All categories

2 years ago

Solve the system of equations - x - y = 6 and 5x -7y=66 by combining the equations

Mathematics

1 answer:

DIA [1.3K]2 years ago

7 0

Answer: Let's solve for x.

−x−y=6

Step 1: Add y to both sides.

−x−y+y=6+y

−x=y+6

Step 2: Divide both sides by -1.

−x

−1

y+6

−1

x=−y−6

Answer:

x=−y−6

Let's solve for x.

5x−7y=66

Step 1: Add 7y to both sides.

5x−7y+7y=66+7y

5x=7y+66

Step 2: Divide both sides by 5.

7y+66

Answer:

Step-by-step explanation:

You might be interested in

Math Help

Slav-nsk [51]

Answer:

exponential growth function

Step-by-step explanation:

exponential growth function because the numbers are positive so it'll go up idk the number but until somebody else answers you can do process of elimination

3 0

3 years ago

Read 2 more answers

Good Stuff is giving away free pens to each of the first 200 people who come in the store today. In the first hour, they gave aw

AnnyKZ [126]

Answer:

50 pens

Step-by-step explanation:

x= 25 percent of 200

25/100 times X/200

Cross multiply them and you get

100x=5000

X=5000/100

X=50

25 percent of 200 is 50.

Which means they have away 50 pens

7 0

3 years ago

Read 2 more answers

HELPPPPP!!!!!!! I need to know how to do this step by step, I don’t know how to solve these equation problems. I don’t understan

Amiraneli [1.4K]

Subtract from the 2 and 8

7 0

2 years ago

Read 2 more answers

A store was selling lawn mowers for $69. The repair

Natali5045456 [20]

Answer:

$84.87

Step-by-step explanation:

The mover costs $69

23% of 69 is $15.87

add the two together to get $84.87

(or just multiply 69 by 1.23)

5 0

3 years ago

Read 2 more answers

In the arithmetic sequence, -12, -17, -22, -27... which term has a value of -68?

RSB [31]

Answer:

-68 is not a term in the given sequence

Step-by-step explanation:

The given sequence is -12, -17, -22, -27...

There is a common difference of d=-17--12=-5

The explicit rule for this sequence is $f(n)=-12-5(n-1)$

Or $f(n)=-5n-7$

To find the term that has a value of -68 we equate the explicit formula and solve for n.

$-68=-5n-7$

$\implies -68+7=-5n$

$\implies -61=-5n$

$n=\frac{61}{5} =12.2$

The position should be a natural number.

Since n is a decimal, it tells us that -68 is not a term in the given sequence

7 0

3 years ago