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Tanzania [10]
3 years ago
15

Can someone please explain the steps to solve these questions.

Mathematics
1 answer:
Amiraneli [1.4K]3 years ago
3 0
Alright! So to solve these questions, you need to find out the difference. You can use ratios to solve this. For example, question #25:

A class had 30 pupils at the beginning of this school term, but now has 5 more pupils. What is the percent of increase?

The question is basically asking how much 5 is in ratio to 30. So just divide 5 (the given amount) by 30 (the total amount). The answer is 0.16, or 16%
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When the fraction below is written as a decimal, how many digits are in the smallest
tiny-mole [99]

Answer: I THINK it's A

6 0
3 years ago
Lily paid her parents $250 for rent and divided the rest of her paycheck evenly into a checking account, a savings account, and
Assoli18 [71]
What kind of equation

6 0
3 years ago
Temperature transducers of a certain type are shipped in batches of 50. A sample of 60 batches was selected, and the number of t
Contact [7]

Answer:

The number of six non conforming transducers at most =54/60=0.9

The number of fewer than six non conforming transducers =51/60=0.85

The number of at least six non conforming transducers at most =30/60=0.5

d) The center of the histogram is around 2 or 3 and it shows that there is some positive skewness in the data

Step-by-step explanation:

Relative Frequency Frequency       x

6/60=0.1                            6                   0

0.2                                    12                    1

0.2                                   12                     2

0.25                            15                      3

0.1                                    6                       4

0.05                               3                 5

0.05                               3                 6

0.0167                              1                          7

<u>0.033                               2                  8</u>

<u>∑                                    60                   </u>

The number of six non conforming transducers at most

= 6+12+12+15+6+3= 54

The number of six non conforming transducers at most =54/60=0.9

The number of fewer than five non conforming transducers

= 6+12+12+15+6 = 51

The number of fewer than six non conforming transducers =51/60=0.85

 

The number of at least six non conforming transducers

2+1+3+3+6+15= 30

The number of at least six non conforming transducers at most =30/60=0.5

We plot the histogram by placing the percentages (or relative frequency *100) on the y –axis and the X on the x-axis.

The center of the histogram is given by the mean of the distribution which in this case is = ∑fx/∑f= 161/60= 2.683

So option d is the best answer

d) The center of the histogram is around 2 or 3 and it shows that there is some positive skewness in the data

Because at the center (between 2 and 3) the curve is increasing

6 0
3 years ago
If (4x−7)2=ax2+bx+c for all values of x, what is the value of c(b+a)?
ollegr [7]

Answer:

  -1960

Step-by-step explanation:

The expression on the left expands to ...

  (4x -7)² = (4x)² +2(4x)(-7) +(-7)² = 16x² -56x +49

Matching coefficients, you have ...

  • a = 16
  • b = -56
  • c = 49

Then the expression c(b+a) evaluates to ...

  49(-56+16) = 49(-40) = -1960

8 0
3 years ago
Find the exact value of tan 195 degrees
melamori03 [73]

Answer:

tan(195\°)=tan(15\°)=0.267949192431123...

Step-by-step explanation:

We know that

tan(195\°)=tan(15\°), because 195\° - 180\° = 15\°.

Now, angle 15° or 195° is not an important angle which can be solve by a given table like 30°, 45° or 60°. This means we have to use the calculator to find the more exact value, which is

tan(195\°)=tan(15\°)=0.267949192431123...

6 0
3 years ago
Read 2 more answers
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