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3 years ago

Can sum1 help me plz?

Mathematics

2 answers:

Rzqust [24]3 years ago

7 0

The answer is b) y=2x+11.

Pepsi [2]3 years ago

6 0

Im too sure but i think its y=-2x+2

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What is the following product

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Answer:

option D

60√3 - 21√6

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3 years ago

Round 2,178,421 to the nearest ten thousand.

UNO [17]

2,180,000 80,000 being rounded up from 78,421

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3 years ago

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Recent research published by Frumin and colleagues (2011) in the journal Scienceaddresses whether females' tears have an effect

iogann1982 [59]

Answer: Option C. [0.95, 1.59].

Step-by-step explanation:

We know that the mean is:

M = 1.27

and the margin of error is:

e = 0.32

This means that the actual value can be at a maximum distance of 0.32 from the mean.

then the interval will be:

[M - e, M + e].= [1.27 - 0.32, 1.27 + 0.32].= [0.95, 1.59].

The correct option is C.

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3 years ago

Because of the relatively high interest rates, most consumers attempt to pay off their credit card bills promptly. However, this

Anastasy [175]

Answer:

Step-by-step explanation:

Let X be average interest paid monthly by a bank's Visa cardholders

Given that X is N(28, 8)

In the following to find out probability we convert X to z score and use std normal distribution table

Z = $\frac{x-28}{8}$

Probability being less than 1 is here equal to the proportion also.

A) P(X>32) = P(Z>0.5)=0.5-0.1915=0.3085

B) P(X>40) = P(Z>1)=0.5-0.3413=0.1687

C) P(X<19) = P(Z<-1.125)=0.5-0.0438=0.4562

D) We have to find 19th percentile here

Z =-0.88

$X=28-0.88(8)\\=20.96$

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3 years ago

Alexandra invested $800 in an account paying an interest rate3.1% compounded continuously. Assuming no deposits or withdrawals a

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$\bf ~~~~~~ \textit{Continuously Compounding Interest Earned Amount} \\\\ A=Pe^{rt}\qquad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill & \$800\\ r=rate\to 3.1\%\to \frac{3.1}{100}\dotfill &0.031\\ t=years\dotfill &20 \end{cases} \\\\\\ A=800e^{0.031\cdot 20}\implies A=800e^{0.62} \\\\\\ A\approx 1487.14\implies A=\stackrel{rounded~up}{1500}$

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3 years ago