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
timama [110]
3 years ago
13

kate has a coin collection she keeps 7 of the coins in a box which is only 5% of her entire collection what is the total number

of coins in kates coin collection
Mathematics
1 answer:
SCORPION-xisa [38]3 years ago
7 0

Answer:

140

Step-by-step explanation:

so where trying to find the unknown total of coins so where gonna call that x

then we will make an equation 5% * x= 7

then to make it easier to solve we will convert 5% to a decimal   .05

and finally to find the answer we will divide both sides by .05

this gives us x= 140 which is the answer

You might be interested in
Solve. for. c m=c-s
podryga [215]

Answer:

s-c= m  c

Step-by-step explanation:

8 0
2 years ago
Write this number in expanded form.4,508,227
Semmy [17]
4000000+500000+8000+200+20+7
7 0
3 years ago
Read 2 more answers
An air transport association surveys business travelers to develop quality ratings for transatlantic gateway airports. The maxim
Flura [38]

Answer:

The 95% confidence interval estimate of the population mean rating for Miami is (6.0, 7.5).

Step-by-step explanation:

The (1 - <em>α</em>)% confidence interval for the population mean, when the population standard deviation is not provided is:

CI=\bar x \pm t_{\alpha/2, (n-1)}\cdot \frac{s}{\sqrt{n}}

The sample selected is of size, <em>n</em> = 50.

The critical value of <em>t</em> for 95% confidence level and (<em>n</em> - 1) = 49 degrees of freedom is:

t_{\alpha/2, (n-1)}=t_{0.05/2, 49}\approx t_{0.025, 60}=2.000

*Use a <em>t</em>-table.

Compute the sample mean and sample standard deviation as follows:

\bar x=\frac{1}{n}\sum X=\frac{1}{50}\times [1+5+6+...+10]=6.76\\\\s=\sqrt{\frac{1}{n-1}\sum (x-\bar x)^{2}}=\sqrt{\frac{1}{49}\times 31.12}=2.552

Compute the 95% confidence interval estimate of the population mean rating for Miami as follows:

CI=\bar x \pm t_{\alpha/2, (n-1)}\cdot \frac{s}{\sqrt{n}}

     =6.76\pm 2.000\times \frac{2.552}{\sqrt{50}}\\\\=6.76\pm 0.722\\\\=(6.038, 7.482)\\\\\approx (6.0, 7.5)

Thus, the 95% confidence interval estimate of the population mean rating for Miami is (6.0, 7.5).

7 0
3 years ago
HOW DO I SOLVE THIS PROBLEM AND WHAT IS THE ANSWER PLZZZZZZZZZZ HELP ME I NEED YOU HELP I WILL GIVE YOU HALF OF MY POINTS IF YOU
makvit [3.9K]
The answer would be 54% out of 100
4 0
3 years ago
Solve the simultaneous equation<br> 4x-y=9 <br> 2x-3y= -23
MrMuchimi

Answer:

x = 5

y = 11

Step-by-step explanation:

y = 4x - 9

2x -3(4x - 9) = -23

2x - 12x + 27 = -23

-10x = -23 -27

-10x = -50

minus cancels out

x = 5

y = 4(5) -9

y = 20 - 9

y = 11

4 0
3 years ago
Other questions:
  • I need some help, with my algebra ​
    9·2 answers
  • Rewrite the expression using grouping symbols 13x - 29x
    8·1 answer
  • Four friends went fishing and each caught one fish. The fish they caught weighed 1 3/8 lb, 1 5/16 lb, 1 7/10 lb, and 1 3/5 lb. W
    11·2 answers
  • What is the probability of drawing a king and a 7 from a deck of cards without replacement?
    14·1 answer
  • What is the equivalent of pie divided by 3 radians in degrees
    6·2 answers
  • PLEASE HELP QUICKLY
    5·2 answers
  • Working at home: According to the U.S Census Bureau, 34% of men who worked at home were college graduates. In a sample of 500 wo
    10·1 answer
  • Factor 3x^4+5x^3-11x^2+3x
    6·1 answer
  • There are 10 computers and 5 students. How many ways are there for the students to sit at the computers if no computer has more
    15·1 answer
  • !!!20 POINTS AND BRAINLIEST!!!PLEASE HELP!!!
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!