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-BARSIC- [3]
4 years ago
9

1. For what value(s) of x is the equation below true? 3x over 5=2x over 3

Mathematics
2 answers:
loris [4]4 years ago
8 0

Answer:

0

Step-by-step explanation:

\frac{3x}{5} =\frac{2x}{3}

Cross multiple:

9x=10x

Move them to one side

0=1x

Divide

0=x

nlexa [21]4 years ago
7 0

Answer:

Solved problem is in the following photo. Hope it helps.

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If your salary is $42,500 and your federal income taxes are 10% of your salary, how much money will you owe this year in federal
Zarrin [17]
I'm assuming that the salary is for the whole year. If it is not, do tell me. 
Tax = 10/100 * 45000
       = 4500
 You owe $4500 in federal taxes.
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3 years ago
Which of the following sets of ordered pairs is a function?
svetlana [45]

Answer:

it would be D

Step-by-step explanation:

all other choices have a repeating x value.

7 0
3 years ago
Someone help me with this one
Montano1993 [528]

Answer:

p' (4,-2)

Step-by-step explanation:

P is at ( -1,5)

We are moving it 5 units to the right so add 5 to the x

We are moving it 7 units down so subtract 7 from the y

p'( -1+5, 5-7)

p' (4,-2)

5 0
3 years ago
which transformation of the function f(x) is the rigid motion: 2f(x)+3, f(x/2)+1, 2f(x/2), or f(x-1/2)+3
Katarina [22]
Answer is choice D. The other choices involve dilations, or scalings, which basically make the graph taller or flatter depending on what the scale factor is. In the case of f(x-1/2)+3, we shift f(x) to the right 1/2 a unit and up 3. 
4 0
3 years ago
Read 2 more answers
Suppose you are working with a data set that is normally distributed, with a mean of 300 and a standard deviation of 47. Determi
tresset_1 [31]

Answer:

(a)  x = 260.52

(b)  x = 249.24

(c)  x = 265.22

(d)  x = 297.65      

Step-by-step explanation:

Here,  

Mean = \mu = 300

Standard deviation = \sigma = 47

(a)   Using standard normal table,

P(Z > z) = 80%

1 - P(Z < z) = 0.8

P(Z < z) = 1 - 0.8

P(Z < -0.52) = 0.2  

z = -0.84

Using z-score formula,

x = z × σ + μ

x = -0.84 × 47 + 300 = 260.52

(b)  Using standard normal table,

P(Z < z) = 14%

P(Z < -1.08) = 0.1 4

z = -1.08

Using z-score formula,

 x = z × σ + μ

x = -1.08 × 47 + 300 = 249.24

(c) Using standard normal table,

P(Z < z) = 23%

P(Z < -0.74) = 0.243

z = -0.714

Using z-score formula,

 x = z × σ + μ

x = -0.74 × 47 + 300 = 265.22

(d)  Using standard normal table,

P(Z > z) = 52%

1 - P(Z < z) = 0.52

P(Z < z) = 1 - 0.52

P(Z < -0.25) = 0.4 8

z = -0.05

Using z-score formula,

x = z × σ + μ

x = -0.05 × 47 + 300 = 297.65

8 0
4 years ago
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