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
OLEGan [10]
3 years ago
5

a milha eh uma unidade usada para medir distancias. ela equivale a cerca de 1,6 quilometros. se cada carro percorrer 240 quilome

tros, quantas milhas tera percorrido? urgente
Mathematics
1 answer:
Pani-rosa [81]3 years ago
6 0

Classica aplicação de regra de 3:

é dito que: 1 milha = 1,6km

Logo, eis a regra de 3:

  milha           km

     1   --------    1,6

     X  --------   240

1,6X = 240.1

X = 240/1,6

<h3>X = 150milhas</h3><h3 />

Logo 240km equivalem a 150milhas

You might be interested in
If a boy has 4 pairs of shorts, 8 shirts, and 2 pairs of shoes, how many different outfits could he wear?
sveta [45]

Answer:

64

Step-by-step explanation:

I paired the first shirt with all of the pants and both shoes which was 8 outfits, but here are 8 other shirts which will also make 8 outfits.

4 0
3 years ago
One number is 6 more than another. Twice the larger number is 5 times the smaller.
tresset_1 [31]

Answer:

The smaller number is 4

Step-by-step explanation:

Larger number = x

Smaller number = y

Write 2 equations

y + 6 = x

2x = 5y

Substitute x in the first equation to the second equation

2(y + 6) = 5y

Multiply 2(y + 6)

2y + 12 = 5y

Subtract 2y from both sides of the equation

12 = 3y

Divide both sides of the equation by 3

y = 4

x = y + 6 = 4 + 6 = 10

The smaller number is 4

Hope this helps :)

3 0
3 years ago
Help I will mark you brainly​
Ludmilka [50]

Answer:

<em>Hi</em><em> </em><em>there</em><em>!</em><em>!</em>

<em>The</em><em> </em><em>answer</em><em> </em><em>would be</em><em> </em><em>x</em><em>=</em><em>2</em><em>0</em><em> </em><em>and</em><em> </em><em>y</em><em>=</em><em> </em><em>1</em><em>0</em><em> </em><em>root</em><em> </em><em> </em><em>3</em><em> </em><em>or</em><em> </em><em>on</em><em> </em><em>decimal</em><em> </em><em>it's</em><em> </em><em>1</em><em>7</em><em>.</em><em>3</em><em>2</em><em>.</em>

<em>explanation</em><em> </em><em>look</em><em> </em><em>in</em><em> </em><em>picture</em><em>,</em><em> </em><em>alright</em><em>. </em>

<em><u>I</u></em><em><u> </u></em><em><u>hope</u></em><em><u> </u></em><em><u>it will</u></em><em><u> </u></em><em><u>help u</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em>

5 0
3 years ago
Read 2 more answers
A university dean is interested in determining the proportion of students who receive some sort of financial aid. Rather than ex
Olenka [21]

Answer:

a

 The  90% confidence interval that  estimate the true proportion of students who receive financial aid is

     0.533  <  p <  0.64

b

   n = 1789

Step-by-step explanation:

Considering question a

From the question we are told that

      The sample size is  n = 200

      The number of student that receives financial aid is k = 118

Generally the sample proportion is  

      \^ p = \frac{k}{n}

=>   \^ p = \frac{118}{200}

=>   \^ p = 0.59

From the question we are told the confidence level is  90% , hence the level of significance is    

      \alpha = (100 - 90 ) \%

=>   \alpha = 0.10

Generally from the normal distribution table the critical value  of \frac{\alpha }{2}  is  

   Z_{\frac{\alpha }{2} } =  1.645

Generally the margin of error is mathematically represented as  

     E =  Z_{\frac{\alpha }{2} } * \sqrt{\frac{\^ p (1- \^ p)}{n} }

 =>E =  1.645 * \sqrt{\frac{0.59 (1- 0.59)}{200} }

=>  E = 0.057

Generally 90% confidence interval is mathematically represented as  

      \^ p -E <  p <  \^ p +E

  =>  0.533  <  p <  0.64  

Considering question b

From the question we are told that

    The margin of error  is  E = 0.03

From the question we are told the confidence level is  99% , hence the level of significance is    

      \alpha = (100 - 99 ) \%

=>   \alpha = 0.01

Generally from the normal distribution table the critical value  of   is  

   Z_{\frac{\alpha }{2} } = 2.58

Generally the sample size is mathematically represented as      

        [\frac{Z_{\frac{\alpha }{2} }}{E} ]^2 * \^ p (1 - \^ p )

=>      n = [\frac{2.58}{0.03} ]^2 * 0.59 (1 - 0.59 )

=>      n = 1789

8 0
3 years ago
In a 30° -60° -90° triangle, what is the length of the hypotenuse when the shorter leg is 8 m? Enter your answer in the box.
yan [13]

Answer:

16

Step-by-step explanation:

In a 30 60 90 degree triangle, the hypotenuse is always double the shorter leg. Hope this helps! :)

3 0
3 years ago
Other questions:
  • A relation must have exactly one output for every input. T/F?
    5·2 answers
  • What is the solution to the equation 6y –2(y + 1) = 3(y – 2) + 6?
    14·1 answer
  • Angie went shopping for her son’s graduation party. She spent $281 on food, $143 on paper goods, and $164 on decorations. What i
    7·1 answer
  • Solve: 2x+1-14x=-71<br> This is for 7th grade mathematics. Please help!
    5·1 answer
  • Given: ABCD trapezoid<br> BC=1.2m, AD=1.8m<br> AB=1.5m, CD=1.2m<br> AB∩CD=K<br> Find: BK and CK
    5·2 answers
  • 5.6 yd<br> 5 yd<br> 12 yd<br> What is the area
    5·1 answer
  • An adventure company wants to run a zip line from the top of one building that is 95 feet tall to the top of another building th
    5·1 answer
  • What is the solution to the inequality x2 &lt; 16 – 6x?
    10·1 answer
  • ( 4x2 - 4 ) = ( 2x - 2)(2x + ---)
    15·1 answer
  • A circle is defined by the equation given below.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!