3 years ago

Solve 5x-y=5 and 2y-x^2=11 without using trial improvement

Mathematics

1 answer:

iren2701 [21]3 years ago

8 0

Answer:

x = 7, y = 30 and x = 3, y = 10

Step-by-step explanation:

5x - y = 5, then y = 5x - 5

2y - x^2 = 11

2(5x - 5) - x^2 = 11

10x - 10 - x^2 = 11

-x^2 + 10x -10 = 11

-x^2 + 10x -21 = 0

x^2 - 10x + 21 = 0

(x - 7)(x - 3) = 0

x = 7, y = 30

x = 3, y = 10

You might be interested in

3. Given that a is 30% of b, find the value of a/4b

Karolina [17]

Answer:

a/4b = 0.075

Step-by-step explanation:

a = 30% of b

a = 30/100 × b

a = 0.3b

The value of a/4b is calculated as:

= 0.3b/4b

= 0.075

6 0

2 years ago

Bella works at the grocery store and has 453 oranges to fit into 17 boxes. She fills all of the boxes with exactly the same numb

LUCKY_DIMON [66]

Answer:

It would be 7701

Step-by-step explanation: hope this helps!

6 0

2 years ago

Read 2 more answers

) (60 minutes

Natalija [7]

Answer:

The correct answer is A

Step-by-step explanation:

plz brainlyest (:

7 0

2 years ago

What’s is the answer

Rzqust [24]

Answer:

383.5

Step-by-step explanation:

3835 ÷ 10 = 383.5

Move the 5 to the Tenths

4 0

2 years ago

Read 2 more answers

An inflatable raft that you have jumped in to escape the monsters has 4500 cubic inches of air inside it when fully inflated. It

DedPeter [7]

Answer:

2628.48 cubic inches

Step-by-step explanation:

The inflatable raft has 4500 cubic inches of air inside it when fully inflated.

The inflatable raft loses air at a rate of a decrease 6.5% each day.

Now, we have to calculate the volume of air that will be left in the raft after 8 days.

Therefore, the volume of air left in the raft after 8 days will be $4500[1-\frac{6.5}{100} ]^{8} =2628.48$ cubic inches. (Answer)

8 0

3 years ago