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il63 [147K]
3 years ago
15

If the sum of a number and three is doubled?, the result is seven less than the number. Find the number

Mathematics
1 answer:
pentagon [3]3 years ago
6 0
(x+3)*2=x-7
2x+6=x-7
x=-13
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What is the point slope form of (2,0)(4,-2)
olasank [31]
Youd first need the slope. (i think) 
-2 - 0/ 4 - 2   so simplify this 
you get -2/2  simplify that.
y = -1x is yuor equation because you dont have a y - intercept. ;)
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A rancher has 400 feet of fencing to put around a rectangular field and then subdivide the field into 3 identical smaller rectan
MAXImum [283]

Answer:

longer parallel sides are 150ft each with 4 shorter sides at 25ft each making a rectangle and 3 identical sections.

Step-by-step explanation:

150 + 150 = 300

4 ×25 = 100

300+100=400

5 0
3 years ago
The steps in the heating of water in a pot kept on a stove are listed below:
butalik [34]

Answer

Step 1 and step 2

Step by step explanation

Heat can be transferred from one place to another place.

When pot kept on a stove, the heat from flame travels to the base of the pot, then heat travels from the base to the water.

Step 1: Heat from the flame travels to the base of the pot.

Step 2: Heat from the base of the pot travels to the water near its base.

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4 0
3 years ago
Read 2 more answers
Solve for the value of x.<br> x + 4°<br> 134°
Juli2301 [7.4K]

Step-by-step explanation:

The answer is 130° since you subtract 4° from both sides

4 0
3 years ago
If rectangle ABCD is rotated counter clock wise 90º about the origin, what will be the coordinates of the vertex D'?
7nadin3 [17]
So, the best way to do this is translate it to clockwise. 90 degrees counterclockwise is equal to 270 degrees clockwise. So, basically, to rotate, you would follow the following format for each point-
(X,Y) -> (-Y,X)
Now, you do it for each of the points.
A= (-5,5), so A' would be (-5,-5)
B= (-1,5), so B' would be (-5,-1)
C= (-5,4), so C' would be (-4,-5)
D= (-1,4) so D' would be (-4,-1)
Notice, how all the points end up in the square below it. Each quadrant has a specific number. The top right is quadrant 1, the top left is quadrant 2, the bottom left is quadrant 3, and the bottom right is quadrant 4. If you are rotating 270 degrees clockwise, you move to the right, like a clock. That puts the new rectangle in quadrant 3. That is a way to check your work.
Now, just so you know for future reference, the following are also different formats for different problems--
A 90 degree Clockwise rotation about the origin will be (X,Y) -> (Y, -X) *Note, -x just stands for the opposite. Say your original x is a negative number. Then the prime (new) x will be positive.
A 180 degree Clockwise rotation about the origin would be (X,Y) -> (-X,-Y) *Note, -y also stands for the opposite.
A 270 degree clockwise rotation about the origin would be (X,Y) -> (-Y,X).
For translating---
90 degrees Clockwise = 270 degrees Counter
270 degrees Clockwise = 90 degrees Counter

Hope this helped!
4 0
3 years ago
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