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luda_lava [24]
3 years ago
14

What is the step by step to solved a divide decimal 1.52 divide by 1.9

Mathematics
2 answers:
lora16 [44]3 years ago
8 0

ANSWER

0.8

EXPLANATION

We want to simplify

1.52 \div 1.9

We convert the decimals to fractions

\frac{152}{100}   \div  \frac{19}{10}

We multiply by the reciprocal of the second fraction.

\frac{152}{100}   \times \frac{10}{19}

\frac{19 \times 8}{100}   \times \frac{10}{19}

Cancel the common factors to obtain,

\frac{8}{10}  =  0.8

alexira [117]3 years ago
4 0

Answer:

1.52 ÷ 1.9 = 0.8

Step-by-step explanation:

Given  : decimal 1.52 divide by 1.9

To find : What is the step by step to solved a divide decimal .

Solution: We have given that 1.52 ÷ 1.9

Now removing the decimal \frac{152}{100} ÷ \frac{19}{10}

We used 100 for decimal up to two digit and 10 for decimal up to 1 digit.

Now using the reciprocal rule:

\frac{152}{100} × \frac{10}{19}

Now, cancle out common factors

\frac{8}{10} = 0.8

Therefore, 1.52 ÷ 1.9 = 0.8

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Answer:

4 x 10^{6}

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3.2 x 10^{8} = 320,000,000

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4,000,000 = 4 x 10^{6}

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Factor using a GCF:<br> ​ 16xy2+28xy+8y
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4y( 4xy + 7x +2)

Step-by-step explanation:

16xy^2+28xy+8y

16xy^2 =2*2*2*2*x*y*y

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Ostrovityanka [42]

Answer:

a) The study is an observational study

b) The proportion of children with significant social activity in children with acute lymphoblastic leukemia is approximately 0.802

The proportion of children with significant social activity in children without acute lymphoblastic leukemia is approximately 0.8565

c) The odds ratio is approximately 0.6780

d) The 95% CI is approximately 0.523 < OR < 0.833

e) i) Yes

ii) Children with more social activity have a higher occurrence of acute lymphoblastic leukemia

Step-by-step explanation:

a) An experimental study is a study in which the researcher adds inputs to the study and then monitors the outcomes

An observational study is one in which the researcher observes risk factors and does not intervene in the process

Therefore, the study is an observational study

b) The proportion of children with significant social activity in children with acute lymphoblastic leukemia is \hat p_1 = 1020/1272 = 85/106 = 0.8\overline {0188679245283} ≈ 0.802

The proportion of children with significant social activity in children without acute lymphoblastic leukemia is \hat p_2 = 5343/6238 ≈ 0.8565

c) We have the following two way table;

\begin{array}{ccc}Lymphoblastic \ Leukemia &With \ Social \ Activity & Without \ Social \ Activity\\With&1020 \ (a)&252 \ (b)\\Without&5343 \ (c)&895 \ (d) \end{array}

The \ odds \ ratio = \dfrac{1,020 \times 895}{5,343 \times 252} \approx 0.6780

The odds ratio ≈ 0.6780

d) The 95% confidence interval for the odds ratio is given as follows;

95 \% \ CI = OR \ \pm \ 1.96 \times \sqrt{\dfrac{1}{a} +\dfrac{1}{b}+\dfrac{1}{c}+\dfrac{1}{d}}

Where;

a = 1020, b = 252, c = 5343, d = 895

Therefore;

95 \% \ CI \approx  0.6780 \ \pm \ 1.96 \times \sqrt{\dfrac{1}{1,020} +\dfrac{1}{252}+\dfrac{1}{5,343}+\dfrac{1}{895}} \approx 0.678 \pm0.155

The 95% CI ≈ 0.523 < OR < 0.833

e) i) Given that the observed Odds Ratio is within the Confidence Interval, therefore, there is an indication that the amount of social activity is associated with acute lymphoblastic leukemia

ii) Based on the proportion of the study findings, children with more social activity have a higher occurrence of acute lymphoblastic leukemia

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