All categories

3 years ago

Which ordered pair is the solution to the system of equations?

1 answer:

5 0

X + y = 4
x - y = -6
--------------add
2x = -2
x = -2/2
x = -1

x + y = 4
-1 + y = 4
y = 4 + 1
y = 5

solution is : (-1,5)

You might be interested in

40/27 ,20/9, 10/3 what is the next term in the geometric sequence ?

murzikaleks [220]

Answer:

5/1

Step-by-step explanation:

40/27

20/9

10/3

5/1

divided by 2 and 3 each other!

8 0

4 years ago

In a factory, a manager tests 250 products and finds defects in 7 of them. How many defects are likely going to be in a 10,000 u

Natalka [10]

Answer:

280

Step-by-step explanation:

first make a proportion. 7 over 250= x over 10,000. cross multiply to get 250x=70,000. 70,000 divided by 250 which gets you 280.

7 0

4 years ago

Y = inversely proportional to x. When x = 3, y = 8. Work out the value of y when x = 8.

liberstina [14]

y = k/x

8 = k/3

k = 24

sub back in

y = 24/x

y = 24/8

3 0

3 years ago

The length of a rectangle is five times its width.

Marizza181 [45]

ANSWER

96 yd

EXPLANATION

Let the width of the rectangle be w, then, the length of the rectangle will be:

$l = 5w$

The area of a rectangle is calculated using the formula:

$Area=l \times w$

$Area=5w \times w$

$Area=5 {w}^{2}$

It was given that, the area of the rectangle is 320yd²

$320=5 {w}^{2}$

Divide both sides by 5.

$64 = {w}^{2}$

Take square root of both sides to get:

$w = 8yd$

This means the length is

$l = 5 \times 8 = 40yd$

The perimeter of a rectangle is given by:

P=2(w+l)

We plug in the values to get:

$P=2(40 + 8) = 2 \times 48 = 96yd$

The perimeter is 96yd

5 0

3 years ago

Suppose you deposit $6000 in an account with an annual interest rate of 4%. If the

Sedaia [141]

Answer:

5760

Step-by-step explanation:

7 0

3 years ago