If you can help me ASAP that would be great!

Mathematics

2 answers:

erastovalidia [21]4 years ago

8 0

Answer is [F and N]

4 is absolute. -4 in absolute form is 4.

irina [24]4 years ago

5 0

D, the absolute value is basically just taking a positive number and adding a negative sign to it, or taking a negative number and taking off the negative sign. These things happen with 4 and -4 so that would be your answer!

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Solve a, b, c, & d please & I will mark you as Brainliest.

laila [671]

Answer:

Step-by-step explanation:

$a) -2x-3y=5\\-5x+3y=-40\\-7x=-35\\x=5, y=-5\\\\b)5x+6y=-14\\x-2y=10\\Considering\ equation\ 2,\\3(x-2y)=3(10)\\3x-6y=30\\Hence,\\5x+6y=-14\\3x-6y=30\\8x=16\\x=2, y=-4\\\\c) -3x+3y=21\\-x-5y=-17\\Considering\ equation\ 2,\\3(-x-5y)=3(-17)\\-3x-15y=-51\\Hence, subtracting\ both\ the\ equations\ we\ get,\\-3x+3y=21\\3x+15y=51\\18y=72\\y=4, x=-3$

d) Let the cost of one group lesson be x and one private lesson be y

$12x+2y=110\\10x+3y=125\\By\ multiplying\ the\ first\ equation\ with\ -1.5\ in\ this\ system\ we\ get,\\-1.5(12x+2y)=-1.5(110)\\-18x-3y=-165\\Hence,\ by\ adding\ both\ the\ equations\ we\ get,\\-18x-3y=-165\\10x+3y=125\\-8x=-40\\x=5,y=25$

8 0

4 years ago

Read 2 more answers

Joe is riding his bicycle. he takes 6 hours to ride 38.4 kilometers. what is his speed?

Iteru [2.4K]

Let's get the data out of the problem:

d = 38.4 km

t = 6 h

Now, we can apply in this equation and find his speed:

v = d / t

v = 38.4 / 6

v = 6.4 km/h

Joe has a speed of 6.4 km/h.

Hope it helps.

5 0

4 years ago

Help. Fully explain plz

frozen [14]

110/55 is what u get if u add them all up

7 0

3 years ago

Read 2 more answers

Abigail has 5 cousins her friend suki has 3 fewer than 4 times as many cousions as abigail has write an expression for the numbe

Vesna [10]

5=(5 x 4)-3

Hope I helped! Sorry if I'm wrong!