Please help I will give brainiest answer

Answer:

2

Step-by-step explanation:

Answer:

Solve equation [2] for the variable y

[2] y = -2x + 1

// Plug this in for variable y in equation [1]

[1] (-2x+1) + 4x = -3

[1] 2x = -4

// Solve equation [1] for the variable x

[1] 2x = - 4

[1] x = - 2

// By now we know this much :

y = -2x+1

x = -2

// Use the x value to solve for y

y = -2(-2)+1 = 5

Solution :

{y,x} = {5,-2}

I'll use text forms of the logical symbols because copying/pasting on mobile is annoying.

⊕ = XOR

∨ = OR

∧ = AND

~ = NOT

↔ = IFF (meaning "if and only if")

→ = IMP (short for "implies")

and for logical equivalence I'll use a regular equal sign.

Then

p XOR q = (p OR q) AND NOT (p AND q)

(a) By definition of XOR, we have

p XOR p = (p OR p) AND NOT (p AND p)

= p AND NOT p

and this is tautologically FALSE.

(b) To rewrite XOR, first distribute the NOT over the AND using DeMorgan's law:

NOT (p AND q) = NOT p OR NOT q

Then we can interchange the AND and ORs using their respective distributive properties. That is,

p XOR q = (p OR q) AND (NOT p OR NOT q)

= (p AND (NOT p OR NOT q)) OR (q AND (NOT p OR NOT q))

= ((p AND NOT p) OR (p AND NOT q)) OR ((q AND NOT p) OR (q AND NOT q))

Both (p AND NOT p) and (q AND NOT q) are tautologically FALSE, so the truth value of either OR depends only on the other statements, so we have

p XOR q = (p AND NOT q) OR (q AND NOT p)

Recall the definition of IFF:

p IFF q = (p IMP q) AND (q IMP p)

Also recall that IMP is logically equivalent to

p IMP q = p OR NOT q

Then we have

p IFF q = (p OR NOT q) AND (q OR NOT p)

so that its negation is

NOT (p IFF q) = NOT ((p OR NOT q) AND (q OR NOT p))

= NOT (p OR NOT q) OR NOT (q OR NOT p)

= (NOT p AND q) OR (NOT q AND p)

The statements in bold match, so p XOR q is indeed equivalent to NOT (p IFF q).

Answer:

x = 57°

Step-by-step explanation:

x + 123 = 180

=> x = 57°

Hoped this helped.

Answer:

he traveled 9Km

Step-by-step explanation:1.5 x 6

Answer:

is this free choice?

Step-by-step explanation:

Answer:

Yes

Step-by-step explanation:

Since A=pi x r2 There is a proportional relationship .

Answer:

Ф = 19.80 °

Step-by-step explanation:

by using pythagoras theorem

h² = p² + b²

13² = 5² + b ²

b = √194

b = 13.93

now

tanФ  = p/b

Ф = tan¬1( 5 / 13.93)

Ф = 19.80 °

Answer:

x-5 = 20

x = 25

Step-by-step explanation:

If it's five less than a number and it equals 20, you would add 20 to 5 and get 25, but to make it as an equation, you would do x - 5 = 20.

Answer:

About 4 months give or take

Step-by-step explanation:

Answer:

C. 4 months

Step-by-step explanation:

In order to find what is the equivalent number of months in 120 days, we can apply the following methods:  

Since there are 30 days in one month, then we can establish the following proportion statement in colon form:

30 days: 1 month = 120 days : x months

The expression of proportion in colon form, (a : b = c : d):

We could also establish the proportion statement in fraction form (ratio):

     [tex]\large \mathsf {\frac{30\:days}{1\:month}\:=\:\frac{120\:days}{x\:months}}[/tex]

Then, use the Cross-product property, which involves the multiplication of extremes and the means:

30 days ×  x months = 1 month × 120 days

30x = 120

Then, divide both sides by 30 to solve for the value of x:

[tex]\large\sf{\frac{30x}{30}\:=\:\frac{120}{30}}[/tex]

x = 4

Therefore, there are 4 months in 120 days, making Option C as the correct answer.

Answer:

i think ur on the right path

Step-by-step explanation:

if it is looking for the percent it would be 23%

Answer:

Step-by-step explanation:

    15d = -105

15d/15 = -105/15

        d = -7

15d = -105

d = -105/15

d = -7

____

RainbowSalt2222 ☔

Answer:

95.80

Step-by-step explanation:

hope I helped BESTIEE

Answer:

Step-by-step explanation:

23/24 as a decimal is 0.95833333333333.

Answer:

9:17

Step-by-step explanation:

18 + 16 = total # of students = 34

18:34

9:17

Hope this helps!

Answer:

  A) w^2 +17w -308 = 0

  B) (w -11)(w +28) = 0

  C) length: 28 ft; width: 11 ft.

