All categories

3 years ago

I need it today please help me

Mathematics

2 answers:

Angelina_Jolie [31]3 years ago

6 0

A.
perimeter: 14.3+12+14 = 40.3 yrds
area: (14X11)/2 = 77 yrds^2

b.
perimeter: 20+25+15 = 60 ft
area: (25X12)/2 = 150 ft^2

MakcuM [25]3 years ago

5 0

Answer:

a. Perimeter=40yds Area=77 square yds

b. Perimeter=60 yds Area=150 square yds

Step-by-step explanation:

You might be interested in

Convert,the complex number into polar form: 4+4i

kow [346]

Z = a + bi
z = 4 + 4i

r² = a² + b²
r² = (4)² + (4)²
r² = 16 + 16
r² = 32
r = 4√(2)
r = 4(1.414)
r = 5.656

$cos\theta = \frac{a}{r}$
$cos\theta = \frac{4}{4\sqrt{2}}$
$cos\theta = \frac{4}{4\sqrt{2}} * \frac{\sqrt{2}}{\sqrt{2}}$
$cos\theta = \frac{4\sqrt{2}}{4\sqrt{4}}$
$cos\theta = \frac{4\sqrt{2}}{4(2)}$
$cos\theta = \frac{4\sqrt{2}}{8}$
$cos\theta = \frac{\sqrt{2}}{2}$
$2(cos\theta) = 2(\frac{\sqrt{2}}{2})$
$2cos\theta = \sqrt{2}$
$2cos\theta = 1.414$

$sin\theta = \frac{b}{r}$
$sin\theta = \frac{4}{4\sqrt{2}}$
$sin\theta = \frac{4}{4\sqrt{2}} * \frac{\sqrt{2}}{\sqrt{2}}$
$sin\theta = \frac{4\sqrt{2}}{4\sqrt{4}}$
$sin\theta = \frac{4\sqrt{2}}{4(2)}$
$sin\theta = \frac{4\sqrt{2}}{8}$
$sin\theta = \frac{\sqrt{2}}{2}$
$2(sin\theta) = 2(\frac{\sqrt{2}}{2})$
$2sin\theta = \sqrt{2}$
$2sin\theta = 1.414$

z = a + bi
z = rcosθ + (rsinθ)i
z = r(cosθ + i sinθ)

z = 4 + 4i
z = 5.656cosθ + (5.656sinθ)i
z = 5.656(cosθ + i sinθ)
z = 5.656(cos45 + i sin45)

$\theta = tan^{-1}\frac{b}{a}$
$\theta = tan^{-1}\frac{4}{4}$
$\theta = tan^{-1}(1)$
$\theta = 45$

The polar form of 4 + 4i is approximately equal to 5.656(cos45 + i sin45).

5 0

3 years ago

-19-(k + 7) + 10k I need help on this you have to simplify the expression

Step2247 [10]

Answer: =9k−26

Step-by-step explanation:

3 0

2 years ago

Escribe los números que faltan para completar las siguientes operaciones

AURORKA [14]

Answer:

9 x 4

7 x 3

-5 x 8

-10 x +10

eso es todo lo que puedo hacer baby

Step-by-step explanation:

5 0

3 years ago

100pts to answer this math (statistics/probability) question.

nalin [4]

a = 8 - a train arrives at the station once every 8 minutes, so for any given 8 minute interval, a randomly selected train has uniform probability of arriving at the station at some point in this time.

f(x) = 1/8 - the area under the graph of f(x) must be equal to 1. This area corresponds to a rectangle with length a = 8 and height x such that 8x = 1. Solving for x gives 1/8.

P = 5/8 - this is equal to the area under the graph over the interval [0, 5], which is the area of a rectangle with length 5 and height 1/8.

7 0

3 years ago

What's the answer??? Help me asap

Angelina_Jolie [31]

I know b, d, and f for sure. Defiantly not c.

6 0

3 years ago

Read 2 more answers