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
viva [34]
3 years ago
8

A. Use substitution and show work

Mathematics
1 answer:
Alja [10]3 years ago
6 0
A) 2x -3(3x -7) = 7 . . . . substitute for y
.. -7x = -14 . . . . . . . . . . . subtract 21
.. x = 2 . . . . . . . . . . . . . divide by -7
.. y = 3*2 -7 = -1 . . . . . . substitute for x
(x, y) = (2, -1)


B) 5(5x -2y) -2(3x -5y) = 5(8) -2(1) . . . . subtract 2 times 2nd equation from 5 times 1st
.. 19x = 38 . . . . simplify
.. x = 2 . . . . . . . divide by 19
.. y = (5x -8)/2 = 1 . . . . solve 1st equation for y, substitute x
(x, y) = (2, 1)


C) See the first graph.
(x, y) = (-4, 1)


D) See the second graph.
(x, y) = (3, 2)

You might be interested in
Radius = 11 cm.; Height = 10 cm.
Fittoniya [83]

Answer:

3801.32 {cm}^{3}

Step-by-step explanation:

V=π {r}^{2} h \\ =π· {11}^{2} ·10 \\ ≈3801.3271

5 0
3 years ago
A boat traveling at a constant rate. In 4 seconds, the boat travels 80 feet what is the rate the boat is traveling at in feel pe
Varvara68 [4.7K]

Answer: 20 feet per second

Step-by-step explanation:

Do 80 divided by 4

6 0
3 years ago
HELPPPPPPPPPP- pleaseeee T^T
Luba_88 [7]

Answer:

Step-by-step explanation:

A

8 0
3 years ago
Read 2 more answers
Will give brainliest to first answer
fiasKO [112]

Answer:

the answer is 1500

Step-by-step explanation:

please give brainlyest

5 0
3 years ago
Sulfur is an exception to the octet rule and can possess less than eight electrons in a covalent compound. TRUE FALSE
defon
Sulfur is an exception to the octet rule because it can have an expanded valence shell that holds more than 8 electrons. Common examples are sulfur tetrafluoride which has 10 valence electrons and sulfur hexafluoride which has 12 valence electrons.

However, there are no sulfur compounds with less than 8 valence electrons. So, the answer is false.
4 0
3 years ago
Other questions:
  • What is the common factor of 34m and 16m^2
    6·1 answer
  • Michael had 4/5 of a spool of yarn. He used 3/5 of it for his project. What fraction of the spool was used for his project?
    7·1 answer
  • How many different four-letter strings can be formed from the letters A, B, C, D, E (repeats allowed) if the first letter must b
    7·2 answers
  • HELP 
    14·2 answers
  • Use PEMDAS to simplify the expression.<br> 7 715-221<br> 2<br> + 10 - (5 x 23)
    15·1 answer
  • The length and width of a rectangular patio are, (x + 8) feet and (x + 6) feet,
    14·2 answers
  • Zoologists are studying two newly discovered species of insects in a previously unexplored section of rain forest. They estimate
    5·1 answer
  • If the day tomorrow is sunday, what was it yesterday?
    11·2 answers
  • Plz help I have a time test
    7·1 answer
  • -3-y=24 how much is the variable
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!