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posledela
3 years ago
14

Need help with my maths please ,having lol problem.

Mathematics
2 answers:
mihalych1998 [28]3 years ago
7 0
For every van there are 6 students 6x,(6 students,x is the number of vans)
Vesna [10]3 years ago
4 0
Below are a few ways to demonstrate some of the patterns in the graph. 

Vans to students:
\frac{1}{6}
1:6
1 to 6

I hope this helps!
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Solve 3(x + 5) = 2x + 35
elena55 [62]
Step 2 and all that follows is wrong because it should equal 20
5 0
3 years ago
Read 2 more answers
According to Gallup’s annual poll on personal finances, while most U.S. workers reported living comfortably now, many expected a
tester [92]

Answer:

- The required percentage to 4 d.p. = 59.5126%

- The required percentage in decimal point to 4 d.p. = 0.5951

Step-by-step explanation:

Proportion that said they have enough money to live comfortably now and expected to do so in the future = 55% = 0.55

Sample size = n = 200

The Central Limit Theorem ensures that we can say that:

1) The sample proportion is equal to the population proportion.

p = μₓ = μ = 0.55

2) Standard Deviation of the sampling distribution = σₓ = √[p(1-p)/n] = √(0.55×0.45/200) = 0.0352

3) We can say that the sample distribution approximates a normal distribution especially when

np > 5 and nq > 5 (which is true for this sample size)

The probability is 90% that less than what sample percentage will say they expect to live comfortably

To find this sample percentage, let that that sample percentage be x' and its z-score be z'

z' = (x' - μ)/σₓ

But we are told that

P(z < z') = 90% = 0.90

Using the normal distribution table

z' = 1.282

1.282 = (x' - 0.55)/0.0352

x' = 0.55 + (0.0352×1.282) = 0.5951264

Hence, the required sample percentage = 59.5126% to 4 d.p.

Hope this Helps!!!

7 0
3 years ago
Solve the system by elimination. <br> -2x+2y+3z=0<br> -2x-y+z=-3<br> 2x+3y+3z=5
KengaRu [80]
-2x + 2y +  3z = 0 → 2x - 2y -   3z = 0 → 2x - 2y - 3z = 0
-2x -   1y +  1z = -3 → 2x + 1y -    1z = 3 → 2x + 1y -  1z = 3
2x +   3y + 3z = 5 →  2x + 3y + 3z = 5            -3y - 2z = -3

-2x + 2y +  3z = 0 → 2x - 2y -   3z = 0
-2x -   1y +  1z = -3 → 2x + 1y -    1z = 3 → 2x + 1y -   1z = 3
2x +   3y + 3z = 5 →  2x + 3y + 3z = 5 → 2x + 3y + 3z = 5
                                                                           -2y - 4z = -2

-3y - 2z = -3 → -6y - 4z = -6
-2y - 4z = -2 → -2y - 4z = -2
                                 -4y = -4
                                  -4     -4
                                     y = 1

  -3y - 2z = -3
-3(1) - 2z = -3
   -3 - 2z = -3
 + 3          + 3
         -2z = 0
          -2    -2
            z = 0

    -2x + 2y + 3z = 0
-2x + 2(1) + 3(0) = 0
       -2x + 2 + 0 = 0
             -2x + 2 = 0
                    - 2  - 2
                    -2x = -2
                     -2     -2
                       x = 1
              (x, y, z) = (1, 1, 0)
8 0
2 years ago
In Exercise, simplify the expression. <br> eln(2x+1)
Galina-37 [17]

Answer:

The simplified expression is 2x + 1  

Step-by-step explanation:

We are given the following in the question:

e^{ln(2x+1)}

We have to simplify this expression.

The logarithmic function is the inverse of the exponential function. Thus, we can write

e^{ln(2x+1)}\\=2x + 1

Thus, the simplified expression is 2x + 1

8 0
2 years ago
A cylinder has a radius of 10m and a 8m. What is the exact volume of the cylinder?
olasank [31]
The formula for the volume of a cylinder is πr^2*h. If you plug in the numbers of the radius and the height. π10^2*8=800π meters^3.
4 0
2 years ago
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