The ratio between the number of red and green marbles in a box is 3:7. How many marbles are in the box if there are 20 fewer red marbles than green marbles?PLS HELP QUICK LIKE IN 1 SECOND!!
Answers
Answer:
50
Step-by-step explanation:
difference of ratio=7-3=4
sum of ratio=3+7=10
if difference 4 total=10
if difference 20 total=10/4×20=50
Related Questions
Please help, having some trouble!
Factor completely: 4d^3+3d^2-14d
2. In an industrial training program, students have been averaging about 64 points on a standardized test. The lecture system was replaced by teaching machines with a lab instructor. There was some doubt as to whether the scores would decrease, increase, or stay the same. A sample of n = 60 students using the teaching machines was tested, resulting in a mean of 68 and a standard deviation of 12. Perform a hypothesis test to see if scores would decrease, increase, or stay the same. Use α = 0.05. Be sure to:1. State your hypotheses. 2. Find the value of the Test Statistic. 3. Find the p-value 4. State your decision (Reject or not) 5. State your conclusion.
Choose the correct algebraic expression for each phrase 13 times the cost of one ticketPLS HELP IF U KNOW THE ANSWERt÷13t-1313+t13t
Answers
Answer:
Step-by-step explanation:
3 sqrt 60 / 3 sqrt 20
3 gets cancelled
(sqrt 20 × sqrt 3)/sqrt 20
sqrt 20 gets cancelled
Sqrt 3 is the answer
Answers
Answer:
0.1 foot
Step-by-step explanation:
1 inch = 0.083 foot
Formula: divide the length value by 12
So, multiply 0.083 to
1.2 × 0.83 = 0.996
approximatlry, 0.996 = 0.1
Therefore, inches are equal to 0.1 foot.
-Hours paid Saturday=
-Hours paid Sunday=
-Total Hours paid=
Answers
Answer:
Total Earned Saturday: $45
Total Earned Sunday: $63
Total: $108
Step-by-step explanation:
Time and a quarter means that you divide his normal rate by 4 and add that to his normal rate:
9/4 = 2.25 2.25 + 9 = 11.25
Jarvis makes $11.25 an hour on Saturdays. Since he worked 4 hours, you multiply 11.25 x 4 = 45.
Time and three quarters means that you multiply his normal rate by 3/4 and add that to his normal rate:
9x0.75 = 6.75 6.75 + 9 = 15.75
Jarvis makes $15.75 an hour on Sundays. Since he worked 4 hours, you multiply 15.75 x 4 = 63.
To get the total, you add his earnings on Saturday and earnings on Sunday:
45 + 63 = 108.
I hope this helped you. If it did, please feel free to rate and press thanks! Have a splendid day.
Answer:
72
Step-by-step explanation:
If he worked on saturday for four hours he got 36 dollars and worked the same time on sunday he 36+36=72 dollars
Answers
Answer:
4
Step-by-step explanation:
9 x 5=60
so following this 4 x 5=20
Answers
Yes because one input (number of pounds of banana) will always have the same output (cost).
Answer:
True. This isn't really a question but it is a statement
Step-by-step explanation:
1 pound 80 cents
2 pounds 1.60
3 pounds 2.40
and so on
Answers
Answer:
There are 13 families had a parakeet only
Step-by-step explanation:
* Lets explain the problem
- There are 180 families
- 67 families had a dog
- 52 families had a cat
- 22 families had a dog and a cat
- 70 had neither a cat nor a dog, and in addition did not have a
parakeet
- 4 had a cat, a dog, and a parakeet (4 is a part of 22 and 22 is a part
of 67 and 520
* We will explain the Venn-diagram
- A rectangle represent the total of the families
- Three intersected circles:
C represented the cat
D represented the dog
P represented the parakeet
- The common part of the three circle had 4 families
- The common part between the circle of the cat and the circle of the
dog only had 22 - 4 = 18 families
- The common part between the circle of the dog and the circle of the
parakeet only had a families
- The common part between the circle of the cat and the circle of the
parakeet only had b families
- The non-intersected part of the circle of the dog had 67 - 22 - a =
45 - a families
had dogs only
- The non-intersected part of the circle of the cat had 52 - 22 - b =
30 - b families
had cats only
- The non-intersected part of the circle of the parakeet had c families
had parakeets only
- The part out side the circles and inside the triangle has 70 families
- Look to the attached graph for more under stand
∵ The total of the families is 180
∴ The sum of all steps above is 180
∴ 45 - a + 18 + 4 + 30 - b + b + c + a + 70 = 180 ⇒ simplify
- (-a) will cancel (a) and (-b) will cancel (b)
∴ (45 + 18 + 4 + 30 + 70) + (-a + a) + (-b + b) + c = 180
∴ 167 + c = 180 ⇒ subtract 167 from both sides
∴ c = 180 - 167 = 13 families
* There are 13 families had a parakeet only