1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Crazy boy [7]
4 years ago
5

HELP ASAP *will mark brainliest* picture attached.

Mathematics
1 answer:
spin [16.1K]4 years ago
4 0
X^2 + y^2 = 5
y = 2x

The second equation is solved for y, so substitute it in the first equation.

x^2 + (2x)^2 = 5

x^2 + 4x^2 = 5

5x^2 = 5

x^2 = 1

x^2 - 1 = 0

(x + 1)(x - 1) = 0

x = -1 or x = 1

Now substitute both values of x in the second equation and solve for y.

y = 2x

For x = -1

y = 2(-1)

y = -2

For x = 1

y = 2(1)

y = 2

Solution: (-1, -2), (1, 2)
You might be interested in
A plant costs £6.80.Julie has £30.00 how many plants can she buy?​
irinina [24]

Answer:

Julie can buy 4 plants

Step-by-step explanation:

A plant costs £6.80 and Julie has £30.

In order to find out how many plants she can buy with £30, we need to see how much times £6.80 can go into £30. In other words, we need to divide £30 by £6.80 so we get the number times it can go into £30. That will be the number of plants.

£30 ÷ £6.80 = 4.41176470588

Julie can't get 0.41176470588 of a plant so we have to round it to 4. She can buy 4 plants.

She has a bit of money left over (you can tell by the decimal number), but that isn't enough to buy another plant. So she buys 4 and has £2.80 left.

£6.80 x 4 = £27.20

4 0
4 years ago
Please explain this to me and say the answer!! ASAP!!!
Ber [7]
Here....see the attachment...
Hope this helps ^^

5 0
3 years ago
what key feature(s) can be easily identified from standard form? Explain how each key feature is related to the rollercoaster. U
raketka [301]

Answer:

Step-by-step explanation:

Key features

when t = 0

the initial height is 143/3  = 47⅔ ft

initial velocity is -310/3 = -103⅓ ft/s (downward)

initial acceleration is 2(64) = 128 ft/s² (upward)

I would not like to ride this roller coaster!

that's about four times the acceleration of gravity, and it only increases as the car gets to the bottom of the curve at t = 1 s

For part 3

I'm not sure what they mean by "not realistic"

while the initial acceleration is high. the acceleration at t = 1 is zero except that in 'reality' the car would have to be going through a curve to change direction from down to up. That would create very high centripetal acceleration and therefore centripetal forces.

5 0
2 years ago
How many 4 minutes and 30 seconds in 2 hours
AleksAgata [21]

4 minutes and 30 seconds go into 2 hours 26 times

119

7 0
4 years ago
Read 2 more answers
What is the missing side length of this right triangle? Type the answer in the box.
horrorfan [7]
The answer is 12 becasue you’re trying to find the leg
3 0
3 years ago
Read 2 more answers
Other questions:
  • There are 140 pages in a book. 25% of them have illustration. How many pages have illustration?
    6·1 answer
  • Please help with 7 and 8 thanks
    6·1 answer
  • Hello can you please help me posted picture of question
    5·1 answer
  • The sequence –5, –2, 1, 4, … , 25 has 11 terms. Evaluate the related series
    6·1 answer
  • I have been stuck on this question for an hour now and I don't understand how to solve it, please please please help! I will mar
    8·1 answer
  • When constructing the centroid of a triangle, you need to find the intersection of all three of which type of line?
    13·1 answer
  • 2x - 4x-7x-2x =10-7+3-1
    6·2 answers
  • Multiple choice help me pls!
    11·1 answer
  • Please give a step by step explanation with the reasons. Basically a proofs column.<br> Thank you.
    10·1 answer
  • Whoever knows the answer tell me please thank you :)
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!