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
solong [7]
4 years ago
11

Heeeeeeeeeeeeelpppppppppppppppp!

Mathematics
1 answer:
Alexus [3.1K]4 years ago
5 0
To figure out which of the coordinates don't work, we need to substitute their values of x and y to figure out if they work or not. We will know they don't work if the result we get is something crazy like 2=25. 

Substitute the values of x and y from a
\left \{ {{5 (6) = 3(5) +15 } \atop {6(5)=10(6)-30}} \right.

Now we simplify
\left \{ {{30 = 30 } \atop {30=30} \right. 
Since this is true we know that the point (5,6) works. Now let's move onto B. 

Once again, we substitute. 
\left \{ {{5 (12) = 3(-15) +15 } \atop {6(-15)=10(12)-30}} \right.

This simplifies to 
\left \{ {{60=-30} \atop {-90=90} \right.
Since this is obviously not right, we know that is the point that doesn't work in this system of equations. 
You might be interested in
Help with # 4 plz idk
EleoNora [17]
It would be G. about 15 miles
6 0
3 years ago
Type the correct answer in the box use/ for the fraction bar
Zarrin [17]

Answer:

see explanation

Step-by-step explanation:

given the 2 equations

y = x² - 2x - 19 → (1)

y + 4x = 5 → (2)

substitute y = x² - 2x - 19 into (2)

x² - 2x - 19 + 4x = 5 ( subtract 5 from both sides )

x² + 2x - 24 = 0 ← in standard form

(x + 6)(x - 4) = 0 ← in factored form

equate each factor to zero and solve for x

x + 6 = 0 ⇒ x = - 6

x - 4 = 0 ⇒ x = 4

substitute each value of x into (1) for corresponding y- coordinate

x = - 6 : y = (- 6)² - 2(- 6) - 19 = 36 + 12 - 19 = 29 ⇒ (- 6, 29)

x = 4 : y = 4² - 2(4) - 19 = 16 - 8 - 19 = - 11 ⇒ (4, - 11)

the solutions are (- 6, 29), (4, - 11)


6 0
3 years ago
Find sin(a) <br> (Picture)
svet-max [94.6K]

Answer:

Sine of A should be 5/13

Step-by-step explanation:

Hope this Helped

3 0
3 years ago
What is the center of the circle
Vesna [10]
Put the equation given in the form (x + f) + (y + h) =  r ^{2}
The center will be (-f, -g)
8 0
3 years ago
A number decreased by 4 equals -12. What is the number? _____
elena55 [62]

x - 4 = -12

I think x = -8 as if you decrease -8 by 4 it will leave us with the answer of -12

x = -8

Hope this helped,

Jon

4 0
3 years ago
Other questions:
  • What's the answer to question 10? I don't understand.
    10·1 answer
  • A sea cow can stay under water for y minutes. This is 11 minutes longer than one-third the time a hippopotamus can. Write an equ
    13·1 answer
  • Mia jogs 3 km in 20 minutes there are about 0.6 miles in a kilometer what is Mia’s approximate speed in miles per minute
    6·1 answer
  • ​(26÷13)⋅(−7)+14−4​ ?
    13·2 answers
  • A 2956 kg car starts from rest at the top of a driveway of length 6 m that is sloped at 35◦ with the horizontal. An average fric
    13·1 answer
  • Please help asap I need it
    13·1 answer
  • Convert 537 to a number in base THREE​
    6·1 answer
  • 2 times 2 times 13 what is the missing number?
    6·1 answer
  • How many cubes with sides that measure 1/5 foot are required to fill a rectangular container that has a length of 2 feet, a widt
    7·1 answer
  • It was 7 °F outside. The temperature dropped 16º.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!