All categories

3 years ago

A rectangular parking lot has

Mathematics

2 answers:

svetlana [45]3 years ago

7 0

Answer:

length: 85

width: 40

Step-by-step explanation:

length: 2w + 5

width: w

perimeter = 2L + 2W

250 = 2(2w + 5) + 2w

250 = 4w + 10 + 2w

250 = 6w + 10

240 = 6w

w = 40

length: 2(40) + 5 = 85

width: 40

oksano4ka [1.4K]3 years ago

6 0

Answer:

Step-by-step explanation:

180 yards :)

You might be interested in

You want to put $2,500 in a simple interest account. It has a 4% annual interest rate. How long will it take you to earn $200 in

Nadya [2.5K]

The formula is
I=prt
I interest earned 200
P principle 2500
R interest rate 0.04
T time ?
We need to solve for t
T=I÷pr
T=200÷(2,500×0.04)
T=2years

Hope it helps

6 0

3 years ago

Which term describes the dotted line in the quadrilateral?

Tasya [4]

The correct answer is C diagonal

7 0

3 years ago

a spherical balloon is deflated at a rate of 256pi/3 cm^3/sec. at what rate is the radius of the balloon changing when the radiu

Hunter-Best [27]

What you need to look for is $\frac { dr }{ dt }$ when r=8.

Now:

$Volume\quad of\quad a\quad sphere:\\ \\ V=\frac { 4 }{ 3 } \pi { r }^{ 3 }$

$\therefore \quad \frac { dV }{ dr } =\frac { 4 }{ 3 } \pi \cdot 3{ r }^{ 2 }=4\pi { r }^{ 2 }\\ \\ \therefore \quad \frac { dr }{ dV } =\frac { 1 }{ \frac { dV }{ dr } } =\frac { 1 }{ 4\pi { r }^{ 2 } }$

$And:\\ \\ \frac { dV }{ dt } =-\frac { 256\pi }{ 3 } \\ \\ Therefore:\\ \\ \frac { dr }{ dt } =\frac { dr }{ dV } \cdot \frac { dV }{ dt }$

$\\ \\ =\frac { 1 }{ 4\pi { r }^{ 2 } } \cdot -\frac { 256\pi }{ 3 } \\ \\ =-\frac { 256 }{ 12 } \cdot \frac { \pi }{ \pi } \cdot \frac { 1 }{ { r }^{ 2 } }$

$\\ \\ =-\frac { 64 }{ 3{ r }^{ 2 } } \\ \\ When\quad r=8,\\ \\ \frac { dr }{ dt } =-\frac { 64 }{ 3\cdot { 8 }^{ 2 } } =-\frac { 1 }{ 3 } \\ \\ Answer:\quad -\frac { 1 }{ 3 } \quad cm/sec$

3 0

3 years ago

PLEASE HELP<br><br> 4 1/3 - 2 1/4

ElenaW [278]

Answer:

4 1/3 - 2 1/4 = 25/12 or 2 1/12

Step-by-step explanation:

6 0

3 years ago

What is the fewest number of expressions that a equation can contain?

nlexa [21]

The fewest number of expressions is 3.