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3 years ago

Sarah made two dozen

1 answer:

3 0

Answer: 6.28 cm

Explanation: The radius of a circle is half of the diameter, therefore you divide the diameter by two to find the radius.

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Translate the sentence into an inequality.

vichka [17]

Answer:

$2(n-10)\leq -28$

6 0

3 years ago

The ages of 11 students enrolled in an on-line macroeconomics course are given in the following steam-and-leaf display:

blsea [12.9K]

Answer:

The standard deviation of the age distribution is 6.2899 years.

Step-by-step explanation:

The formula to compute the standard deviation is:

$SD=\sqrt{\frac{1}{n}\sum\limits^{n}_{i=1}{(x_{i}-\bar x)^{2}}}$

The data provided is:

X = {19, 19, 21, 25, 25, 28, 29, 30, 31, 32, 40}

Compute the mean of the data as follows:

$\bar x=\frac{1}{n}\sum\limits^{n}_{i=1}{x_{i}}$

$=\frac{1}{11}\times [19+19+21+...+40]\\\\=\frac{299}{11}\\\\=27.182$

Compute the standard deviation as follows:

$SD=\sqrt{\frac{1}{n}\sum\limits^{n}_{i=1}{(x_{i}-\bar x)^{2}}}$

$=\sqrt{\frac{1}{11-1}\times [(19-27.182)^{2}+(19-27.182)^{2}+...+(40-27.182)^{2}]}}\\\\=\sqrt{\frac{395.6364}{10}}\\\\=6.28996\\\\\approx 6.2899$

Thus, the standard deviation of the age distribution is 6.2899 years.

7 0

3 years ago

Can yell help me pweaseeeee I need help with 7

-Dominant- [34]

Answer:

False

Step-by-step explanation:

Lines that intersect at right angles are called parallel. False

They are called intersecting lines.

8 0

3 years ago

Read 2 more answers

An athletic club buys car magnets and pom-poms for club members. The car magnets cost 4.95 each, and pom-poms cost each. The ath

VLD [36.1K]

Answer:

Each car magnet costs $4.95 and each pom-pom costs $0.425

The club spent $495 on 100 car magnets and $85 on 200 pom-poms.

Step-by-step explanation:

I guess that we have to calculate the price of pom-poms and how much money was spent purchasing car magnets and pom-poms.

x + y = 300

2x = y (now we replace y)

x + 2x = 300

3x = 300

x = 100

The club purchased 100 car magnets and 200 pom-poms.

To determine the price of each pom-pom:

($4.95 x 100) + 200P = $580

$495 + 200P = $580

200P = $85

P = $0.425

6 0

3 years ago

Put 1.09, 1.0, 1.9, 1.19, 1.1 on a number line in order?

Luden [163]

Answer:

1.0, 1.09, 1.1, 1.19, 1.9

Step-by-step explanation:

Basic ordering of decimals

7 0

3 years ago