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3 years ago

Can someone help me and explain it

Mathematics

1 answer:

ASHA 777 [7]3 years ago

8 0

Answer:

2.28 x 10^10

Step-by-step explanation:

(3.8 x 10^6) (6 x 10^3) do distributive property 3.8 to 6 and 10^6 to 10^3

22.8 x 10^9 since its 22.8 you have to make it in "once" place, therefore, move the decimal to the left and add the exponent "1"

2.28 x 10^10 is the answer

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Giovanni was playing with blocks and started with one blue triangular block and kept adding more

raketka [301]

Blocks would he need on the 12th step of the pattern is 34.

The correct option is A

<h3></h3><h3>What is series?</h3>

A series is the cumulative sum of a given sequence of terms.

Given:

We can write the series as follows:

1,4,7,10,13,.......

First term =1

common difference= 4-1=3

Using Arithmetic series

$a_{12}\\$ = a+11d

= 1 +11*3

= 1+33

= 34.

Hence, 34 blocks need on 12th step.

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Step-by-step explanation:

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Suppose that several insurance companies conduct a survey. They randomly surveyed 350 drivers and found that 280 claimed to alwa

KATRIN_1 [288]

Answer:

Lower limit = 0.76

Upper limit = 0.84

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 350

Number of drivers that buckle = 280

Formula:

$p' = \dfrac{x}{n} = \dfrac{280}{350} = 0.8$

$q' = 1-p' = 1 - 0.8 = 0.2$

The standard deviation for sp =

$=\sqrt{\displaystyle\frac{p'q'}{n}}\\\\=\sqrt{\dfrac{0.8\times 0.2}{350}} = 0.02138$

95% Confidence Interval:

$p' \pm z_{critical}(s_p)$

$z_{critical}\text{ at}~\alpha_{0.05} = \pm 1.96$

Putting the values, we get,

$0.8 \pm 1.96(0.02138)\\= 0.8 \pm 0.0419048\\=(0.7580952, 0.8419048)\\\approx (0.76,0.84)$

Lower limit = 0.76

Upper limit = 0.84

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3 years ago