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kaheart [24]
3 years ago
12

Find the digit that makes 3,80_divisible by 8.

Mathematics
2 answers:
CaHeK987 [17]3 years ago
5 0
The answer would be B. 0. If you put 3,800 into a calculator and divide by 8 the answer should be 475
valkas [14]3 years ago
4 0

Answer:

B,0

Step-by-step explanation:

3,802 divided by 8= 475.25

3,804 divided by 8= 475.5

3,806 divided by 8= 475.75

And 3800 divided by 0=475

I hope this helps ;p

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Alex_Xolod [135]

Answer:

x = 1 and y = 1

Step-by-step explanation:

7(1) minus 3(1) = 4

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Answer:

Step-by-step explanation:

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3 years ago
What is 2 2/3 in simplest form
Montano1993 [528]
Mixed fraction: 8/2
6 0
2 years ago
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In the Salk vaccine field trial, 400,000 children were part of a randomized controlled double-blind experiment. Just about half
EastWind [94]

Answer:

Step-by-step explanation:

From the given information:

The number of children that were randomly allocated to each vaccination group; n₁ = 200,000

No of polio cases X₁ = 57

Now, in the vaccine group:

the proportion of polio cases is:

\hat p_1 = \dfrac{57}{200000}

=  0.000285

The number of children that were randomly allocated to the placebo group, n₂ = 200,000

No of polio cases X₂ = 142

In the placebo group

the proportion of polio cases is:

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H₀: There is no difference in the proportions of polio cases between both groups.  

H₁: There is a difference in the proportions of polio cases between both groups.

Let assume that the level of significance ∝ = 0.05

The test statistic  can be computed as:

Z = \dfrac{\hat p_1-\hat p_2}{\sqrt{\dfrac{\hat p_1 \hat q_1}{n_1}+ \dfrac{\hat p_2 \hat q_2}{n_2}}}

Z = \dfrac{0.000285-0.000710}{\sqrt{\dfrac{0.000285(1-0.000285)}{200000}+ \dfrac{0.000710(1-0.000710)}{200000}}}

Z = \dfrac{-4.25\times 10^{-4}}{\sqrt{\dfrac{0.000285(0.999715)}{200000}+ \dfrac{0.000710(0.99929)}{200000}}}

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From the Z - tables

P-value =  2 × 0.0000

= 0.000

We reject the H₀ provided that P-value is very less.

Therefore, we may conclude that there is a difference in the proportions of polio cases between the vaccine group and placebo group not due to chance.

7 0
2 years ago
A tabletop in the shape of a trapezoid has an area of 5,658 square centimeters. Its longer base measures 119 centimeters, and th
Sedaia [141]
The formula for finding the area of a trapezoid is: sum of bases*height*1/2
By plugging in the information that we already have, we know: (119+65)*height*1/2=5658
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height=61.5cm.

Check:
119+65=184
184*61.5=11316
11316*1/2=5658
3 0
3 years ago
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