    14·2 answers
  • Need DESPERATE help! I'm taking a unit test for math (k12, 10th grade) I got 3 done already so here's the ones I missed: Questio
    5·1 answer
  • Solve the derivative of f(x)= x^4e^tanx
    7·1 answer
  • a university is comparing the grade point averages of biology majors with grade point averages of engineering majors. the univer
    14·1 answer
  • Please help I need to finish Alex before the school day ends, 30 points.
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!