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
n200080 [17]
3 years ago
5

Lacy walks 3 miles in one hour. how many feet does Lacy walk in 30 minutes

Mathematics
1 answer:
lapo4ka [179]3 years ago
8 0
I believe the answer is 7920 feet.
You might be interested in
2+1.25f=10-2.75f2+1.25f=10−2.75f solve for f pls
krek1111 [17]
The answer to your question would be 2.

(please give thanks if i am correct)
4 0
3 years ago
3+n=7<br> 13.75e+39.50n=122.00<br><br> Plzzzz help I will mark your brainliest plzzz help I need it
vitfil [10]
The first one is 4 and the last one is 2.14237024 u can put all of that in if u want
6 0
2 years ago
Please help me find the answer pls​
fiasKO [112]

Answer:

A. Solutions are: x = 2, y = 1.

B. Solutions are: x = 3, y = 2.

C.

1. Inconsistent

2. Inconsistent

3. Consistent

Step-by-step explanation:

A. Solutions of each system of linear equations by substitution method:

Equation 1:      3x - 2y = 4

Equation 2:               x = 2y

<u>Step 1:</u> Substitute x = 2y into the Equation 1:

3(2y) - 2y = 4

6y - 2y = 4

4y = 4

Step 2: Divide both sides of the equation by 4 to isolate y:

\frac{4y}{4}  = \frac{4}{4}

y = 1.

<u>Step 3:</u> For Equation 2, x = 2y, substitute y = 1 into the equation to solve for x:

x = 2y  

x = 2(1)

x = 2  

Therefore, the solutions are:  x = 2, y = 1.

B. Find the solutions of each system of linear equations by elimination method:  

Equation 1:      2x + y = 8

Equation 2:        x + y = 5

<u>Step 1:</u> Multiply Equation 2 by 2:  

2(x + y) =  5(2)

2x + 2y = 10

<u>Step 2:</u> Subtract Equation 1 from the equation derived from Step 1,  2x + 2y = 10:

   2x + 2y = 10

-  <u>2x +  y  =   8</u>

        y =   2

Step 3: Plug in y =  2 into Equation 1, 2x + y = 8 to solve for x:

2x + y = 8

2x + (2) = 8

<u>Step 4:</u> subtract both sides of the equation by 2 to isolate x:

2x + 2 - 2 = 8 - 2

2x = 6

<u>Step 5:</u> Divide both sides of the equation by 2 to solve for x:

\frac{2x}{2}  = \frac{6}{2}

x = 3.

The solutions are: x = 3, y = 2.

C:

1. Inconsistent

2. Inconsistent  

3. Consistent (infinitely many solutions)

3 0
3 years ago
In a random sample of 600 cars making a right turn at a certain intersection, 157 pulled into the wrong lane. Test the hypothesi
nevsk [136]

Answer:

a)

<em>The statistic value |Z| = 2.053 > 1.96 at 0.05 Level of significance</em>

<em>Null hypothesis is rejected</em>

<em>Alternative hypothesis is Accepted</em>

<em> Actually 30% of all drivers make not this mistake at the given intersection</em>

<em>b)</em>

<em>The test statistic value |Z| = 2.053 >2.576 at 0.01 Level of significance</em>

<em>Null hypothesis is Accepted</em>

<em> Actually 30% of all drivers make this mistake at the given intersection</em>

Step-by-step explanation:

<u><em>Step(i):</em></u>-

Given Population proportion = 30% or 0.30

Given data In a random sample of 600 cars making a right turn at a certain intersection, 157 pulled into the wrong lane

sample proportion

          p^{-} = \frac{x}{n} = \frac{157}{600} = 0.2616

<em>Null hypothesis:- H₀: p = 0.30</em>

<em>Alternative  hypothesis : H₁:p≠0.30</em>

<u><em>Step(ii):-</em></u>

a)

<em>Test statistic </em>

        Z = \frac{p^{-}-P }{\sqrt{\frac{p(1-p)}{n} } }

      Z = \frac{0.2616-0.30 }{\sqrt{\frac{0.30(1-0.30)}{600} } }

     Z =  -2.053

<em>     |Z| = |-2.053| = 2.053</em>

<em>Level of significance = 0.05</em>

<em>Z₀.₀₅ = 1.96</em>

<em>The calculated value |Z| = 2.053 > 1.96 at 0.05 Level of significance</em>

<em>Null hypothesis is rejected</em>

<em>Alternative hypothesis is Accepted</em>

<u><em>Conclusion:</em></u><em>-</em>

<em> Actually 30% of all drivers make not this mistake at the given intersection</em>

<em>b)</em>

<em>Given level of significance  = 0.01</em>

<em>Z₀.₀₁ = 2.576</em>

<em>The calculated value |Z| = 2.053 >2.576 at 0.01 Level of significance</em>

<em>Null hypothesis is Accepted</em>

<em> Actually 30% of all drivers make this mistake at the given intersection</em>

7 0
2 years ago
Super Easy Question LOL <br> PLEASE ANSWER!!!!
Ray Of Light [21]

Answer:

B

Step-by-step explanation:

Please mark me brainliest

5 0
3 years ago
Read 2 more answers
Other questions:
  • URGENT DUE IN 10 MINS Suppose that the function f(x) = 5.32 + 0.80x represents the cost of mailing an object that weighs x pound
    12·1 answer
  • 275/20 simplified (lmbo it told me to add more characters)
    10·2 answers
  • i need a data set for a project and i cant think of 2 things to compare please help quick will give brainliest please give me 2
    11·1 answer
  • What set of Transformations are applied to parallelogram ABCD to create A'B'C'D'?​
    11·1 answer
  • Pete is solving for x in the problem to the right. He has decided that these angles are supplementary as 4x+16 is also the measu
    9·1 answer
  • If y varies inversely as x, find the constant of variation if y= 3 when x = -2.
    10·1 answer
  • If you doubled the radius of a sphere, how would the volume change? A. The volume would double. B. The volume would triple. C. T
    15·1 answer
  • Six groups of students sell 162 balloons at the school carnival there are 3 students in each group iffy each student sells the s
    7·1 answer
  • I need the answer <br><br> Hdhehxjsvdis
    11·1 answer
  • 2
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!