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3 years ago

$16 for 4 books. How much would 12 books cost?

Mathematics

2 answers:

HACTEHA [7]3 years ago

8 0

Answer:

192

Step-by-step explanation:

times

SIZIF [17.4K]3 years ago

4 0

Answer:

$48

Step-by-step explanation:

you would first need to find what the cost of 1 book is so

16 divided by 4 is 4

so 1 book is $4

then you would need multiply the cost of one book by 12

so 4 times 12 is 48

so the cost would be $48

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If the operation is defined for all integers a and b by <a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail=

leva [86]

Answer:

(E) I, II and III

Step-by-step explanation:

Given,

[email protected] = a + b - ab ∀ a, b ∈ Z ( set of all integers ),

For solving this question we need to remember the following properties of integers:

Commutative property of addition
Additive identity property of addition
Commutative property of multiplication
Distributive property of multiplication over addition

I. [email protected] = a + b - ab,

[email protected] = b + a - ba = a + b - ab

Thus, [email protected] = [email protected]

II. [email protected] = a + 0 - a × 0

= a + 0 - 0

= a

III. ([email protected])@c = ([email protected])+c - ([email protected])c

= (a + b - ab) + c - (a + b - ab)c

= a + b - ab + c - ac - bc + abc

= a + b + c - ab - bc - ac + abc,

Now, [email protected]([email protected]) = [email protected]( b + c - bc )

= a + (b + c - bc) - a(b+c - bc)

= a + b + c - bc - ab - ac + abc

= a + b + c - ab - bc - ac + abc.

Thus, ([email protected])@c = [email protected]([email protected])

6 0

3 years ago

Need help please and thank you

Norma-Jean [14]

Answer:

The length of XZ is 15 miles.

Step-by-step explanation:

Use Pythagorean Theorem to solve this problem

9² + 12² = C² Simplify the squares

81 + 144 = C² Add on the left side

225 = C² Take the square root of both sides

15 = C

If this answer is correct, please make me Brainliest!

4 0

3 years ago

The object of a popular carnival game is to roll a ball up an incline into regions with different

ELEN [110]

The expected value is the mean of the overall observed value or random value. In other words, it is the average of the observed values.

The expected value, E(x) of the given observation is 185

The given parameters can be represented as:

$\begin{array}{cccc}x & {100} & {200} & {300} \ \\ P(x) & {40\%} & {35\%} & {25\%} \ \end{array}$

The following formula calculates the expected value:

$E(x) =\sum x * P(x)$

So, we have:

$E(x) = 100 * 40\% + 200 * 35\% + 300 * 25\%$

$E(x) = 40 + 70 + 75$

$E(x) = 185$

Read more at:

brainly.com/question/16726343

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3 years ago

Jessie bought a 2-liter bottle of juice. Her sister drank 650 milliliters. How many milliliters were left in the bottle.

Alchen [17]

The best answer is ( 1350 milliliters Because Jessie bought a 2-liters which is 2000 milliliters and her sister drink 650 milliliters so now she have left ( 1350 milliliters

8 0

3 years ago

Read 2 more answers

Given f(x) and g(x) = f(x) + k, use the graph to determine the value of k. A) 2 B) 3 C) 4 D) 5 IF YOU ANSWER IN 5 MINUTES I WILL

andreev551 [17]

Ans k = 4

Step-by-step explanation:

Here g(x) = $\frac{-1}{3}x + 1$ and

f(x) = $\frac{-1}{3} x -3$

Now, g(x) = f(x) + k

or, $\frac{-1}{3}x + 1$ = $\frac{-1}{3} x -3 + k$

or, 1 + 3 = k

So, k = 4 Answer.

8 0

3 years ago