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3 years ago

8

Hey friends answer this please Please give the letter choice

1 answer:

Aliun [14]3 years ago

8 0

$1.2\cdot 10^{-3}-2.0\cdot 10^{-4}=1.2\cdot 10^{-3}-0.20\cdot 10^{-3}\\\\=1.0\cdot 10^{-3}$

The appropriate choice is ...

... D) 1.0×10⁻³ inch

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Solve the for variable<br><br><br>c+7=13<br><br><br>c = ?

nika2105 [10]

Answer:

c=6

Step-by-step explanation:

c+7=13

-7 -7

c=13-7

c=6

7 0

3 years ago

A rancher wants to fence in an area of 1500000 square feet in a rectangular field and then divide it in half with a fence down t

VLD [36.1K]

Answer:

6000 ft

Step-by-step explanation:

Let length of rectangular field=x

Breadth of rectangular field=y

Area of rectangular field= $1500000$ square ft

Area of rectangular field= $l\times b$

Area of rectangular field= $x\time y$

$1500000=xy$

$y=\frac{1500000}{x}$

Fencing used ,P(x)= $x+x+y+y+y=2x+3y$

Substitute the value of y

P(x)= $2x+3(\frac{1500000}{x})$

$P(x)=2x+\frac{4500000}{x}$

Differentiate w.r.t x

$P'(x)=2-\frac{4500000}{x^2}$

Using formula: $\frac{dx^n}{dx}=nx^{n-1}$

$P'(x)=0$

$2-\frac{4500000}{x^2}=0$

$\frac{4500000}{x^2}=2$

$x^2=\frac{4500000}{2}=2250000$

$x=\sqrt{2250000}=1500$

It is always positive because length is always positive.

Again differentiate w.r.t x

$P''(x)=\frac{9000000}{x^3}$

Substitute x=1500

$P''(1500)=\frac{9000000}{(1500)^3}>0$

Hence, fencing is minimum at x=1 500

Substitute x=1 500

$y=\frac{1500000}{1500}=1000$

Length of rectangular field=1500 ft

Breadth of rectangular field=1000 ft

Substitute the values

Shortest length of fence used= $2(1500)+3(1000)=6000 ft$

Hence, the shortest length of fence that the rancher can used=6000 ft

3 0

3 years ago

Which are solutions of the equation 4x2 - 7x = 3x + 24? Check all that apply.

riadik2000 [5.3K]

Answer:

all work is shown and pictured

4 0

3 years ago

(n · 0.1) ÷ 3 = 0.1<br> What's N?

Ber [7]

N*0.1=0*1.3
n=0.3/0.1
n=3

7 0

3 years ago

Read 2 more answers

Please help me asap!!!

kolezko [41]

Answer:

The answer is A $100

Step-by-step explanation:

since 0 deposits is $50 and 1 deposit is $150

you do 150-50 which is 100

4 0

3 years ago