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
Butoxors [25]
3 years ago
13

-7x + 2y = 18 6x+6y=0

Mathematics
1 answer:
tia_tia [17]3 years ago
4 0

Answer:

{25/2,-25/2}

Step-by-step explanation:

You might be interested in
There were 9 roses in the vase. Nancy cut some more roses from her flower
Aleonysh [2.5K]

Answer:

7 roses

Step-by-step explanation:

16-9=7

5 0
3 years ago
Read 2 more answers
How many times does 8go into14
eimsori [14]

Answer: 1

Step-by-step explanation: it only goes into 14 once because 8 • 2 =16

4 0
3 years ago
Read 2 more answers
What is the name of a survey that includes all members of a population being studied
Alexxandr [17]
That would be a census!
5 0
3 years ago
A detective has interviewed four witnesses to a crime. From the stories of the witnesses the detective has concluded
SVETLANKA909090 [29]

Answer:

Step-by-step explanation:

Step 1:we should turn the “facts” into logical expressions.

Step 2:Assign variables

Our variables are: b (for butler), c (for cook), g (for gardener), h (for handyman)

Step 3 . Let the value of true indicate that the person is telling the truth. For example, b = T means the butler is telling the truth. Then we can translate the statements as follows:

Check attachment

Step 4

We know all of these must hold. So we really want to know when (b→c)∧¬(c∧g)∧¬(¬g∧¬h)∧(h → ¬c) is true.

Step 5

Behold, another truth table task! If you work out the truth table, you see that this statement is only true when:

Check attachment

Step 6

Therefore we can say the butler and cook are definitely lying, but we can not determine if the gardener or handyman are lying. However, there are four variables in this problem. Instead, we can do this with some straight reasoning. Notice that:

If the butler is telling the truth, then by (a) the cook is telling the truth.

If the cook is telling the truth, then by (b) the gardener is lying.

If the gardener is lying, then by (c) the handyman is telling the truth.

If the handyman is telling the truth, they by (d) the cook is lying.

This leads to a contradiction (the cook can not be both telling the truth and lying)! Therefore the butler and cook must be lying. What about the gardener and the handyman? We don’t have enough information to figure out if they are lying. Since the cook is lying, we can’t use (b) to come to any conclusions about the gardener. Even if we are able to conclude that the gardener is telling the truth, we can’t use (c) to come to any conclusions about the handyman.

4 0
3 years ago
How mcuh does a toothpick weigh in grams?
olya-2409 [2.1K]
I believe 100mg.  I'm not so sure though but, you can always check google you know..
6 0
3 years ago
Other questions:
  • The area of Canada is approximately
    12·1 answer
  • Find the distance between the points (0, –1) and (3, –3).
    14·2 answers
  • Suppose a 15-minute call costs $5.26, and a 30-minute call costs $10.24. Find a formula relating time (in minutes) and cost (in
    11·1 answer
  • Which of the following best describes the English expression the quotient of nine and the sum of a number and one
    5·1 answer
  • 100 POINTS!! Express in simplest radical form
    5·2 answers
  • For f(x) = -5x + 10, what is the value of x for which f(x) = 35?
    8·1 answer
  • Is the set of ordered pairs above a function? {(3,4), (1,5), (-9,0), (3,-2)}
    10·1 answer
  • A local department store sells carpet in 4 sizes . Each carpet comes in 3 different qualities. One of the size come in 5 colors
    14·1 answer
  • Can omeone help i cant solve this
    9·1 answer
  • Distribute 2 (9x^2 + 3).
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!