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4 years ago

ANYONE PLEASE HEEEEEEELLLLLLLPPPPPP!!!!! WILL GIVE BRAINLIEST!!!

Mathematics

2 answers:

nadezda [96]4 years ago

7 0

Answer:

12x⁴ - 15x³ + 18x²

Step-by-step explanation:

1. distribute -3x²

-3x² • 5x = -15x³

-3x² • -4x² = 12x⁴

-3x² • -6 = 18x²

2. combine terms and put in descending order (standard form)

12x⁴ - 15x³ + 18x²

d1i1m1o1n [39]4 years ago

7 0

Answer:

12x⁴ - 15x³ + 18x²

Step-by-step explanation:

1. distribute -3x²

-3x² • 5x = -15x³

-3x² • -4x² = 12x⁴

-3x² • -6 = 18x²

2. combine terms and put in descending order (standard form)

12x⁴ - 15x³ + 18x² correct answer would be this

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Chicken breasts are sold for $2.99 per pound. One pack contains 1.59 pounds; how much does the pack cost?

makkiz [27]

Answer:

$4.75

Step-by-step explanation:

Since one pound costs $2.99, and one pack contains 1.59 pounds, you multiply $2.99 by 1.59 pounds which should give you approximately $4.75

8 0

3 years ago

I need help please ): !

ivanzaharov [21]

Answer:

BC=54, DE=27

Step-by-step explanation:

(7x-1)2=16x-10

x=4

7(4)-1=27

16(4)-10=54

7 0

3 years ago

Determine how many different computer passwords are possible if (a) digits and letter so can be repeated and (b) digits and lett

Lerok [7]

Answer:

a) 1,188,137,600 different passwords.

b) 710,424,000 different passwords.

Step-by-step explanation:

We have a code of 2 digits followed by 5 letters.

First, the total number of digits is 10

The total number of letters is 26.

Then:

a) Digits and letters can be repeated.

Here we need to count the number of options for each selection.

For the first digit, we have 10 options.

For the second digit, we have 10 options.

For the first letter, we have 26 options.

For the second letter, we have 26 options.

For the third letter, we have 26 options.

For the fourth letter, we have 26 options.

For the fifth letter, we have 26 options.

The total number of combinations will be equal to the product of the number of options. We get:

Combinations = 10*10*26*26*26*26*26 = (10^2)*(26^5) = 1,188,137,600

This means that we have 1,188,137,600 different possible passwords.

b) Digits and letters can not be repeated.

We start in the same way as above:

For the first digit, we have 10 options.

For the second digit, we have 9 options, because one is already used.

For the first letter, we have 26 options.

For the second letter, we have 25 options, because one letter is already used.

For the third letter, we have 24 options, because 2 letters are already used.

For the fourth letter, we have 23 options, because 3 letters are already used.

For the fifth letter, we have 22 options, because 4 letters are already used.

Then the total number of combinations is:

Combinations = 10*9*26*25*24*23*22 = 710,424,000

So if we can not repeat digits nor letters, we can make 710,424,000 different passwords,

8 0

3 years ago

Sylvie finds the solution to the system of equations by graphing.

kherson [118]

Answer:

From the graph, it is clear that both lines intersect

at x=0 and y=2/3 or (0.667)

Therefore, the solution is: (x, y) = (0, 2/3) or (0, 0.667)

Step-by-step explanation:

Given the system of equations

y=2/3x+1 and y = -2/3 x-1

<u><em>GRAH AND POINT OF INTERSECTION (SOLUTION) </em></u>

The solution graph is attached below.

From the attached solution graph,

The red line is representing the equation y=2/3x+1

The blue line is representing the equation y = -2/3 x-1

From the graph, it is clear that both lines intersect

at x=0 and y=2/3 or (0.667)

Thus, the point of intersection is (x, y) = (0, 2/3) or (0, 0.667)

Therefore, the solution is: (x, y) = (0, 2/3) or (0, 0.667)

5 0

3 years ago

Jessica Jones $425 per week working at a hair salon the weekly expenses are $93.50. What percentage of weekly income goes to pay

AysviL [449]

Answer:

22%

Step-by-step explanation:

22% of 425 is 93.5

This means that 22% of her weekly income goes to paying her weekly expenses.

Hope this helped!!

Please leave a thanks and a rating!

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3 0

3 years ago