3 years ago

What is the result of subtracting the second equation from the first?

Mathematics

2 answers:

-Dominant- [34]3 years ago

5 0

Answer:

12y = -7

Step-by-step explanation:

Since I find it difficult to properly align parts of the equation for a vertical presentation, I like to show the difference as the difference of the left side being equal to the difference of the right side:

(2x +7y) -(2x -5y) = (-8) -(-1)

x(2 -2) +y(7 -(-5)) = -8 +1

12y = -7 . . . . the difference of the equations

Delvig [45]3 years ago

4 0

Answer: 12y=-7

Step-by-step explanation:

You might be interested in

Julia owns a coffee shop. She experimented with mixing City Roast Colombian coffee that costs $7.80 per pound with French Roast

Over [174]

Answer:

Step-by-step explanation:

x = City Roast Colombian coffee

y = French Roast Colombian coffee

x + y = 20

6 0

2 years ago

Read 2 more answers

Evaluate 5(x+y); use x=1,and y=1

miskamm [114]

Answer:

5 (1+1)=5 (2)=10

Step-by-step explanation:

you just substitute both X and Y with 1 and calculate it

5 0

3 years ago

Read 2 more answers

Please help me as quick as you can I really need this thank yu sm

Rama09 [41]

It would be 5 because 5+4=9 and 9>8 (9 is greater than 8)

8 0

2 years ago

Someone help -2/5 x 1/4 x 1/5

kari74 [83]

Answer:

Lol i got u homie!

-0.02

(Sorry if that wasn't a fraction but hopefully this helps)

Step-by-step explanation:

7 0

2 years ago

There are 30 students in Mrs. Woodward’s class, and 1/5 of the class has their own cell phone. Of this group of students, 1/2 of

olga_2 [115]

Answer:

3 students

Step-by-step explanation:

There are 30 students in Mrs. Woodward’s class.

$\dfrac{1}{5}$ of the class has their own cell phone, so

$\dfrac{1}{5}\cdot 30=\dfrac{1}{5}\cdot \dfrac{30}{1}=6$

students have their own cell phones.

$\dfrac{1}{2}$ of those 6 students are allowed to use social media. So,

$\dfrac{1}{2}\cdot 6=\dfrac{1}{2}\cdot \dfrac{6}{1}=3$

students are allowed to use social media.

3 0

2 years ago