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
LenKa [72]
3 years ago
7

Keith spent 1/5 of this money on a story book. He gave $26.80 to his brother and had 1/2 of his money left. How much money did h

e have left?
Mathematics
2 answers:
Mama L [17]3 years ago
6 0
1/5 = 2/10
1/2 = 5/10

2/10 of his money on a story book.
Storybook is the variable x

$26.80 to his brother (5/10 of his money left)

5/10-2/10 = 3/10

$26.80x3/10= 8.04

He had $8.04 left.
Aleks04 [339]3 years ago
3 0
Not really sure of this one but i think it's like this- 
2/10 (money for story) + 3/10 (26.80 dollars to brother)= 1/2 of his money
3/10x=26.80  268=3x ; x= 89.33333....
89.33 X 5/10= answer
money left= (roughly) 44.67
You might be interested in
!Help Help Help! lols
Gwar [14]

the Answer is c. I think

6 0
3 years ago
Read 2 more answers
a triangle pyramid has lateral faces with bases of 6meters and hights of 9 meters the area of the base of the pyramid
Alexxandr [17]
What is the question
6 0
3 years ago
In analyzing the city and highway fuel efficiencies of many cars and trucks, the mean difference in fuel efficiencies for the 60
Olegator [25]

Answer:

7.38-1.96\frac{2.51}{\sqrt{601}}=7.18    

7.38+1.96\frac{2.51}{\sqrt{601}}=7.58    

For this case the confidence interval is given by :

7.18 \leq \mu \leq 7.58

Step-by-step explanation:

Data provided

\bar X=7.38 represent the sample mean for the fuel efficiencies

\mu population mean

s=2.51 represent the sample standard deviation

n=601 represent the sample size  

Confidence interval

The formula for the confidence interval of the true mean is given by:

\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}   (1)

The degrees of freedom for this case is given by:

df=n-1=601-1=600

The Confidence level for this case is 0.95 or 95%, and the significance level \alpha=0.05 and \alpha/2 =0.025 and the critical value is given by t_{\alpha/2}=1.96

Replcing into the formula for the confidence interval is given by:

7.38-1.96\frac{2.51}{\sqrt{601}}=7.18    

7.38+1.96\frac{2.51}{\sqrt{601}}=7.58    

For this case the confidence interval is given by :

7.18 \leq \mu \leq 7.58

8 0
3 years ago
Use the three steps to solve the problem.
Oksana_A [137]

Answer:

If the second of the three numbers is  

n

, then the first and third are  

n-  1 and  n + 1 , so we find: 117 = ( n − 1 ) + n + ( n + 1 ) = 3n  

Dividing both ends by  

3  we find: n = 117/  3   = 39

So the three numbers are:

38 , 39 , 40

Step-by-step explanation : I hope it helps please don't forget to mark me brainliest  .  :)

4 0
3 years ago
Read 2 more answers
Solve the given equation. ( 1/5 )( 4/7 )x = 32/490 (x is and exponent) x= _____
Vikki [24]
X= 4/7 because it would be

4/35x=16/245

which would be 28x=16

simplified it would be 4/7
5 0
3 years ago
Other questions:
  • Explain how you can rename 5,400 as hundreds.
    9·2 answers
  • Flora’s car is 59/100 meters longer than Sally’s car.Sally’s car is 2/10 of a meter longer then Trevor’s car.how many longer is
    14·1 answer
  • A group of students conducted several trials of an experiment to study Newton’s second law of motion. They concluded that tripli
    10·1 answer
  • (w+14)/(4w+6)=(3)/(4) show work plz
    13·1 answer
  • Find volume of cone z=sqrt(x^2+y^2) that is bounded with z=5 and z=7
    8·1 answer
  • Which is bigger, one fourth of 16 or one third of 24?
    12·2 answers
  • Factor the GCF:<br> 24x3 + 8x
    11·1 answer
  • 1. Consider the following word arrangements:
    13·1 answer
  • Lines and intersect at O. What is the measure of What do you Understand?<br> What is your Plan/Strategy?<br> Solve and Check you
    11·1 answer
  • Help with this please help
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!