9 is 60% of what number?

Answers

Answer 1

Answer: Lets say 9 is 60% of x
so 9/x= 60/100 or x= 100*9/60=15
so 9 is 60% of 15.
Hope I helped!:-)

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The sum of three consecutive even numbers is 450. What is the 3rd number?
Solve for r: zrw = f
If the hypotenuse of a right triangle is 20 cm and one of the legs is 16 cm, how long is the other leg? 2.81224144

2. The restaurant bill you and your friend received was not itemized. You ordered 2 drink refills and the egg breakfast, for a total of $8.40. Your friend ordered 3 refills and the egg breakfast for $9.35. (a) Write a system of equations for the situation. Use r for the amount charged for a refill and b for the amount charged for the egg breakfast.
(b) Graph the equations in the system.
(c) Use your graph to estimate how much each item cost.

Answers

( a ) The system of equations:
2 r + b = 8.40
3 r + b = 9.35
( b ) Graph is in the attachment.
( c ) Each item costs:
b = $6.50, r = $0.95
We can prove it: 2 * 0.95 + 6.50 = 8.40
3* 0.95 + 6.50 = 9.35

Answer: 1 drink refill is $0.95 and the egg breakfast is $6.50

2 r + b = 8.40

3 r + b = 9.35

$9.35-$8.40 =$0.95 then take .95x2 to get 1.90 and 8.40-1.90 to get the egg breakfast or $6.50

Last year 7/16 of all students at a school participated in the science fair. About what percentage of the students participated?

Answers

Answer:

43.75% students were participated last year.

Step-by-step explanation:

We have been given that last year 7/16 of all students at a school participated in the science fair.

Let us suppose the total number of students were x. Then, number of students participated last year is given by

$(7)/(16) x$

Hence, the percentage of the students participated last year is given by

$\%=((7)/(16)x )/(x) * 100\n\n\%=(7)/(16)* 100\n\n\%=43.75\%$

Therefore, 43.75% students were participated last year.

7/16*100=43.75% Can be rounded to 44

A cylindrical water bottle with a height of 20 cm and diameter of 5.5 cm is filled with water until it is full. Vincent wants to transfer the water in the bottle into a cubic container. State the minimum length of a side of the cube. Can anyone help to explain this question for me?

Answers

Step-by-step explanation:

the volume of a cylinder is

ground area × height

the ground area is a circle, and the area of a circle is

pi×r²

with r being the radius, which is always half of the diameter.

so, in our case

r = 5.5/2 = 2.75 cm

height = 20 cm

so, the volume of the cylinder is

pi×2.75² × 20 = pi×7.5625×20 = 475.1658889... cm³

the volume of a cube is

(side length)³

and the side length of a cube is therefore the cubic root of the volume.

now the volume of the cube has to be at least a large as the volume of the cylinder to be able to contain all the water from the cylinder.

so, the side length has to be at least the cubic root of that volume (475.1658889... cm³).

which is 7.803361957... cm.

In a change jar, Tom has nickels and dimes. The number of nickels is two times the number of dimes and the total amount of money in the jar is $1.20. How many dimes are in the jar?

Answers

6 Dimes because if you have 6 dimes that is .60 cents then add 12 nickels that is another .60 cents so then its $1.20 :)

Answer:

40 dimes

Step-by-step explanation:

The cost of a student ticket to the school play is $7.Write an equation that correctly relates to the total cost for a particular number,of student tickets purchased.Identify the independent and dependent variable.P.S: There is no answer choices this question is where you have to explain how you got the answer.

Answers

7*X(number of students)=y(total cost) The independent variable is the number of students and the dependent variable is the cost in dollars. I hope I helped!

What is square root of 80 in simplified radical form?A.8 square root over 10

B.10 square root over 8

C.5 square root over 4

D.4 square root over 5

Answers

The number √80 in simplified radical form is 4√5. Therefore, the correct answer is option D.

The given number is √80.

Radical form is the expression that involves radical signs such as square root, cube root, etc instead of using exponents to describe the same entity.

Here, factors of number 80 are 2×2×2×2×5

= √16×5

= 4√5

Therefore, the correct answer is option D.

Learn more about the radical form here:

brainly.com/question/27272065.

#SPJ6

square root 80 = 4 x square root 5
because root 80 = root 16 x root 5

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