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
ExtremeBDS [4]
3 years ago
14

Kim has 120 cards in a box. She gave 6/10 of cards to Maddy. How many cards did Kim have left in the box?

Mathematics
1 answer:
yawa3891 [41]3 years ago
3 0
In order to find out the answer to this question,, you must multiply 120 by \frac{6}{10}
120 x \frac{6}{10}
Now that we have the expression,, we can start to solve. The first step to solve this problem is to reduce the numbers with 10
12 x 6
Then we multiply the numbers together to see how many cards Kim gave to Maddy.
72
Finally,, we need to subtract 72 from 120 to find out how many cards are left in the box.
120 - 72 = 45
This means that Kim has 45 cards left in the box.
Let me know if you have any further questions
:)
You might be interested in
Based on the housing data below, which equation can be used to calculate
Nuetrik [128]

Answer: y= 0.074x + 50.48

Step-by-step explanation:

6 0
3 years ago
Sam is loading a freight elevator with boxes that are 55 pounds each. If the freight elevator can safely hold up to 3000 lbs, ho
bixtya [17]

Answer:

54

Step-by-step explanation:

\frac{3000}{55} \\  = 54.5454...

Therefore, Sam can put 54 boxes.

8 0
3 years ago
At a certain coffee shop, all the customers buy a cup of coffee; some also buy a doughnut. The shop owner believes that the numb
Zinaida [17]

Answer:

a) 0.2514

b) No

c) 0.2611

Step-by-step explanation:

For coffee cups sold daily

Mean(μ) = 320 cups

Standard deviation (σ) = 20 cups

For doughnut sold daily

Mean(μ) = 150 doughnut

Standard deviation (σ) = 12 doughnut

Let X be the random variable representing the number of cups.

Let y be the random variable representing the number of doughnuts.

a) The shop is opened everyday except Sunday's. This means that the shop is opened 6 times in a week.

The probability that he will sell more 2000 cups of coffee in a week = Pr(x>2000)

Using normal distribution

Z = (x - μ)/σ

Z = (2000 - 6(320))/6(20)

Z = (2000 - 1920) / 120

Z = 80/120

Z = 0.67

From the normal distribution table, 0.67 = 0.2486

Φ(z) = 0.2486

Recall that if Z is positive,

Pr(x>a) = 0.5 - Φ(z)

Pr(x>2000) = 0.5 - 0.2486

= 0.2514

b) On each cup of coffee, he makes a profit of 50 cents and makes a profit of 40 cents on each doughnut. We have 0.5x + 0.4y

Z = (x - μ) / σ

Z = (300 - (0.5*320 + 0.4*150)) / √0.5^2*20^2 + 0.4^2*12^2

Z = (300 - (160+60)) / √100+23.04

Z = (300 -220)/√123.04

Z = 80/11.09

= 7.02

Since 300 is more than 7 standard deviation from the mean and the value of z cannot be found in the normal distribution table, then he has NO reasonable chance to earn a profit more than 300.

c) The probability that on any given day he will sell a doughnut to more than half of his coffee customers = Pr(y - 0.5x > 0)

From normal distribution,

Z = (x - μ) / σ

Z = (0 - (150 - 0.5*320)) / √12^2 + 0.5^2*20^2

Z = (0 - (150 - 160)) / √144 + 100

Z = (0 -(-10))/√244

Z = 10/15.62

= 0.64

From the normal distribution table, 0.64 = 0.2389

Φ(z) = 0.2389

Recall that if Z is positive,

Pr(x>a) = 0.5 - Φ(z)

Pr(y - 0.5x >0) = 0.5 - 0.2389

= 0.2611

6 0
3 years ago
What is the slope of the line that passes through the points (0, -15) and (-16, -20)?​
iren [92.7K]
64718647$746363782866;766)3637847,7$4737747sry
3 0
3 years ago
Read 2 more answers
Hey! I need help giving brainliest to correct answer plz try.
DanielleElmas [232]

Answer:

5/10

Step-by-step explanation:

hope this helped

8 0
3 years ago
Read 2 more answers
Other questions:
  • Find the value of the greater root of x^2-6x+5=0
    6·1 answer
  • Mark wants to improve his free throw percentage in basketball He has shot 1,250 free throws over the last 20 days. He shot eithe
    7·1 answer
  • Factor completely 5x2 − 40. 5(x 8)(x − 8) 5(x2 − 8) 5(x 8)(x − 5) prime
    11·2 answers
  • What is fraction form for 47/100
    12·2 answers
  • from a window 20 feet above the ground, the angle of elevation to the top of another building is 35 degrees. The distance betwee
    10·1 answer
  • Giving brainly help find Find m∠H.
    12·1 answer
  • The two binomials (3x - 4) and (2x - 3) are the factors of which polynomial?
    11·1 answer
  • May I please receive help?
    14·2 answers
  • HELP I WILL GIVE BRAINIEST
    7·1 answer
  • An investor has an account with stock from two different companies. Last year, his stock in Company A was worth $5900 and his st
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!