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3 years ago

Evaluate x^{3} - 3y when x = -3 and y = 4.

Mathematics

1 answer:

Inessa05 [86]3 years ago

4 0

Answer:

-39

Step-by-step explanation:

Substitute x by - 3 and y by 4

(-3)^3 - 3 *4 = - 39

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1.5x - (x + 3) = 1/3 (9x + 18) - 5

Marysya12 [62]

Answer:

x = -1.6

Step-by-step explanation:

.5x - 3 = 3x + 6 - 5

.5x - 3 = 3x +1

-2.5x = 4

x = -1.6

7 0

3 years ago

Read 2 more answers

A new bank customer with $3,500 wants to open a money market account. The bank is offering a simple interest of 1.6%.

Bond [772]

Answer:

A is $490 and B is 3990

Step-by-step explanation:

The way I solved this is with my last brain cells, you welcome.

4 0

3 years ago

A rectangle and a square have the same perimeter. the rectangle is of length 6cm and has an area of 48cm², find the length of th

EleoNora [17]

<em>The length of the square that has the same perimeter as the rectangle is of length 6cm and area of 48cm² is 7cm</em>

<h2>Explanation:</h2>

Let's call:

$A_{s}:Area \ of \ square \\ \\ A_{r}:Area \ of \ rectangle \\ \\ P_{s}:Perimeter \ of \ square \\ \\ P_{r}:Perimeter \ of \ rectangle$

From the question, we know that:

<em>A rectangle and a square have the same perimeter.</em>

So:

$P_{s}=P_{r}$

Moreover:

<em>The rectangle is of length 6cm and has an area of 48cm²</em>

Accordingly:

$For \ Rectangle: \\ \\ L:Length \\ W:Width \\ \\ A_{r}=L\times W \\ \\ 48=6W \\ \\ W=8$

Also:

$A_{s}=s^2 \\ \\ S:Side \ of \ square$

From the statement of perimeters:

$P_{s}=P_{r} \\ \\ \\ But: \\ \\ P_{s}=4s \\ \\ P_{r}=2W+2L \\ \\ \\ Then: \\ \\ 4s=2W+2L \\ \\ \\ But: \ W=8 \ and \ L=6 \\ \\ 4s=2(8)+2(6) \\ \\ 4s=16+12 \\ \\ 4s=28 \\ \\ \boxed{s=7cm}$

Finally, <em>the length of the square that has the same perimeter as the rectangle is of length 6cm and area of 48cm² is 7cm</em>

<h2>Learn more:</h2>

Perimeter: brainly.com/question/9969486

#LearnWithBrainly

6 0

3 years ago

Find the area of the polygon below.

Rama09 [41]

Answer:

assuming each square equals 1 the answer would be 29

8 0

3 years ago

A number is chosen at random from a set

Arada [10]

The probability that the chosen number selected satisfies the given condition is given below.

<h3>What is Probability?</h3>

Probability is the measure of the likeliness of an event to happen.

The probability has a range from 0 to 1, 0 denotes uncertainty, and 1 indicates certainty.

The set is numbers from 1 to 50.

The chosen number is not a perfect square,

The perfect square numbers are 1, 4, 9, 16, 25, 36, and 49.

The chosen number is not a perfect square, 50 - 7 = 43.

The probability that the chosen number is not a perfect square = 43/50

It is not a multiple of 4

Multiples of 4 are 4,8,12,16,20,24,28,32,36,40,44,48 are 12 numbers

The chosen number is not a multiple of 4 = 50 -12 = 38

The probability that the chosen number is not a multiple of 4 = 38/50

It is more than 45.

The number more than 45 is 5

The probability that the chosen number is more than 45 is,

= 5/50

= 1/10

It is not more than 45.

The number not more than 45 is 45.

The probability that the chosen number is not more than 45 is,

= 45/50

= 9/10

To know more about Probability

brainly.com/question/11234923

#SPJ1

4 0

2 years ago