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3 years ago

V= u + at, find v, when u = 12, a = 5 and t = 7

Mathematics

2 answers:

Mila [183]3 years ago

6 0

Answer:

Final velocity (v) = 47 m/s

Step-by-step explanation:

u = 12

a = 5

t = 7

v = ?

v = u + at (first law of motion)

v = 12 + (5 × 7)

v = 12 + 35

v = 47 m/s.

katrin [286]3 years ago

5 0

Answer:

V=47

Step-by-step explanation:

12+5x7

12+35

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A trader claims that the proportion of stocks that offer dividends is different from 0.14. If the trader wants to conduct a hypo

Korvikt [17]

Answer:

The correct option is;

Two-tailed test

Step-by-step explanation:

From the interpretation of the question statement, the trader wants to conduct a hypothesis test on the trader's claim that the proportion of stocks that offer dividends is different from 0.14

Given that the difference is hypothesized, then the null hypothesis, H₀ and the alternative hypothesis, H₁ should be written as follows;

H₀: Null hypothesis (no difference, or no change)

H₁: μ ≠ μ₀ which is hypothesizing difference which is known as a two-tailed test

The confidence level is then selected and the test statistic is calculated

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3 years ago

The following describes a sample. The information given includes the five number summary, the sample size, and the largest and s

lys-0071 [83]

Answer:

$L= Q_1 - 1.5*IQR = 210 -1.5*40 =150$

$U= Q_3 + 1.5*IQR = 250 +1.5*40 =310$

And if we analyze the info provided we have 500 values

Tails: 160,165,167,171,175,...,268,269,269,269,270,270

So as we can see on the tails any values is <150 or >310 so then for this case we cannot consider as outliers any of the values on the tails of the distribution.

Step-by-step explanation:

For this case we have the 5 number summary

(160,210,220,250,270)

So then we have:

minimum = 160 , Q1 = 210, Q2= Median=220, Q3 = 250, Max=270

If we find the interquartile range we got:

$IQR = Q_3 -Q_1 = 250-210 =40$

For this case we need to find the lower and upper limit with the following formulas:

$L= Q_1 - 1.5*IQR = 210 -1.5*40 =150$

$U= Q_3 + 1.5*IQR = 250 +1.5*40 =310$

And if we analyze the info provided we have 500 values

Tails: 160,165,167,171,175,...,268,269,269,269,270,270

So as we can see on the tails any values is <150 or >310 so then for this case we cannot consider as outliers any of the values on the tails of the distribution.

4 0

4 years ago

Arrange the following polynomial into descending order for x, then interpret the degree of the 3rd term. 2xy4 + 2x2y − 3y2 + 10x

Darina [25.2K]

The arrangement should be based on the decreasing degree of the terms which may be determined by the variable x as it should come first in alphabetical order. The polynomial is then,
10x³ + 2x²y + 2xy^4 - 3y²
The degree is equal to the sum of the exponents. Thus, the answer is 5 and it is letter D.

8 0

3 years ago

Read 2 more answers

Number four and 5????

pychu [463]

Answer:

●-4

●2

a) f(x) = 18x if x≤5

6x+90 if x>5

b) 150

Step-by-step explanation:

4 0

4 years ago

Pls help best answer brainest

Korolek [52]

<h3>Answer: Associative Property</h3>

==================================================

Explanation:

The given equation is in the form

a + (b+c) = (a+b) + c

where,

a = -2.2
b = -3.7
c = -1.4

The associative property of addition is what specifically is being applied. There's a multiplication version of this property as well. The associative property is the idea where we can move parenthesis around to group terms in different ways, and still get the same result regardless of what we did with the parenthesis.

------------

The associative property only works with addition and multiplication. Something like subtraction will be a different story

Eg: 1-(2-3) is different from (1-2)-3, so a-(b-c) is not the same as (a-b)-c

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3 years ago