2 years ago

Solve for x and y simultaneously if:x+4=2y and y2-xy+21=0

Mathematics

1 answer:

salantis [7]2 years ago

5 0

Answer:

Step-by-step explanation:

x=−10, y=−3

x=10, y=7

y=7,x=10

y=−3,x=−10

You might be interested in

When the temperature in London is 5 degrees celsius, the temperature in New York is - 7 degrees C. If the temperature in London

SOVA2 [1]

Answer:

the temperature in London would be -1 degrees as 5-6=-1

6 0

2 years ago

What is the interest rate if...<br> Principal = $1,250<br> Time = 4 years<br> Interest = $285.

alexandr402 [8]

Answer:

<h3>The answer is 5.7 %</h3>

Step-by-step explanation:

To find the rate given the principal , time and interest , we use the formula

$r = \frac{100I}{pt} \\$

where

p is the principal

t is the time

I is the interest

From the question

Principal = $1,250

Time = 4 years

Interest = $285

We have

$r = \frac{285 \times 100}{4 \times 1250} = \frac{28500}{5000} = \frac{285}{50} \\ = 5.7$

We have the final answer as

Hope this helps you

8 0

3 years ago

What is the probability of choosing an ace from a deck of cards? Type your answer as a fraction.

Igoryamba

Answer:

Step-by-step explanation:

there are 52 cards in a deck, there are 4 aces. This would create a fraction of 4/52. (using the probaility set up of what I want over the total of everything). I hope this helps!

8 0

2 years ago

Find the value of y when x = 4 in the equation 4x - 2 = y + 5 Show your work help

elena-s [515]

First, substitute 4 into x
Then multiply 4 times 4
Subtract 2
Then subtract 5 from both sides

5 0

2 years ago

Read 2 more answers

Steve is turning half of his backyard into a chicken pen. His backyard is a 24 meter by 45 m rectangle. He wants to put a chicke

Vikentia [17]

Answer: 12 is the awnser

Step-by-step explanation: simple math.

6 0

2 years ago

Solve for x and y simultaneously if:x+4=2y and y2-xy+21=0​

Solve for x and y simultaneously if:x+4=2y and y2-xy+21=0