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3 years ago

12

"I used bookstore will trade 2 of its book for 3 of yours. if Val brings in 18 books to trade, how many books can she get from t

he store?"

1 answer:

sleet_krkn [62]3 years ago

4 0

She would get 12 books
2:3 =?:18

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What is the approximate value of b, rounded to the nearest tenth? Use the law of sines to find the answer. Law of sines: answers

Dominik [7]

Answer:

$\boxed{\text{2. 4.7 units}}$

Step-by-step explanation:

Assume your triangle has the dimensions shown below.

Before we can use the Law of Sines, we must find ∠C.

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$\begin{array}{rcl}A + B + C & = & 180^{\circ}\\66^{\circ} + 76^{\circ} + C & = & 180^{\circ}\\142^{\circ} + C & = & 180^{\circ}\\C & = & 38\, ^{\circ}\\\end{array}$

2. Calculate b

Use the Law of Sines

$\begin{array}{rcl}\dfrac{b}{\sin B } & = & \dfrac{c}{\sin C}\\\\\dfrac{b}{\sin 76^{\circ}} & = & \dfrac{3}{\sin 38^{\circ}}\\\\\dfrac{b}{0.9703} & = & \dfrac{3}{0.6157}\\\\ & = & 4.873\\b & = & 0.9703\times 4.873\\& = & \boxed{\mathbf{4.7}}\\\end{array}$

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3 years ago

Standardized tests: In a particular year, the mean score on the ACT test was and the standard deviation was . The mean score on

Scorpion4ik [409]

Complete question :

Standardized tests: In a particular year, the mean score on the ACT test was 19.3 and the standard deviation was 5.3. The mean score on the SAT mathematics test was 532 and the standard deviation was 128. The distributions of both scores were approximately bell-shaped. Round the answers to at least two decimal places. Part: 0/4 Part 1 of 4 (a) Find the z-score for an ACT score of 26. The Z-score for an ACT score of 26 is

Answer:

1.26

Step-by-step explanation:

Given that:

For ACT:

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Zscore for ACT score of 26;

Using the Zscore formula :

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Zscore :

(26 - 19.3) / 5.3

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4 years ago

8 is what percent less than 10

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8 is <em>2</em><em>0%</em> less than 10.

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A Cone has a radius of 3 and a height of 5. solve.

Alexus [3.1K]

Assuming your looking for volume.

The following formula is used for calculating the volume (V) of a cone.

$\boxed{V=\frac{1}{3}\pi r^{2} h}$

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