All categories

2 years ago

Which expression is equivalent to (5x10^-3)+(6x10^-3)/22x10^4

Mathematics

1 answer:

Alisiya [41]2 years ago

4 0

I dont know

23423423423423324234234234234

You might be interested in

HELP!!!!!<br> ME!!!!!!!!<br> PLS!!!!!!!!

chubhunter [2.5K]

Answer:

Step-by-step explanation:

I'm not that smart, but. I have a gut feeling this is right.

6 0

2 years ago

Read 2 more answers

What are the values of x and y if this equation is true?<br><br> 22(x + yi) + (28 + 4i) 72 – 62i

ASHA 777 [7]

Answer:

x = 2

y = -3

Step-by-step explanation:

The given equation is,

22(x + yi) + (28 + 4i) = 72 - 62i

By solving this equation further,

22x + 22yi + 28 + 4i = 72 - 62i

(22x + 28) + (22y + 4)i = 72 - 62i

Now both the sides of the equation is in the form of complex number,

By comparing real and imaginary parts given on both the sides,

22x + 28 = 72

22x = 72 - 28

22x = 44

x = 2

22y + 4 = -62

22y = -62 - 4

22y = -66

y = -3

Therefore, x = 2 and y = -3 are the values for which the given equation is true.

8 0

3 years ago

A store owner buys a case of 144 pens for $28.80. He sells the pens for $0.40 each. The owner claims that they marked the pens u

stellarik [79]

Answer: $0.3

Step-by-step explanation:

Given

The owner buys 144 pens for $28.80 i.e. each pen costs

$\dfrac{28.80}{144}=\$0.2$

owner sells the pen at $0.4 i.e. price marked up by

$\Rightarrow \dfrac{0.4-0.2}{0.2}\times 100=100\%$

So, the claim of the owner is incorrect

The actual increase in the price to get 50% markup

$\Rightarrow 0.2\times (1+0.5)=\$0.3$

6 0

2 years ago

A publisher reports that 45% of their readers own a laptop. A marketing executive wants to test the claim that the percentage is

nexus9112 [7]

Answer:

$z=\frac{0.40 -0.45}{\sqrt{\frac{0.45(1-0.45)}{370}}}=-1.933$

$p_v =2*P(z$

Step-by-step explanation:

Information given

n=370 represent the sample selected

$\hat p=0.4$ estimated proportion of readers owned a laptop

$p_o=0.45$ is the value that we want to test

z would represent the statistic

$p_v$ represent the p value

Creating the hypothesis

We need to conduct a hypothesis in order to test if the true proportion of readers owned a laptop is different from 0.45, the system of hypothesis are:

Null hypothesis: $p=0.45$

Alternative hypothesis: $p \neq 0.45$

The statistic is:

$z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}}$ (1)

Replacing we got:

$z=\frac{0.40 -0.45}{\sqrt{\frac{0.45(1-0.45)}{370}}}=-1.933$

Calculating the p value

We have a bilateral test so then the p value would be:

$p_v =2*P(z$

8 0

2 years ago

How many 1/2s are in 7?

Ronch [10]

There are approximately 14 halves

6 0

2 years ago