Mathematics High School

a
Lucy has a coin collection. She keeps 3 of the coins in her box, which is 25% of the
collection. How many total coins are in her collection?
Multiply/scale up to solve.
coins
3
25
100
percent

Answers

Answer 1

Answer:

3x4=12

12 coins in her collection

Step-by-step explanation:

25x4=100%

Related Questions

Jane needs to make a four-letter password. If the first letter has to be a vowel, how many possibilities are there to choose from where y is not a vowel

Answers

The vowels are A,E,I,O,U so 5 because if you add them together it’s 5

The number of possibilities for Jane for making the four letter password (either upper case or lower case) with first letter being a vowel is 1406080

What is the rule of product in combinatorics?

If a work A can be done in p ways, and another work B can be done in q ways, then both A and B can be done in [tex]p \times q[/tex] ways.

Remember that this count doesn't differentiate between order of doing A first or B first then doing other work after the first work.

Thus, doing A then B is considered same as doing B then A

We need to find the number of ways a four letter password can be made The first letter is fixed to be a vowel.

There are 10 vowels (5 of lowercase and 5 of upper case).

Thus, 10 ways of choosing the first letter.

Second letter can be any of the 52 letters(26 of lowercase and 26 of uppercase).

Similarly, third and fourth letter can be any of the 52 letters.

Thus, using the product rule, the number of ways of making the four letter password is:

[tex]N = 10 \times 52 \times 52 \times 52 = 1406080[/tex]

(the answer can be different if we consider only either lowercase letters or only upper case letters. In those cases, there would be [tex]5 \times 26^3 = 87880[/tex] ways to make such passwords).

We used product rule, since we wanted to do the choosing of all the four letters for password, and we knew the number of ways each of them can be done individually.

Thus,  the number of possibilities for Jane for making the four letter password (either upper case or lower case) with first letter being a vowel is 1406080

Learn more about rule of product combinations here:

https://brainly.com/question/2763785

Sam and Andre shared a number of pennies in the ratio 8:3. They received a total of 671 pennies. How many more pennies did Sam receive than Andre?

Answers

Answer:

Sam had 488

Andre had 183

488:183

please mark brainllest

what is the improper fraction 2 7/8what is the improper fraction 8 2/3

Answers

Answer:

1. 23/8

2.26/3

Step-by-step explanation:

Kelly has 15 blue bracelets and 12 green bracelets. What is the ratio of Kelly’s blue bracelets to green bracelets?

Answers

Answer:

5:4

Step-by-step explanation:

Answer:

5:4

Step-by-step explanation:

To simplify the ratio 15:12, we find the greatest common divisor of 15 and 12, and then we divide 15 and 12 by the greatest common divisor.

The greatest common divisor that you can use to simplify 15:12 is 3. Which means the answer to ratio 15:12 simplified is:

5:4

Megan spent half of her paycheck on an iPad. Over the weekend she earned $12 from babysitting. If she has $514.50 now. Write and equation and solve to find out how much was her paycheck

Answers

A: $1,005
Explanation:
514.50 = -12 + 502.50(2)
She had twice as much money before buying the iPad. 514.5 - 12 = 502.5
502.5 is half of her paycheck, so multiply by 2.

another mathh question

Answers

where is the Question!!!

can you plz give me brainliest I really need it

Your question is incomplete.

Please if you need help I will try to help you :)

Have a Good Day.

How do I answer this question?

Answers

Yan po correct me if im wrong po.. Salamat po...

find the slope of the line through these pair of points. (17, –6), (–11, 7)​

Answers

☆Answer : (X1, Y1) = (17, -6) (X2, Y2) = (-11, 7)

m = (Y2 - Y1)/(X2 - X1)

m = (7 - (-6))/(-11 - 17)

m = (7 + 6)/(-28)

m = 13/(-28) = -(13/28)

I need help please

Which value is the closest to
0.9 • 997

a. 1,000
b. 81
c. 10,000
d. 10

Answer with supporting work:

Answers

It is A. 1000

Explanation: 0.9 x 997 equals to 897.3
897.3 rounds to 900 which is close to 1000 so it is that

Find the set of values for which 5/x > 15

Answers

Answer:

0 < x < 1/3

Step-by-step explanation:

Hello! The answer I provided is correct, you know this because any value you can use for X that is in between 0 and 1/3 would make the inequality true.

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!4

Answers

Answer:

C

Step-by-step explanation:

The line would be dotted since it's > not ≥. You would shade above the line since it's greater than, not less than.

You don't need to graph the line to choose the correct answer, but if you would like to:

y - 3 > 2x + 2

y > 2x + 5

Plzzzzzz help one more time​

Answers

D
Non linear means not a straight line

a square has a shaded part with 7cm and 4cm and 40 cm. workout the percentage of the are inside the square that is shaded

Answers

Answer:

68

Step-by-step explanation:

You multipliy 7x4 and you get 28 now you add the 40+28=68.

A line includes the points (7, –7) and (11, –3). What is its equation in slope-intercept form?

