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dusya [7]
3 years ago
6

2 to 4 and 12 to 20 are these equivalent

Mathematics
2 answers:
Novosadov [1.4K]3 years ago
5 0
They are not equivalent, you can cross multiply
kodGreya [7K]3 years ago
3 0
No, i would look at these side by side.
A ratio is like a fraction so
2/4 and 12/20
Let's try simplifying 12/20.
Divide each side by 4 and that is 3/5.
This definitely does not equal 2/4
- now let's try this from the 2/4 perspective:
2/4
LCD would be 20. Multiply top and bottom by 5. It would equal 10/20 and not 12/20.
So either way it is not equivalent
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Write the standard form of the equation of a circle with radius 10 and center (9,3)
gladu [14]

Answer:

(x-9)^{2}+(y-3)^{2} =100

Step-by-step explanation:

The standard form formula for a circle equation is  (x-h)^{2}+(y-k)^{2} =r^{2}, where (h,k) represents the center of the circle, and r represents the radius.

r=10

(h,k)= (9,3)

(x-h)^{2}+(y-k)^{2} =r^{2}

(x-9)^{2}+(y-3)^{2} =10^{2}\\(x-9)^{2}+(y-3)^{2} =100

8 0
2 years ago
A randomized controlled study was designed to test whether regular drinking of cranberry juice can prevent the recurrence of uri
Kamila [148]

Answer:

1. The chi-squared statistic = 10.36

The degrees of freedom = 17

The p-value for the test = 0.89

2. The range of the p-value from the Chi squared table = 0.75 < p-value < 0.90

Step-by-step explanation:

1. The Chi squared test is given as follows;

\chi ^{2} = \sum \dfrac{\left (Observed - Expected  \right )^{2}}{Expected  }

Therefore,

                              UTI   No UTI    %     Total

Cranberry juice       8           42      84     50

Lactobacillus          19          30       61     49

Control                    18          30      60    50

The chi-squared statistic is given as follows;

\chi ^{2} = \dfrac{\left (8- 18\right )^{2}}{18} +  \dfrac{\left (42 - 30\right )^{2}}{30} = 10.36

The chi-squared statistic = 10.36

The degrees of freedom, df = 18 - 1 = 17 since the all of the expected count have a minimum value of 18

With the aid of the calculator we find the p value as p as follows;

p = 0.9 - \dfrac{10.36 - 10.085}{12.972 - 10.085} \times (0.9 - 0.75)

The p-value for the test = 0.89  

2. The range of the p-value from the Chi squared table is given as follows;

0.75 < p-value < 0.90.

5 0
3 years ago
$2is what percent of $10
sammy [17]

Answer:

2persent

Step-by-step explanation:

because there are 10 10 in 100

4 0
2 years ago
Read 2 more answers
Pls helpppp pls its due by 9
Vsevolod [243]

Answer:

25% of 140 is 35

Step-by-step explanation:

that's the answer for #3

6 0
2 years ago
How do I transform the equations 5x+4y=8 and -2x+5y=30 so that they are in the form that y=MX+b?
mestny [16]
4y=5x+8 5y=-2x+30 the y always goes first. then the equal sign. next is x and finally just the digit which is also known as "b".
6 0
3 years ago
Read 2 more answers
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