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
Fynjy0 [20]
4 years ago
9

Y = 2x – 2 2y = 4x - 4

Mathematics
2 answers:
Lisa [10]4 years ago
8 0

Answer:

Both Y and X are 2.

Step-by-step explanation:

777dan777 [17]4 years ago
7 0

Answer:X and Y are both 2.

Step-by-step explanation: Using substitution, replace the y coefficient with the first equation. Then solve for x and substitute it for the x in the first problem.

You might be interested in
Draw a Box Plot neatly (Box & Whisker, 5 Number Summary) to represent the following points scored by a basketball player 15,
Alenkasestr [34]
Ok brivybhjsjsjnnssbjejabwbbss
4 0
3 years ago
A 1.5m tall boy casts a 3m shadow. Calculate the height of a tree that simultaneously casts an 8m shadow.
iren2701 [21]
If 1.5m boy makes a 3m that means it doubled. A 8m tree can probably be 16m
6 0
3 years ago
A Norman window is a window with a semi-circle on top of regular rectangular window. (See the picture.) What should be the dimen
Vikki [24]

Answer:

bottom side (a) = 3.36 ft

lateral side (b) = 4.68 ft

Step-by-step explanation:

We have to maximize the area of the window, subject to a constraint in the perimeter of the window.

If we defined a as the bottom side, and b as the lateral side, we have the area defined as:

A=A_r+A_c/2=a\cdot b+\dfrac{\pi r^2}{2}=ab+\dfrac{\pi}{2}\left (\dfrac{a}{2}\right)^2=ab+\dfrac{\pi a^2}{8}

The restriction is that the perimeter have to be 12 ft at most:

P=(a+2b)+\dfrac{\pi a}{2}=2b+a+(\dfrac{\pi}{2}) a=2b+(1+\dfrac{\pi}{2})a=12

We can express b in function of a as:

2b+(1+\dfrac{\pi}{2})a=12\\\\\\2b=12-(1+\dfrac{\pi}{2})a\\\\\\b=6-\left(\dfrac{1}{2}+\dfrac{\pi}{4}\right)a

Then, the area become:

A=ab+\dfrac{\pi a^2}{8}=a(6-\left(\dfrac{1}{2}+\dfrac{\pi}{4}\right)a)+\dfrac{\pi a^2}{8}\\\\\\A=6a-\left(\dfrac{1}{2}+\dfrac{\pi}{4}\right)a^2+\dfrac{\pi a^2}{8}\\\\\\A=6a-\left(\dfrac{1}{2}+\dfrac{\pi}{4}-\dfrac{\pi}{8}\right)a^2\\\\\\A=6a-\left(\dfrac{1}{2}+\dfrac{\pi}{8}\right)a^2

To maximize the area, we derive and equal to zero:

\dfrac{dA}{da}=6-2\left(\dfrac{1}{2}+\dfrac{\pi}{8}\right )a=0\\\\\\6-(1-\pi/4)a=0\\\\a=\dfrac{6}{(1+\pi/4)}\approx6/1.78\approx 3.36

Then, b is:

b=6-\left(\dfrac{1}{2}+\dfrac{\pi}{4}\right)a\\\\\\b=6-0.393*3.36=6-1.32\\\\b=4.68

3 0
4 years ago
Suppose the graph represents a map in which each grid unit equals 1 mile. If a school is located at B and a
trasher [3.6K]

answer: 5 miles

Step-by-step explanation:

use the distance formula to solve this problem. plug in the two coordinates to solve this problem.

6 0
2 years ago
Which expression can be used to add 3/4 + 1/6
icang [17]

Answer:

Socratic app

Step-by-step explanation:

it will help you

7 0
2 years ago
Other questions:
  • A 100 ft. building casts a 300 ft. Shadow from the sun. What is the angle of depression?
    14·1 answer
  • Please help
    5·1 answer
  • HELP! Please answer the question above tia
    11·1 answer
  • X
    8·1 answer
  • How do you solve it I don’t understand it that well
    9·1 answer
  • What is the slope of the line
    12·1 answer
  • Line w is parallel to line v and passes through point (–6, 10). Which is the equation of line w in slope-intercept form? in y=mx
    10·1 answer
  • Here is a rectangle all measurement are in centimetres the area is 48cm^2 find the value of y
    9·1 answer
  • What volume will be occupied by 170 grams of NH3 gas at STP?
    7·1 answer
  • could someone PLEASE help me with this slope activity? any help would be appreciated, ive been stuck on it for days. this is 10t
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!