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3 years ago

Solve for y a. 4x + 5y = 25

Mathematics

1 answer:

AfilCa [17]3 years ago

5 0

Answer:

y = -4/5x + 5

Step-by-step explanation:

In order to solve for y, we need to isolate the variable. First, let's subtract 4x on each side. After doing said step, we should now have this equation:

5y = -4x + 25

Next, we need to divide 5 on each side, giving us this new equation:

y = -4/5x + 5

There you go! Let me know if I did anything wrong ^-^

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I WILL AWARD BRAINLIEST!! PLEASE HELP!!!

Firlakuza [10]

Answer:

C. 120°

Step-by-step explanation:

Let angle A be x, then angle C is 2x

The sum of the angles in ABC is

A + B+ C = 180

x+90 +2x = 180

3x +90 = 180

3x= 90

Divide by 3

x = 90/3

x = 30

Angle A = 30, Angle C = 2x = 60

AH = BH, so it is an isosceles triangle . That means A and ABH are equal

A = 30 , ABH = 30

The sum of the angles in ABH must equal 180

A + ABH + BHA = 180

30 + 30 + BHA = 180

60 + BHA = 180

BHA = 180-60

BHA = 120

5 0

4 years ago

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I’ll mark you if it’s right.

Kamila [148]

Answer:

(-3, -1)

If you rotate 180, you just flip the signs.

6 0

3 years ago

1. (12 points) The tennis team at Taft High School has 8 players, and the tennis team at McKinley High School has 7 players. Reb

Marta_Voda [28]

Complete Question

1. (12 points) The tennis team at Taft High School has 8 players, and the tennis team at McKinley High School has 7 players. Rebecca is on the team at Taft, and her sister Leah is on the team at McKinley. The two teams are going to play a tournament with 4 rounds. In each round, one player from Taft will play a match against one player from McKinley. Each player can play in at most one match. A schedule for the tournament consists of an ordered list of the names of the players from each school who will play in each of the four rounds. The schedule does not include the results of each match.

(a) How many schedules are there?

(b) How many schedules include neither sister?

Answer:

$N = 1,411,200$

$M = 302, 400$

Step-by-step explanation:

From the question we are told that

The number of players in Taft High School is t = 8

The number of players in McKinley High School is k = 7

The number of rounds is n = 4

The highest number of match each player can play is w = 1

Generally the total number of schedules is

$N = ^tP_4 * ^k P_4$

$N = ^8P_4 * ^7 P_4$

=> $N = \frac{8!}{(8-4)!} * \frac{7!}{(7-4)!}$

=> $N = \frac{8!}{4!} * \frac{7!}{3!}$

=> $N = \frac{8*7 *6*5*4*3*2*1}{4*3*2*1} * \frac{7*6*5*4*3*2*1}{3*2*1}$

=> $N = 1,411,200$

Generally the number of schedules that include neither of the sisters is mathematically represented as

$M= \ ^{t-1}P_4 *\ ^ {k-1} P_4$

$M= \ ^{8-1}P_4 *\ ^ {7-1} P_4$

=> $M= \ ^{7}P_4 *\ ^ {6} P_4$

=> $M = \frac{7!}{(7-4)!} * \frac{6!}{(6-4)!}$

=> $M = \frac{7!}{3!} * \frac{6!}{2!}$

=> $M = \frac{7 *6*5*4*3*2*1}{3*2*1} * \frac{6*5*4*3*2*1}{2*1}$

=> $M = 302, 400$

8 0

3 years ago

A surveyor is studying a map of the community and is using vectors to determine the distance between two schools. On the map, th

user100 [1]

Answer:

Option C

Step-by-step explanation:

From the question we are told that

Co-ordinate of school A =(7,12)

Co-ordinate of school B =(-21,-13)

Generally the sum of the vector is mathematically represented

$(A+B)=(-21-7,-13-12)$

$(A+B)=(-28,-25)$

Generally the actual distance between the schools is mathematically given as

$d=\sqrt{-28^2+-25^2}$

$d=\sqrt{1409}$

$d=37.5366 \approx 37.537m$

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3 years ago

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Paul's dad made a turkey pot pie for dinner on Wednesday the family ate 4/8 of the pie. on Thursday after school,Paul ate 2/16 o

Drupady [299]

You would add the 2 fractions. Since 2/16 equals 1/8 you could add 1/8 plus 4/8. That will give you 5/8. After all that you subtract 5/8 from 8/8, which will give you 3/8.

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3 years ago

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