Step-by-step explanation:

If w is used to represent the width of the garden, then its length is w+17, and the relation to area is ...

  w(w +17) = 308

  w^2 +17w -308 = 0 . . . . the desired quadratic equation

__

The equation can be factored as ...

  (w -11)(w +28) = 0 . . . . . the factored equation

__

The positive solution for w in the factored equation is w = 11. Then the length of the garden is ...

  w +17 = 11 +17 = 28

The length and width of the garden are 28 feet and 11 feet, respectively.

Answer:

- Alejandra esperó el autobús el martes pasado.

- El martes pasado Alejandra esperó el autobús

Step-by-step explanation:

Answer: - Alejandra esperó el autobús el martes pasado.

Step-by-step explanation:

Answer:

=2x^2+6x-8

Step-by-step explanation:

Answer:

empty set

Step-by-step explanation:

Answer: { } or empty set

the choses are:

{ } or empty set

{ infinite set of points on like}

{ point in quadrant I }

Answer:

468.75Dollars

Step-by-step explanation:

If you add 93 dollars

ATQ

[tex]\\ \sf\longmapsto R+B+G=10[/tex]

[tex]\\ \sf\longmapsto 6+2+2=10[/tex]

[tex]\\ \sf\longmapsto 4+1+1=5[/tex]

Now

Two of same colour so we need P(R')

[tex]\\ \sf\longmapsto P(R')=\dfrac{|R|}{|S|}[/tex]

[tex]\\ \sf\longmapsto \dfrac{4}{10}[/tex]

[tex]\\ \sf\longmapsto 0.4[/tex]

Answer:

[tex] < 1 = 112 \degree\\ < 2 = 68 \degree \: \\ < 3 = 112 \degree[/tex]

Step-by-step explanation:

As the vertically opposite angles are equal,

[tex]x = < 2 \\ x = 68 \\ so \\ < 2 = 68 \degree[/tex]

As the angles in a straight line is added up to 180°

[tex] < 1 + < 2 = 180 \\ < 1 + 68 = 180 \\ < 1 = 112 \degree[/tex]

Also,

[tex] < 2 + < 3 = 180 \\ 68 + < 3 = 180 \\ < 3 = 112 \degree[/tex]

Hope this helps you.

Let me know if you have any other questions:-)

9514 1404 393

Answer:

   The decimal point moves 4 places to the right

Step-by-step explanation:

Take a simple case using the whole number 3.

  3.    —   whole number we're starting with

  3.×10^4 = 3.×10,000 = 30,000.   —   multiplied by 10^4

The decimal point moves 4 places to the right.

_____

Additional comment

Multiplying be a positive power of 10 moves the decimal point a number of places equal to that power. Effectively, the number of zeros added on the right is equal to the power of 10. Above, you will notice multiplying by 10^4 added 4 zeros to the right of the number.

Answer:

3472

Step-by-step explanation:

Slope:-

[tex]\\ \sf\longmapsto m=\dfrac{5-1}{-2+6}=\dfrac{4}{4}=1[/tex]

Point-Slope form

[tex]\\ \sf\longmapsto y-y_1=m(x-x_1)[/tex]

[tex]\\ \sf\longmapsto y-1=1(x+6)[/tex]

[tex]\\ \sf\longmapsto y-1=x+6[/tex]

[tex]\\ \sf\longmapsto x-y+7=0[/tex]

Answer:

a) 16-x=x+4

add x to both sides

16=2x+4

subtract 4 from both sides

12=2x

divide both sides by 2

x=6

b) (8-x)-5=2

add 5 to both sides

8-x=7

add x to both sides

8=7+x

subtract 7 from both sides

x=1

c) 4+x=x+4

subtract 4 from both sides

x=x

x belongs to all real numbers.

Answer:

A) 16-x=x+4

       +x +x

-----------------

16=2x+4

-4       -4

--------------

12=2x

---- ---

2     2

x=6

D)6 (x=6)

B) (8-x)-5=2

8-x-5=2

Combine like terms (8-5)

3-x=2

-3   -3

-----------

-1x=-1

--    --

-1     -1

B=1

x-1 so your answer is 1

C) 4+x=4+x

From telling there is going to be no solution but still solve it

4+x=4+x

-4    -4

---------------

0+x=x

  -x   -x

--------------

0=0x

--   ---

0    0

B is your answer (X=0)

Hope this helped :D

Answer:

[tex]i)a + 2b = 2 + 2(3) = 2 + 6 = 8 \\ ii)a + b + c = 2 + 3 + 3 = 2 + 6 = 8[/tex]

Answer:

a = 2, b = 3 and c = 3

a + 2b

2 + 2(3) = 2 + 6 = 8

a + b + c

2 + 3 + 3 = 8

Thus, The answer of i.) is 8 and ii.) is 8

-TheUnknownScientist 72

Answer:

60%    

Step-by-step explanation:

number well done/total burgers cooked ×100

45/75 × 100

4500/7500

60%    

Check: Total  ×  60%  = 75 ×.60 = 45 well done