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
damaskus [11]
3 years ago
8

Please help! 3 questions, 1. Determine if the ordered pair is a solution of the equation. Is (-1,-30) a solution of y =10x?: a)

True b) False
2.The point (5, -1) is a solution of the equation: y = 2x − 11 options: a) True b) False 3.Which ordered pairs are a solution to the equation? y = 8x options: a) (-1,-7) b) (2,16) c) (1,8) d) (-2,-6)
Mathematics
1 answer:
ladessa [460]3 years ago
8 0
This is just a matter of subbing and solving to see if the equations are true

(-1,-30)...x = -1 and y = -30
y = 10x...so we sub
-30 = 10(-1)
-30 = -10 (incorrect)...so this is not a solution
================
(5,-1)...x = 5 and y = -1
y = 2x - 11
sub
-1 = 2(5) - 11
-1 = 10 - 11
-1 = -1 (correct)....so this is a solution
==============
y = 8x
sub in (2,16)...x = 2 and y = 16
16 = 8(2)
16 = 16 (correct)...so (2,16) is a solution

y = 8x
subbing in (1,8)...x = 1 and y = 8
8 = 8(1)
8 = 8 (correct)...so (1,8) is also a solution

thats all...just those 2 are the solutions
You might be interested in
2. What is the sample proportion of heads in your sample of 40? Report this value to your teacher.
Alexeev081 [22]

Answer:

\frac{18}{40}=0.45

Though it may vary, it's going closer to 0.5 as long as we enlarge our sample.

Step-by-step explanation:

1) Since a coin has heads and tails, then a sample proportion of 40 we can simulate it using some applets.

2) Here are the most common outcomes, as long as we continue on flipping coins.

\frac{18}{40}=0.45

If we continue enlarging our sample (80, 120,160...) the probability goes closer to 0.5

This shows: the theoretical probability goes closer and closer to the experimental probability of heads and tails

S_{80}=0.503\\S_{120}=0.50

6 0
3 years ago
In one revolution a circle covers a distance equal to its
DIA [1.3K]

Answer:

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

cc

c

c

6 0
3 years ago
Read 2 more answers
A 1970 comic book has appreciated 7% per year and originally sold for $0.35. What will the comic book be worth in 2017?
omeli [17]
You tell me if this makes sense to you.

It's 47 years from 1970 to 2017 so you would need to multiply 7% by the 47 years.

So: 0.07x47= 3.29 

Now you should add your new price to your original price: $3.29+$0.35= 3.64

So it should cost $3.64 now. Yes that does seem kind of low but that's how you do it.

I hope this helps :)
6 0
4 years ago
Write an equation for each line
Semmy [17]
There is no information here, could you add more. There are no lines for us to help you with so this makes it confusing for others, add more information for us to be able to help.
4 0
4 years ago
What is the answer to with steps (Y+2) at y=-4
nadezda [96]
<span>(Y+2) at y=-4

First: You will plug in your y
Your equation should look like: -4+2
Next: You will take 2 and subtract the 4
You will get: -2 as your answer

HOPE THIS HELPS! ^_^</span>
6 0
3 years ago
Read 2 more answers
Other questions:
  • I need this for today help me help help help please i dont understand​
    14·1 answer
  • According to the narrarator what is trapped behind the yellow wallpaper
    9·2 answers
  • 1. 4(x - 2) = x + 10
    7·1 answer
  • I need help with solving this quadratic equation by factoring. the problem I need help with is number 5.
    9·1 answer
  • The ground temperature at an airport is 13 °C. The temperature decreases by 7 °C for every increase of 1 kilometer above the gro
    5·1 answer
  • Item 7 Complete the statement. Round to the nearest hundredth if necessary. 64 lb ≈ kg
    9·1 answer
  • What is the counterexample for "If two numbers are odd, then theri sum is odd"​
    10·1 answer
  • Find the dimensions of a rectangle with perimeter 76 m whose area is as large as possible. m (smaller value) m (larger value)
    5·1 answer
  • Rationalise the denominator of: (√3 + √2)/(√3-√2) = ?<br>​
    7·1 answer
  • The cost of having photos taken includes a sitting fee and $12 for each portrait. The cost of 3, 6, and 9 photos respectively is
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!