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2 years ago

Need help asap. 10 POINTER

Mathematics

1 answer:

Lana71 [14]2 years ago

5 0

Answer:

Option 4

Step-by-step explanation:

4% = 0.04

2/5 = 0.4

3/8 = 0.375

So, the answer is 4%, 0.042, 3/8, 2/5.

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Whitch of the given systems is equivalent to the given system? In math

tensa zangetsu [6.8K]

Answer:

Two systems of equations are equivalent if they have the same solution(s).

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3 years ago

Draw a diagram using positive an negative tiles for this equation:<br> -5-(-7)=2

Wewaii [24]

Sadly there is no way to graph properly on this website.

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3 years ago

A number of runners enter a race. The times that each runner finished is based on every hour. Five runners finished the race in

Aleksandr [31]

The histogram for the data is given at the end of this answer.

<h3>What is an histogram?</h3>

An histogram is a graph that shows the number of times each element of x was observed.

In this problem:

The elements of x are given by the time in hours.

The histogram shows the number of runners that finished the race in x hours.

Hence, the graph given at the end of this answer is the histogram.

You can learn more about histogram at brainly.com/question/2962546

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3 years ago

A consumer organization inspecting new cars found that many had appearance defects (dents, scratches, paint chips, etc.). While

Murljashka [212]

Answer:

The expected number of appearance defects in a new car = 0.64

standard deviation = 0.93(approximately)

Step-by-step explanation:

Given -

7% had exactly three, 11% exactly two, and 21% only one defect in cars.

Let X be no of defects in a car

P(X=3) = .07 , P(X=2) = .11 , P(X=3) = .21

P(X=0 ) = 1 - .07 - .11 - .21 = 0.61

The expected number of appearance defects in a new car =

E(X) = $\nu$ = $= \sum X P(X) =3\times 0.07 + 2\times0.11 + 3\times0.21 + 0\times0.61$ = 0.64

$\sigma^{2}$ = variation of E(X) = $\sum (X - \nu) ^{2}P(X)$ = $(3 - 0.64) ^{2}\times0.07 + (2 - 0.64) ^{2}\times0.11 + (1 - 0.64) ^{2}\times0.21 + (0 - 0.64) ^{2}\times0.61$

= $(2.36) ^{2}\times0.07 + (1.36) ^{2}\times0.11 + (.36) ^{2}\times0.21 + ( 0.64) ^{2}\times0.61$ = 0.8704

standard deviation = $\sqrt{\sigma^{2}}$ = $\sqrt{0.8704^{2}}$ = 0.93(approximately)

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3 years ago

if the unit selling price is $2.50 and the unit cost is $1 what is the action needed to maintain the gross margin percentage whe

Nikolay [14]

The profit is originally 250% to maintain this you need to multiply the new unit cost by 2.5.
New unit cost $1.25. * 2.5 = $3.12.5

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3 years ago