1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Sergeu [11.5K]
3 years ago
9

Which choice is equivalent to √3 *√8*√5 A. 2√30 B. 4√30 C. 10√12 D. 24√5

Mathematics
2 answers:
madreJ [45]3 years ago
6 0

\implies {\blue {\boxed {\boxed {\purple {\sf { A. \:2 \sqrt{30} }}}}}}

\sf \bf {\boxed {\mathbb {STEP-BY-STEP\:EXPLANATION:}}}

=  \sqrt{3}  \times  \sqrt{8}  \times  \sqrt{5}

=   \sqrt{3 \times 2 \times 2 \times 2 \times 5}

= \sqrt{ ({2})^{2}  \times 2 \times 3 \times 5}

= 2 \sqrt{2 \times 3\times 5}

= 2 \sqrt{30}

<h3><u>Note</u>:</h3>

\sqrt{ ({a})^{2} }  = a

\bold{ \green{ \star{ \orange{Mystique35}}}}⋆

jasenka [17]3 years ago
4 0

Answer:

A. 2√30

Step-by-step explanation:

\small  \sf \: \sqrt{3}  \times  \sqrt{8}  \times  \sqrt{5}  \\

split √8

\small \sf \leadsto \sqrt{3 × 2 × 2 × 2 × 5}

\small \sf \leadsto \: 2 \sqrt{2 \times 3 \times 5}

\small \sf \leadsto \: 2 \sqrt{30}

You might be interested in
A rocket is launched into the air. The height h(t), in yards, of the rocket is a function of time, t, in seconds, as shown in th
Mrac [35]
The answer is 5) 20
3 0
3 years ago
Solve the following equation for 0° ≤ θ &lt; 360°. Use the "^" key on the keyboard to indicate an exponent. For example, sin2x w
never [62]

<u>Answer-</u>

\boxed{\boxed{x=90^{\circ},270^{\circ}}}

<u>Solution-</u>

The given equation-

\Rightarrow 2\sin^2 x-\cos^2 x-2=0

As

\sin^2 x+\cos^2 x=1\ \ \Rightarrow \cos^2 x=1-\sin^2 x

Putting this,

\Rightarrow 2\sin^2 x-(1-\sin^2 x)-2=0

\Rightarrow 2\sin^2 x-1+\sin^2 x-2=0

\Rightarrow 3\sin^2 x-3=0

\Rightarrow 3\sin^2 x=3

\Rightarrow \sin^2 x=1

\Rightarrow \sin x=\sqrt1

\Rightarrow \sin x=\pm 1

\Rightarrow \sin x=1,\ \sin x=-1

\Rightarrow x=\sin^{-1}(1),\ x=\sin^{-1}(-1)

\Rightarrow x=90^{\circ}+n360^{\circ},\ x=270^{\circ}+n360^{\circ}

Where n=0, 1, 2, ......

As given 0° ≤ x < 360°, so putting n = 0

\Rightarrow x=90^{\circ},\ x=270^{\circ}


3 0
4 years ago
At a county fair 9 people out of 1000 earned a perfect score in a carnival game what decimal represent the number of people who
coldgirl [10]
0.009 people because 9/1000 is 0.009<span />
5 0
4 years ago
Read 2 more answers
Please help!!! "Find the interquartile range (IQR) of the data in the box plot below.
never [62]

Answer:

For interquartile range, you will need to find the range of the boxes, and not the line since for the lower quartile is 5.5 and the higher qaurtile is 7, the interquatile range is 1.5

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Construct a confidence interval that will capture the true population mean with 95% confidence. Population standard deviation is
kompoz [17]

A confidence interval that will capture the true population mean with 95% confidence. The value is ( 23.6459    , 24.8293 ) .

What is population mean?

A population in statistics is a group of comparable objects or occurrences that are relevant to a particular topic or experiment. A statistical population can be a collection of real things or a hypothetical, possibly limitless collection of objects derived from experience.

Data: 18

for given data

$$\begin{aligned}\bar{X} & =\frac{\sum X i}{n} \\& =2448 / 101 \\& =24.2376\end{aligned}$$

as population variance is unknown so we used sample variance

$$\begin{aligned}S^2 & =\frac{1}{n-1}\left(\sum X i^2-n \times \bar{X}^2\right) \\S^2 & =\frac{1}{100}\left(60232-101 \times 24.2376^2\right) \\& =8.9830\end{aligned}$$

Now

\frac{\bar{X}-\mu}{S / \sqrt{n}} \sim t_{n-1}$$

hence 95 % of population mean is

As n=101 which is large so critical value is 1.98397

$$\begin{aligned}& =\left(\bar{X}-\sqrt{\frac{S}{n}} \times t_{(n-1, \alpha / 2)}, \bar{X}+\sqrt{\frac{S}{n}} \times t_{(n-1, \alpha / 2)}\right) \\& =\left(24.2376-\sqrt{\frac{8.9830}{101}} \times 1.98397,24.2376+\sqrt{\frac{8.9830}{101}} \times 1.98397\right) \\& =(23.6459,24.8293)\end{aligned}$$

To learn more about statistics visit:brainly.com/question/29093686

#SPJ4

4 0
1 year ago
Other questions:
  • What is the percent of change of 8.6 and 9.2
    14·1 answer
  • What is the approximate area of a semicircle with a radius of 8 ft? Use π=3.14 . Enter your answer in the box. The area of the s
    6·2 answers
  • Compute the total cost of the meal to the nearest cent: meal costs $29.78 plus 5% tax and 15% tip.
    9·1 answer
  • a rectangular prism has a height of 12 centimeters and a square base with sides measuring five centimeters
    15·1 answer
  • 20.) The area of a circle is given by the equation A = nr2. If the radius of a circle is equal to 6 centimeters,
    6·1 answer
  • Find the volume.<br> 15 points
    5·1 answer
  • It rained 3 out of 7 days. How many days might it rain in 35 days?
    8·1 answer
  • Please help LOL :) I need help ASAP
    8·2 answers
  • The difference in Cameron and Avery’s ages is 5. The product of their ages is 104. If Cameron is older, how old is Avery?
    13·1 answer
  • Solving systems of linear equations by substitution y= 2x-1 y = 3x +2
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!