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vfiekz [6]
3 years ago
8

Find the equation of the line that passes through (3,1) and is parallel to y=2x+1.

Mathematics
1 answer:
creativ13 [48]3 years ago
7 0

9514 1404 393

Answer:

  y = 2x -5

Step-by-step explanation:

The parallel line will differ only in the value of c. That can be found using the given point.

  y = mx +c

  c = y -mx . . . . . . subtract mx to solve for c

  c = 1 -2·3 = -5 . . . . . . the value of m is 2 in the given equation (x, y) = (3, 1)

The equation of the parallel line is ...

  y = 2x -5

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Find the dimensions of the rectangle with area 256 square inches that has minimum perimeter, and then find the minimum perimeter
mezya [45]

Answer:

Dimensions: A=a\cdot b=256

Perimiter: P=2a+2b

Minimum perimeter: [16,16]

Step-by-step explanation:

This is a problem of optimization with constraints.

We can define the rectangle with two sides of size "a" and two sides of size "b".

The area of the rectangle can be defined then as:

A=a\cdot b=256

This is the constraint.

To simplify and as we have only one constraint and two variables, we can express a in function of b as:

b=\frac{256}{a}

The function we want to optimize is the diameter.

We can express the diameter as:

P=2a+2b=2a+2*\frac{256}{a}

To optimize we can derive the function and equal to zero.

dP/da=2+2\cdot (-1)\cdot\frac{256}{a^2}=0\\\\\frac{512}{a^2}=2\\\\a=\sqrt{512/2}= \sqrt {256} =16\\\\b=256/a=256/16=16

The minimum perimiter happens when both sides are of size 16 (a square).

4 0
3 years ago
Find the value of the logarithm Log 182 round answer to the nearest thousandth
Tresset [83]

log(182)=log(2*7*13)

As, log(m*n)=log(m)+log(n)

log(2*7*13)=log(2)+log(7)+log(13)

=0.301029+0.845098+1.13943

=2.26007

=2.260(approximate)

6 0
3 years ago
Read 2 more answers
Segment MN has endpoints at M(-5, 4) and N(7, -5). What is the midpoint of MN???? PLZ HELP
Paha777 [63]
Theres a formula to find the midpoint it’s... (x1+x2)/2, (y1+y2)/2. You fill in the x’s and y’s to get (-5+7)/2 for x, which equals 1 and (4-5)/2 to get -0.5. (1, -0.5) is your answer

7 0
3 years ago
Amy’s age plus Betty’s age is 29 years. Amy’s plus Carl’s age is 27 years. Betty’s plus Carl’s age is 22 years. What is the diff
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Answer: 12

Step-by-step explanation

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3 years ago
Explain how to model the multiplication of –6 and 3 on a number line
Sedaia [141]

Answer:

Multiplication is basically repeating addition

Step-by-step explanation:

So, on a numberline, start at 0 then add -6 three times (since you are multiplying it by three) and you should get -18

5 0
3 years ago
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