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3 years ago

2

Mathematics

1 answer:

nadezda [96]3 years ago

4 0

Answer:

Area = 559.17 sq ft

Step-by-step explanation:

Area (rectangle) = 18 x 24 = 432

Area (semi-circle = πr²÷2 = 81π/2 = 127.17

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Sharon bought 100/300/100 policy with a $100 deductible on collision and $100 deductible on comprehensive coverage.

Ronch [10]

The answer would be 1,928.85

8 0

3 years ago

Hello does anyone know how to solve this?

Radda [10]

Hello from MrBillDoesMath!

Answer: 2 ^ -4 ( = 1/16)

Discussion:

- 4 log {8} 2 {8} is used instead of subscript notation

Basic property of logarithms is that exponents become multipliers and vice versa:

-4 log {8} 2 = log {8} (2^ -4)

Thank you,

MrB

5 0

3 years ago

7) You can buy 5 cans for green beans at the Village Market for $3.20. You can buy 10

Bad White [126]

Sam’s club because with the deal each can would be about $1.27 whereas at village market each can would be about $1.56

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3 years ago

For each of the following functions, determine if they are injective. Also determine if theyare surjective. Also determine if th

timurjin [86]

Answer:

Check below

Step-by-step explanation:

1. Definition for intervals

$(a,b)=\left \{ x\in\Re : a$

2. Functions

1) $\Re \rightarrow \Re \\ f(x)=x$

Let's perform graph tests.

That's an one to one, injective function. Look how any horizontal line touches that only once. Also, It's a surjective and a bijective one.

2) $\Re\geq0\rightarrow\Re , f(x)=x+1\\$

Injective, surjective and bijective.

Injective: a horizontal line crosses the graph in one point.

3) $f:\Re\geq 0\rightarrow\Re, f(x) = cos(x)$

The cosine function is not injective, bijective nor surjective.

4) $f:\Re\rightarrow\Re \:f(x)=ex$

Since e, is euler number it's a constant. It's also injective, surjective and bijective.

5) Quite unclear format

$6) \:f:\Re\rightarrow(0,\infty), f(x) =ex$

Despite the Restriction for the CoDomain, the function remains injective, surjective and therefore bijective.

$7) f:\Re\geq 0 \rightarrow \Re\geq0, f(x) =x^{4}$

Not injective nor surjective therefore not bijective too.

$8).f:\{-1,2,-3\}}\rightarrow \{1,4,9\}, f(x) =x^{2}$

$f(-1)=1, f(2)=4, f(-3)=9$

Injective (one to one), Surjective, and Bijective.

$10) f:\Re\geq 0\rightarrow [-1,1], f(x)= cos(x)\\-1=cos(x) \therefore x=\pi,3\pi,5\pi,etc.$

Surjective.

$11.f:R\geq 0[-1,1], f(x) = 0\\$

Surjective

12.f: US Citizens→Z, f(x) = the SSN of x.

General function

13.f: US Zip Codes→US States, f(x) = The state that x belongs to.

Surjective

7 0

3 years ago

How much money is a $210 increased by 40%

KengaRu [80]

When you increase something by 40%, multiply the something by 1.4

210*1.4=294

The answer is $294

Hope this helps!

8 0

4 years ago

Read 2 more answers