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4 years ago

Solve for x. -3x+x=2(x-3)

Mathematics

2 answers:

Luda [366]4 years ago

7 0

Your answer is x= 3/2

Nat2105 [25]4 years ago

5 0

Answer:

$x=-\frac{3}{2}$

Step-by-step explanation:

$-3x+x=2(x-3)\\ \Leftrightarrow -2x=2x-6\\ \Leftrightarrow 4x=-6\\ \Leftrightarrow x=-\frac{3}{2}$

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The fee for a banquet hall is $525 for a group of 25 people and $1475 for a group of 75 people. Included in the fee is a standar

Roman55 [17]

The Answer is 20 I believe

5 0

3 years ago

Read 2 more answers

g 7. Find Re f and Im f and find their values at the given z. (Both answers should be included) f = z⁄(z + 1), z = 4 − 5

Schach [20]

Answer:

The real and imaginary parts of the result are $\frac{1441}{1601}$ and $\frac{4}{1601}$ , respectively.

Step-by-step explanation:

Let be $f(z) = \frac{z}{z+1}$ , the following expression is expanded by algebraic means:

$f(z) = \frac{z\cdot (z-1)}{(z+1)\cdot (z-1)}$

$f(z) = \frac{z^{2}-z}{z^{2}-1}$

$f(z) = \frac{z^{2}}{z^{2}-1}-\frac{z}{z^{2}-1}$

If $z = 4 - i5$ , then:

$z^{2} = (4-i5)\cdot (4-i5)$

$z^{2} = 16-i20-i20-(-1)\cdot (25)$

$z^{2} = 41 - i40$

Then, the variable is substituted in the equation and simplified:

$f(z) = \frac{41-i40}{41-i39} -\frac{4-i5}{41-i39}$

$f(z) = \frac{37-i35}{41-i39}$

$f(z) = \frac{(37-i35)\cdot (41+i39)}{(41-i39)\cdot (41+i39)}$

$f(z) = \frac{1517-i1435+i1443+1365}{3202}$

$f(z) = \frac{2882+i8}{3202}$

$f(z) = \frac{1441}{1601} + i\frac{4}{1601}$

The real and imaginary parts of the result are $\frac{1441}{1601}$ and $\frac{4}{1601}$ , respectively.

8 0

3 years ago

PLEASE HELP ME

arlik [135]

Answer choice D. In order to find the r value, you need to find the degrees of freedom (df). df = n -2. In this case then the degrees of freedom is 9 (11 - 2). Now you use the df, the significance value (also known as p-value), and the critical value table (search it up if you don’t have one) to find that with a df of 9 and a probability value of 0.01, the r = 0.735.

The reason for why the answer is not “A” is due to the fact that we’re finding all of the possible r values, we are not a evaluating r to see whether or not it is significant.

4 0

2 years ago

John and Erica each have a marble collection. • The number of marbles in John's collection can be represented by x. • The number

tangare [24]

Answer: John has 52 marbles in his collection

Step-by-step explanation:

Step 1

LET The number of marbles in John's collection can be represented by x. The and the number of marbles in Erica collection can be represented as =4x+ 10

The total number of marbles in both collections is 270 such that the expression to solve the equation will be

JOHN + ERICA = 270marbles

X + 4X+ 10= 270

Step 2--- solving

X + 4X+ 10= 270

5X+ 10= 270

5X= 270-10

5X= 260

X= 260/5

=52

John has 52 marbles in his collection

Erica has 4x + 10 = 4x 52 + 10=218 marbles

4 0

3 years ago

Crystal is organizing the seating arrangements for a concert in her local park. The first row's seats are modeled by the functio

inna [77]

F ( x ) - the number of seats in the 1st row;
s ( x ) - the number of additional seats in the next row;
An equation that predicts the number of seats in any row:
g ( x ) = f ( x ) + s ( x )
g ( x ) = 12 + 3 ( x - 1 )
The number of seats in the 30th row:
g ( 30 ) = 12 + 3 * ( 30 - 1 ) = 12+ 3 * 29 = 12 + 87 = 99 seats

3 0

3 years ago