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3 years ago

8

Marshall has $8.25 totally in his collection, consisting of quarters and nickels. The number of nickels is three more than the n

umber of quarters. How many nickels and how
many quarters does Ross have?

1 answer:

vagabundo [1.1K]3 years ago

7 0

Answer:

where did Ross come from? is that just misplaced or what. or am I reading it all wrong

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Find the common ratio for the following geometric sequence. 0.75,1.5,3,6,...

Rasek [7]

Answer:

<h2>2</h2>

Step-by-step explanation:

$\text{If}\ a_1,\ a_2,\ a_3,\ a_4,\ ...\ ,\ a_n\ \text{is a geometric series, then}\\\\\dfrac{a_2}{a_1}=\dfrac{a_3}{a_2}=\dfrac{a_4}{a_3}=...=\dfrac{a_n}{a_{n-1}}=r=constant$

$\text{We have}\ 0.75,\ 1.5,\ 3,\ 6,\ ...\\\\\text{The common ratio}\ r:\\\\\dfrac{1.5}{0.75}=2\\\\\dfrac{3}{1.5}=2\\\\\dfrac{6}{3}=2\\\\\boxed{r=2}$

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3 years ago

A new aircraft control system is being designed that must be 98.0% reliable. This system consists of two components in series.

sweet [91]

Answer:

98.99%

Step-by-step explanation:

The combined reliability of both components must be 98%. Given that both components must be functional and have the same reliability 'r', the minimum value of 'r' that meets the system requirements is given by:

$0.98 = r^2\\r=0.9899=98.99\%$

The level of reliability required for each component is 98.99%.

6 0

3 years ago

Pani-rosa [81]

Answer:

8

Step-by-step explanation:

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3 years ago

Read 2 more answers

Identify the amount, base, and percent in the problem: What is 60% of 485?

IrinaK [193]

Hey there! I'm happy to help!

The percent in the problem is 60% (as it has a percent time).

The base is the number we start with, so it is 485.

The amount is the percent of the base. As a decimal, 60% is 0.6. So, we just multiply this by 485.

0.6×485=291

Therefore, the amount is 291.

AMOUNT: 291

BASE: 485

PERCENT: 60%

Have a wonderful day! :D

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4 years ago

Cara saw an advertisement claiming 5 out of 6 students prefer talking on the phone over texting. She predicts that 500 out of 60

Sever21 [200]

5/6 is not the definite ratio, when you take a larger sample size it could be off by a bit like 499/600 or 501/600

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3 years ago