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3 years ago

6

If f(x) = 16x2 - 20x, what is the value of 13)?

1 answer:

aksik [14]3 years ago

6 0

I don’t get this question right here

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Graphing Polynomial Functions

Mekhanik [1.2K]

Answer:

table and graph attached

Step-by-step explanation:

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3 years ago

Does any body know how to prove a parallelogram with statements and reasons

murzikaleks [220]

Because the lines are parallel,

The width of that rhombus, or parallelogram.

If you conutined that line, they will never ever touch.

That is the meaning of parallel, and why it is a parallelogram.

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3 years ago

Let R be the relation on the set of ordered pairs of positive integers such that ((a, b), (c, d)) ∈ R if and only if ad = bc. Ar

Veseljchak [2.6K]

Answer:

The given relation R is equivalence relation.

Step-by-step explanation:

Given that:

$((a, b), (c, d))\in R$

Where $R$ is the relation on the set of ordered pairs of positive integers.

To prove, a relation R to be equivalence relation we need to prove that the relation is reflexive, symmetric and transitive.

1. First of all, let us check reflexive property:

Reflexive property means:

$\forall a \in A \Rightarrow (a,a) \in R$

Here we need to prove:

$\forall (a, b) \in A \Rightarrow ((a,b), (a,b)) \in R$

As per the given relation:

$((a,b), (a,b) ) \Rightarrow ab =ab$ which is true.

$\therefore$ R is reflexive.

2. Now, let us check symmetric property:

Symmetric property means:

$\forall \{a,b\} \in A\ if\ (a,b) \in R \Rightarrow (b,a) \in R$

Here we need to prove:

$\forall {(a, b),(c,d)} \in A \ if\ ((a,b),(c,d)) \in R \Rightarrow ((c,d),(a,b)) \in R$

As per the given relation:

$((a,b),(c,d)) \in R$ means $ad = bc$

$((c,d),(a,b)) \in R$ means $cb = da\ or\ ad =bc$

Hence true.

$\therefore$ R is symmetric.

3. R to be transitive, we need to prove:

$if ((a,b),(c,d)),((c,d),(e,f)) \in R \Rightarrow ((a,b),(e,f)) \in R$

$((a,b),(c,d)) \in R$ means $ad = cb$ .... (1)

$((c,d), (e,f)) \in R$ means $fc = ed$ ...... (2)

To prove:

To be $((a,b), (e,f)) \in R$ we need to prove: $fa = be$

Multiply (1) with (2):

$adcf = bcde\\\Rightarrow fa = be$

So, R is transitive as well.

Hence proved that R is an equivalence relation.

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3 years ago

I need to know how to write this as a decimal with all the steps and everything plzz

Crank

You divide the denominator into the numerator and that will get your answer which is 7.

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3 years ago

A type of green paint us made by mixing 2 cups of yellow with 3.5 cups of blue.

grigory [225]

Mix 0.5 cups of yellos and 2 cups of blue

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3 years ago

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