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Furkat [3]
1 year ago
8

Given two points of a line, find its slope. (3, 1), (7,4)

Mathematics
1 answer:
SpyIntel [72]1 year ago
7 0

Answer:

3/4 is the slope

Step-by-step explanation:

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A piece of wire of length 7070 is​ cut, and the resulting two pieces are formed to make a circle and a square. Where should the
lyudmila [28]

Answer:

a.x=39.2

b.Use whole  wire as a circle

Step-by-step explanation:

We are given that

Length of piece of wire=70  units

Let length of wire used to make a square =x units

Length of wire used in circle=70- x

Side of square=\frac{perimeter\;of\;square}{4}=\frac{x}{4}

Circumference of circle=2\pi r

70-x=2\pi r

r=\frac{70-x}{2\pi}

Combined area of circle and square,A=(\frac{x}{4})^2+\pi(\frac{70-x}{2\pi})^2

Using the formula

Area of circle=\pi r^2

Area of square=(side)^2

a.A=\frac{x^2}{16}+\frac{4900+x^2-140x}{4\pi}

Differentiate w.r.t x

\frac{dA}{dx}=\frac{x}{8}+\frac{2x-140}{4\pi}

\frac{dA}{dx}=0

\frac{x}{8}+\frac{2x-140}{4\pi}=0

\frac{\pi x+4x-280}{4\pi}=0

\pi x+4x-280=0

x(\pi+4)=280

x=\frac{280}{\pi+4}

x=39.2

Again differentiate w.r.t x

\frac{d^2A}{dx^2}=\frac{1}{8}+\frac{1}{2\pi}>0

Hence, the combined area of circle and the square is minimum at x=39.2

b.When the wire is not cut and whole wire used  as a circle . Then, combined area is maximum.

3 0
3 years ago
I need helppp please does anyone know this?
Step2247 [10]

Answer:

560m³

Step-by-step explanation:

Cuboid : length = 16, width = 5, height = 4

Prism : base = 16, perpendicular height = 6, height = 5

V = volume cuboid + volume prism

V = 16 x 5 x 4 + (16 x 6 : 2 x 5) = 560m³

3 0
3 years ago
What is the answer to 12 + 35 + 24 + 56 + 92 + 16 + 23 x 23 x 45 x 0 ?
8_murik_8 [283]
I will come back to this when I am older
7 0
2 years ago
Which expression is equivalent to (5^-2)(5^-1)
nadya68 [22]
The rule for multiplying similar bases with exponents:

(a^b)(a^c)=a^(b+c)

In this case we have:

(5^-2)(5^-1)

5^(-2-1)

5^(-3)

The rule for negative exponents:

a^(-b)=1/(a^b)

So in this case:

5^(-3) is equal to 

1/(5^3)

1/125
5 0
3 years ago
Read 2 more answers
PLS HELP ««««««««««««««««««««««««««««««««««««««««««««««««««««««««««««««««««««««
Kamila [148]

Answer:

x-intercept (2,0) or x=2

y-intercept (0,-4)  or y=-4

Step-by-step explanation:

4x-2y>8

2x-y>4

2x-4>y

y<2x-4

y=2x-4

when y=0

2x=4

x=2

x-intercept is (2,0)

and y-intercept is (0,-4)

put x=0,y=0

0-0>8

or 0>8 which is not true. so (0,0) does not lie on the graph.

so graph lies  right of the line .

7 0
3 years ago
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