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3 years ago

A. 120 square centimeters

Mathematics

1 answer:

skelet666 [1.2K]3 years ago

8 0

Answer:

Step-by-step explanation:

you could simply do 12 times 10 and then subtract it from 8 times 6 to find your answer. hope this helped :)

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Find the volume of a cube where the length of each side is 6 centimeters.

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3 years ago

Find the constant of proportionality for the table of values and write in the form y = kx

sveta [45]

Answer:

Option 'B' is correct.

Step-by-step explanation:

Since we have given that

Number of lemons used is denoted by 'y'.

Number of glasses of lemonade is denoted by 'x'.

As we can observe that ,

$\frac{6}{24} = \frac{8}{32} = \frac{7}{28} = \frac{2}{8} = \frac{4}{16} = \frac{1}{4} \\$

so we can write i as

$\frac{x}{y} = \frac{1}{4}$

By cross multiplication

So, if write it in the form y=kx,

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7 0

3 years ago

Read 2 more answers

Please help with this. I will give you 5 score

castortr0y [4]

(2x2) + 4((3x2)/2) = 4 + 12 = 16 in^2

4 0

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

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3 years ago

One third of the students in mes. Monroe’s class have pets. One half of these pets are dogs. What part of the students have dogs

Daniel [21]

Answer:

1/6

Step-by-step explanation:

1/3 times 1/2 = 1/6

6 0

3 years ago