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2 years ago

Each container below describes a ratio of marbles.

Mathematics

2 answers:

klio [65]2 years ago

7 0

Answer:

Step-by-step explanation:

bro that is easy first box will have 4 red 1 blue, second would have 3 reed 2 blue, last one would be 4 blue 1 red

Aleonysh [2.5K]2 years ago

4 0

Answer:

first box 4 red 1 blue second box 3 red 2 blue third box 4 blue 1 red

Step-by-step explanation:

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The temperature in an oven changes from 350 degrees to 362 degrees. What is the percent increase in temperature, to the nearest

Aleksandr-060686 [28]

Answer:

it's 3.4%

Step-by-step explanation:

You take the difference of 362 and 350 (which is 12) and divide it by the starting number (350) getting you 3.4

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2 years ago

Martin earned the following scores on his last five tests.

Arada [10]

IQR= 18 is the interquartile range of his scores.

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3 years ago

a builder buys 24.5 acres of land to develop a new community of homes and parks the builder plans to use 0.25 of the land and pa

Elena-2011 [213]

24.5 x 0.25 = 6.125 acres that will be used for the new park.

24.5 x .72 = 17.65 acres in the second property

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3 years ago

Read 2 more answers

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

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2 years ago

What is the measure of each angle in the Summer Triangle

bogdanovich [222]

Answer:

IDk

Step-by-step explanation:

I have no idea

7 0

3 years ago