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
BaLLatris [955]
2 years ago
8

What is the value of x?? ​

Mathematics
1 answer:
Fudgin [204]2 years ago
3 0

Answer:

x + 5 = 5×

7x - 5 = 2x

5x + 2x + x = 180

<u>8</u><u>×</u><u> </u> = 180

8 8

x = 22.5

You might be interested in
X= 2 and y = 4, then -X-XY
Fed [463]

Answer:

-10

Step-by-step explanation:

= -X - XY

= -2 - 2×4

= -2 - 8

= -10

therefore, -X - XY = -10

5 0
2 years ago
Read 2 more answers
What is -3(3y-7)=21-9y
Nina [5.8K]

Answer:

the equation is equivalent, y is any number

Step-by-step explanation:

-3(3y-7) = 21-9y

-9y + 21 = 21 - 9y

-9y = -9y

y=y

any number will satisfy y=y

6 0
3 years ago
62.80 times 100 equals too
Hunter-Best [27]
The answer would be 6,280.

Hope this helps. c:

4 0
3 years ago
Read 2 more answers
Choco chip cookies cost $3.20 for the 15oz size . The 18oz size $3.75 Which is the better buy
Jlenok [28]

Answer:

18 oz

Step-by-step explanation:

Choco Chip Cookies (15 oz): \frac{\$3.20}{15oz}=\frac{\$0.213}{oz}

Choco Chip Cookies (18 oz): \frac{\$3.75}{18oz}=\frac{\$0.208}{oz}

So, the 18oz package is the better buy by about \$0.005

8 0
2 years ago
Type a proposition involving p, q, r and s that is true just when at least two of the propositional variables are true. For exam
Evgesh-ka [11]

Answer:

(X and Y are real numbers)

p) X > 0

q) Y > 0

r)  XY > 0

s) (X > 0 ∧ Y > 0) ∨ (X = Y = 0)

Step-by-step explanation:

Lets assume that a pair of the propositions are true, and we will show that the other 2 are also true. There are 6 possible cases:

1) If p and q are true, then XY has to be positive because it is the product of positive numbers. And the first option of proposition s is true

2) If p and r are true, then Y = XY/X > 0 because it is the division of tow positive numbers, thus q is true. Since p and q are true, then so it is s.

3) If p and s are true, then option 2 of S is impossible, thus X > 0 and Y>0, hence q is true. SInce p and q are true, so is r.

4) If q and r are true, we can obtain X by dividing the positive numbers XY and Y, thus X>0, and p and s are true.

5) is q and s are true, an argument similar at the one made in 3) shows that both p and r are true.

6) if r and s are true, then the second part of s cant be true, therefore X>0 and Y>0, as a consecuence, p and q are true.

Now, lets show that, individually, no proposition implies the others:

p clearly doesnt imply q. X can be positive while Y is negative. Similarly Y can be positive while X is negative, thus q doesnt imply p either.

If XY > 0, then it can be that both X and Y are negative, thus r might not imply neither p nor q.

and if only s is true, then it may be that the second part is the one that is true, thereofre X=Y=0 and p, q and r are all false in this case.

As a consecuence, you need 2 of the propositions to be true so that all 4 are true, but as we show above, by having any pair of the propositions true, then all 4 are automaticallyy true.

8 0
3 years ago
Other questions:
  • What is 789×243+568?? 10 points!! I can't use a calculator!!! :( help plz
    14·2 answers
  • HELP QUICK 30 POINTS!!
    13·2 answers
  • If 32^x16^-2x=4*2^-5x find x
    11·2 answers
  • If f(x)=x^2+2x+3, find f(1)
    6·2 answers
  • Simplify 12 to the 16th power over 12 to the 4th power.
    12·1 answer
  • The picture shows a box sliding down a ramp.
    15·2 answers
  • What is -6 multiplied by 1/2
    6·2 answers
  • Please help me with this surds question.
    9·1 answer
  • Pleaseeeeeeeeee helppp!!! I will mark brainliest!!
    7·1 answer
  • 8x = 72 Is this nine?? ​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!