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BARSIC [14]
3 years ago
13

IF YOU ANSWER ALL OF THESE I WILL MARK YOU BRAINLIEST

Mathematics
1 answer:
hjlf3 years ago
5 0
1).  $2,700 is  (2,700/6,000) = 45% of  6,000.

      It took 6 years to earn it, so it earned (45%/6) = 7.5% each year.
      That's the simple-interest rate.
_________________________________

2).  The investment earns 4.5% each year, so it earned 9% in 2 years.

      The $1,150.65 is the 9% of the original investment.  Call it V.

      1150.65 = 0.09 x V .

Divide each side by 0.09 :

         V  =  1150.65 / 0.09  =  $12,785 .
____________________________________

3).  There are 18 marbles in the bag all together.

a).  8 of them are green.  If you close your eyes and pull out 1 marble,
the probability that it's a green one is
                                                               8/18 = 4/9  =  44.4% .

b).  If it was a red marble, and you put it in your pocket, then
there are only 17 in the bag now, and 8 of them are still green.

If you pull another one, the probability that it's green is

                                                               8/17  =  47.1% .
____________________________________

5).  There are 10 marbles in the bag all together.
(The second sentence doesn't say anything, and doesn't mean anything.)

If you pull out a silver marble and put it in your pocket, then
there are 9 marbles in the bag, and 2 of them are orange.

The probability of pulling an orange marble now is

                                  2/9  =  22.2% .
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In an injection-molding operation, the length and width, denoted as X and Y, respectively, of each molded part are evaluated. Le
nika2105 [10]

Answer:

attached below

Step-by-step explanation:

Attached below are the Venn diagrams

A :  48 < X < 52   cm

B : 9 < Y <  11 cm

a) A

b) A ∩ B

c) A' ∪ B

d) A ∪ B

e)  for events to be mutually exclusive it means that both events can not occur simultaneously i.e. A ∩ B = 0

the process would not be successful hence the process would not produce parts with X = 50 cm and Y = 10 cm

6 0
2 years ago
????? help out ( not good with math )
Y_Kistochka [10]

Answer:

The answer is x = 3

Step-by-step explanation:

5x + 9 = 24

5x +9 -9 = 24 - 9

5x = 15

x = 15/5 = 3

Therefore, x = 3

Kelly multiplied 5 to each side when she solved for x, which is incorrect.

3 0
3 years ago
Read 2 more answers
Explain why the graphs of reciprocals of linear functions (except horizontal ones) always have vertical asymptotes,
Naily [24]

Answer:

The reason is because linear functions always have real solutions while some quadratic functions have only imaginary solutions

Step-by-step explanation:

An asymptote of a curve (function) is the line to which the curve is converging or to which the curve to line distance decreases progressively towards zero as the x and y coordinates of points on the line approaches infinity such that the line and its asymptote do not meet.

The reciprocals of linear function f(x) are the number 1 divided by function that is 1/f(x) such that there always exist a value of x for which the function f(x) which is the denominator of the reciprocal equals zero (f(x) = 0) and the value of the reciprocal of the function at that point (y' = 1/(f(x)=0) = 1/0 = ∞) is infinity.

Therefore, because a linear function always has a real solution there always exist a value of x for which the reciprocal of a linear function  approaches infinity that is have a vertical asymptote.

However a quadratic function does not always have a real solution as from the general formula of solving quadratic equations, which are put in the form, a·x² + b·x + c = 0 is  \dfrac{-b \pm \sqrt{b^{2} - 4\cdot a\cdot c}}{2\cdot a}, and when 4·a·c > b² we have;

b² - 4·a·c < 0 = -ve value hence;

√(-ve value) = Imaginary number

Hence the reciprocal of the quadratic function f(x) = a·x² + b·x + c = 0, where 4·a·c > b² does not have a real solution when the function is equal to zero hence the reciprocal of the quadratic function which is 1/(a·x² + b·x + c = 0) has imaginary values, and therefore does not have vertical asymptotes.

6 0
3 years ago
GIVING BRAINLIST!!!!! Given that the area of rectangle IJKL is 490 units^2, what are its length and width?
seropon [69]

Answer:

See below ~

Step-by-step explanation:

<u>Given</u>

  1. Area = 490 units²
  2. Width = 5x
  3. Length = 8x

Now, we know that : length x width = area

<u>Using the given values</u>

  • (8x)(5x) = 490
  • 40x² = 490
  • x² = 490/40
  • x² = 49/4
  • x = √49/4
  • x = 7/2 = 3.5

<u>Length (l)</u> = 8x = 8(3.5) = <u>28 units</u>

<u>Width (w)</u> = 5x = 5(3.5) = <u>17.5 units</u>

4 0
2 years ago
Read 2 more answers
How many times greater is 10^2 than 10^1
Juli2301 [7.4K]

Answer:

it is greater by ten times.

5 0
3 years ago
Read 2 more answers
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