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
Citrus2011 [14]
2 years ago
6

Someone help. Foundation

Mathematics
1 answer:
Romashka-Z-Leto [24]2 years ago
4 0

Answer:

rotation of 90 degrees counterclockwise centered at the origin

Step-by-step explanation:

Just look at one single point of A and what must happen to it to become the corresponding point in B.

Look at point (2, 1) in figure A. Draw a segment from (0, 0) to (2, 1).

The corresponding point in figure B to (2, 1) is (-1, 2). Now draw a segment from (0, 0) to (-1, 2). Look at the relationship between the two segments.

The segment (0, 0) to (2, 1) is perpendicular to the segment (0, 0) to (-1, 2).

The transformation is a rotation of 90 degrees counterclockwise centered at the origin.

You might be interested in
YES I AM GIVING A BRAINLIST :D
zhuklara [117]

Answer:

y=10x-2x ................

3 0
2 years ago
A periscope is 5 feet above the surface of the ocean. Through it can be seen a ship that rises to 50 feet above the water. To th
Lyrx [107]
<span> Sketch this, assuming the Earth is a sphere with radius R, so a plane slice through the periscope, ship and center of the Earth is a circle of radius R. Draw the lines out from the center (O) of the circle to point A at the top of the periscope and point B at the top of the ship. so that line AB is tangent to the circle at point C. That makes triangles OAC and OBC right triangles, each having the right angle at C. </span>

<span>From the problem, the lengths OA = R+5, OC = R, and OB=R+50. Label the lengths AC = p and BC= q, then use Pythagoras: </span>

<span>R² + p² = (R + 5)² </span>
<span>R² + q² = (R + 50)² </span>

<span>Solve those: </span>
<span>p² = (R + 5)² - R² = 10R - 25 </span>
<span>p = √(10R + 25) </span>

<span>q² = (R + 50)² - R² = 100R + 2500 </span>
<span>q = √(100R + 2500) </span>

<span>Find a good value for the radius R (in ft. units!) and calculate. The distance from periscope top to ship top is (p + q) feet. Convert that to miles for your answer.</span>
8 0
3 years ago
Write n^5 x n^2 without exponents ​
Alexxandr [17]
(n x n x n x n)(n x n)
7 0
3 years ago
A rectangular piece of land is to be fenced using two kinds of fencing. Two opposite sides will be fenced using standard fencing
damaskus [11]

Answer:

Therefore the dimension of the rectangular piece of land is 375 m by 250 m.

Step-by-step explanation:

Given that,

Two opposite sides of rectangular land will be fenced using standard fencing that costs $6 per m while the other two side will require heavy duty fencing that costs $9 per m.

Let the length and width of the rectangular x and y respectively.

Then total cost for fencing = \$(2x\times 6+2y\times 9)

                                            =$(12x+18y)

Then,

12x+18y= 9,000

⇒ 2x+3y=1,500     [ cancel out common factor 6]

⇒3y= 1500 - 2x

\Rightarrow y=\frac{1500-2x}{3} ....(1)

The area of the rectangular land is = Length × width

                                                          = xy

Let,

A=xy

Putting the value of y

A=x.\frac{1500-2x}{3}

\Rightarrow A=\frac13(1500x-2x^2)

Differentiating with respect to x

A'=\frac13(1500-4x)

Again differentiating with respect to x

A''=-\frac43

Now we have to determine the critical value of A.

For critical value set A'=0

\frac13(1500-4x)=0

⇒1500-4x=0

\Rightarrow x=\frac{1500}{4}

\Rightarrow x=375 m

Since, A''|_{x=375}=-\frac43. at x=375 m the area of the rectangular piece of land is maximum.

From equation (1) we get when x=375

y=\frac{1500-2\times 375}{3}

⇒y=250 m

Therefore the dimension of the rectangular piece of land is 375 m by 250 m.

3 0
3 years ago
Anybody know the answer??
zubka84 [21]
Yes it's the second one

4 0
3 years ago
Other questions:
  • Paula runs with 2 of her friends. The table below shows their last 3 lap times.
    14·1 answer
  • I have no idea what to do with this someone help
    7·2 answers
  • HELP QUICK PLEASE 20 POINTS
    9·2 answers
  • Iodine-125 has a half-life of about 60 days.
    6·1 answer
  • The number of yellow fish at the aquarium is 5 fewer than 3 times the number of blue fish. The table shows how the number of yel
    14·2 answers
  • Farmer Fran is harvesting her crop of pomegranates. We don’t know when she started, but at 10:00 A.M., she had already harvested
    14·1 answer
  • I can identify and use inverses to solve equations with one variable
    6·1 answer
  • Two S-year old girls, Alyse and Jocelyn, have been training to run a mile racc Alyse's I mile A is approximately Normally distri
    14·1 answer
  • Ye Li drew a quadrilateral that is both a rectangle and a rhombus. Name the quadrilateral and describe it using the properties o
    8·1 answer
  • find an expression that represents the difference when (3x+6y)(3x+6y) is subtracted from (4x+9y)(4x+9y) in simplest terms. what
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!