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3 years ago

5

Sue has 20 biscuits in a tin.

1 answer:

Julli [10]3 years ago

5 0

Answer:

$\frac{111}{190}$

Step-by-step explanation:

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Suppose that the functions u and w are defined as follows.

jasenka [17]

Answer(there are assumptions for this answer that you need to confirm and look at):

Assumptions: $u(x)=x^2+3$ and $w(x)=\sqrt{x+2}$

Answer if the operation is multiplication:

If you meant a closed dot which is the symbol for multiplication.

$(u \cdot w)(2)=14$

$(w \cdot u)(2)=14$

Answer if the operation is composition:

If you meant an open dot which is the symbol for composition.

$(u \circ w)(2)=7$

$(w \circ u)(2)=3$

Note: I don't know if you actually meant $w(x)=\sqrt{x+2}$ or if $w(x)=\sqrt{x}+2$ . Please let me know one way or the other.

Step-by-step explanation:

If we assume the functions are:

$u(x)=x^2+3$

$w(x)=\sqrt{x+2}$

$u \cdot w=w \cdot u$ since multiplication is commutative.

$u(2)=2^2+3$

$u(2)=4+3$

$u(2)=7$

$w(2)=\sqrt{2+2}$

$w(2)=\sqrt{4}$

$w(2)=2$

We are asked to find $(u \cdot w)(2)$ and $(w \cdot u)(2)$ .

The order doesn't matter in multiplication.

$(u \cdot w)(2)$

$u(2) \cdot w(2)$

$7 \cdot 2$

$14$

$(w \cdot u)(2)$

$w(2) \cdot u(2)$

$2 \cdot 7$

$14$

Now you might have meant composition which symbolized with an open circle, not a closed one.

$(u \circ w)(2)$

$u(w(2))$

$u(2)$ since $w(2)=2$

$2^2+3$

$4+3$

$7$

$(w \circ u)(2)$

$w(u(2))$

$w(7)$ since $u(2)=7$

$\sqrt{7+2}$

$\sqrt{9}$

$3$

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4 years ago

How are (5.3,1) and (-5.3,1) related?

OleMash [197]

Answer:

i think because theyre like terms, im not sure tho

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3 years ago

Solve the proportion t+4 / t-2 = 1/4

Lera25 [3.4K]

t+4 / t-2 = 1/4

t=-6 for your answer!

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4 years ago

Solve (x+4)(x−6)(x−10)=0, for x.

Pavel [41]

ZEROS: -4,6,10 are the answers to x

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3 years ago

If a patient dosage decrease by 25 milligram per day ,how much change will it be in a week?

timofeeve [1]

After one week it will be a total decrease of 175 milligrams

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