Answers

The slope intercept form is y = mx + b so the slope is m and the slope in this case is -2.5. Now we substitute that in the equation. Well use the first set of ordered pairs for x and y. So now we have: -7 = -2.5(7) + b. When you solve for this you should get: -7 = -17.5 + b. Now you solve for the last part and you get: -7 = -17.5 + 10.5. So the Answer is: y = -2.5x + 10.5

how do I solve this linear inequality?
5x - 7 > 4x + 8

Answers

Step-by-step explanation:

just like an equation.

5x - 7 > 4x + 8 | -4x + 7

x > 15

and that is your result.

in contrast to an equation, an inequality delivers a range as result and not a single point.

Answer:

[tex]\huge\boxed{\sf x > 15}[/tex]

Step-by-step explanation:

5x - 7 > 4x + 8

Subtract 4x to both sides, and Add 7 to both sides

5x - 4x > 8 + 7

x > 15

[tex]\rule[225]{225}{2}[/tex]

Hope this helped!

~AH1807

To determine the number of trout in a lake, a conservationist catches 149 trout,
tags them and throws them back into the lake. Later, 36 trout are caught; 12 of
them are tagged. How many trout would the conservationist expect to be in the
lake?

Answers

Answer:161

Step-by-step explanation:


I need help asap!!!!
What is the slope of the line on the graph below?
2 IV
-2 -1
1
2
3
4
5
6.
7
8
х
-2
4
45
-6
-7
48
1

Answers

Answer:

Slope is 1/3

Step-by-step explanation:

This is because the line is positive (moving upwards), and it moves up 1 unit and to the right 3 units. That means if you write it in the form of rise/run, where rise is the up or down movement and run is the left or right movement, 1 will be on top and 3 will be at the bottom.

Bonus: The line is y = 1/3x -5 (where 1/3 is slope and -5 is the y-intercept).

Hope this helps :)

Find the length of the diagonal in rectangle using image 3353

Answers

Answer:

65

Step-by-step explanation:

c=a2+b2=332+562=65

this is due in less the 30 minutes and this is my last question on the assignment please help and show work. will give brainliest

Answers

Answer:

22,100

Step-by-step explanation:

Answer:

the answer in 18,300

Step-by-step explanation:

2 x 3 5/8= 7 1/4

7 1/4 +1 9/10= 9 3/20

9 3/20 / 2= 18 3/10

18 3/10 x 1000=18,300

HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP

Answers

4 3/4 I think you have to add then together. The you get four 3/4

What is the probability that out of 125 babies born, at least 50 will be girls?
Assume that boys and girls are equally probable, and round your answer to the nearest tenth of a percent.
A. 70.4%
B. 99.0%
C. 10.5%
D. 51.2%

Answers

You're answer would be 99.0%.

PLEASE HELP!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

I think it's c

Step-by-step explanation:

because that looks like a good answer.

seven million five hundred and forty-two eight hundred in number form pls

Answers

Answer:

7,542,800

Step-by-step explanation:

Find the equation of a line parallel to y = -5x – 10 that passes through the point
(-5,0).

Answers

Answer:

8684787

Step-by-step explanation:

Find an
angle in each quadrant with a common reference angle with 280°, from
0°

Answers

Answer:

Step-by-step explanation:180

Answer:

80

Step-by-step explanation:

i don't know if it is right

Still won his election by a margin of 7 to 2 his opponent had 3492 votes how many votes did Steve have
Help ASAP

Answers

Answer:

12,222 votes

Step-by-step explanation:

7 x 3492= 24,444

24,444/2= 12,222

Steve has 12,222 votes.

The chances that you will be ticketed for illegal parking on campus are about 1/3. During the last nine days, you have illegally parked every day and have NOT been ticketed (you lucky person!). Today, on the 10th day, you again decide to park illegally. The chances that you will be caught are:

Answers

2/3*9=6
6/10=3/5
3/5 chance to be caught

The required probability of getting caught on the 10th day is 3/5.

What is probability?

Probability can be defined as the ratio of favorable outcomes to the total number of events.

Here,
Probability of getting caught in 9 days
= [1 - 1/3]*9=6

The probability of getting on the tenth day is given as,

= 6/10
=3/5

Thus, the required probability of getting caught on the 10th day is 3/5.

Learn more about probability here:

brainly.com/question/14290572

#SPJ5

4,00
.
5. Mr. Brown has $410,000 in a retirement account that earns 3.85% interest each year. Find the
amount earned each year by his investment.

Answers

Answer:

9 dollars

Step-by-step explanation:

cuz 9 dollars

helppppppp pleaseeeee


if somebody can answer this I'll really really appreciate it

Answers

Answer:

What is the question?

Step-by-step explanation:

Can you please answer this world problem? And please don't mind the numbers on top.

Answers

Answer: 5 1/15 feet

Step-by-step explanation:

For this you have to add fractions.

First find a common denominator between the factions which can be will turn into 15.

The fraction is now: 1 10/15 + 3 6/15

Now that the denominator is the same add the fractions.

1 10/15 + 3 6/15 = 5 1/15

Make the answer negative since its under sea level

Answer = -5 1/15 feet

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