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2 years ago

What is the percent of change from 90 to 18???

Mathematics

2 answers:

Kazeer [188]2 years ago

3 0

Answer:

5% decrease

Step-by-step explanation:

sdas [7]2 years ago

3 0

The percentage is 90 divided by 18 which gives you 7 so that you mulitple 7 x 18 = 179

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Please help NOW!!!! 20 Points!<br><br> how is this number expressed in decimal notation? 2 x 10-5

Sonbull [250]

1.5 × 10 to the 1 st power

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3 years ago

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Carrie is finding the set of even numbers within the set of prime numbers. She starts by considering only positive numbers. Of t

MArishka [77]

Answer:

Option 3 is correct that is prime numbers.

Step-by-step explanation:

Even numbers are those which are divisible by 2

Prime numbers are the numbers which are divisible by 1 and the number itself

Since, we have to take only positive numbers

Carrie has taken out the set of even number within the set of prime number

So, 2 is the only number inside this eset because 2 is even as well as prime

Hence,universal set will be prime numbers

Therefore, Option 3 is correct that is prime numbers.

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3 years ago

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sattari [20]

Answer:7/4 - 7/8 = 14/8 - 7/8 = 7/8 for lettuce

Step-by-step explanation:1/4 + 5/8 = 2/8 + 5/8 = 7/8

= amount used for pepper and tomatoes

2 1/2 - 3/4 = 5/2-3/4 = 10/4 -3/4 = 7/4

= total amount used

7/4 - 7/8 = 14/8 - 7/8 = 7/8 for lettuce

6 0

2 years ago

Read 2 more answers

Two cats start from opposite ends of an 8 mile road, driving towards eachother. One car is driving at a rate of 4mph and the oth

Inga [223]

Answer:

The cars will meet each other after 0.8 hour [48 minutes]

Step-by-step explanation:

* <em>Lets explain how to solve the problem</em>

- The two cars start from opposite ends of a 8 mile rode

# The distance between them is 8 miles

- The two cars driving towards each other

# the time for both same

- One car is driving at a rate of 4 mph

# The rate of the car is 4 miles per hour

- Other car is driving at a rate of 6 mph

# The rate of the car is 6 miles per hour

- We need to know they will meet each other after what time

- They move towards each other and meet each other after t hour

and the total distance d is the sum of the two car's distances

$d_{1}$ and $d_{2}$ ,this total distance is 8 miles

∴ d = $d_{1}$ + $d_{2}$

∵ d = 8

∴ $d_{1}$ + $d_{2}$

- Distance = rate × time

∵ The rate of one care is 4 mph

∵ The rate of the other car is 6 mph

∵ The time for both cars is t

∴ $d_{1}=4t$ and $d_{2}=6t$

- Substitute these values in the equation above

∴ 4t + 6t = 8

∴ 10t = 8

- Divide both sides by 8

∴ t = 0.8

∴ The cars will meet each other after 0.8 hour [48 minutes]

6 0

3 years ago

Beth bought 20 tickets to a movie, where adult tickets cost $8.00 and senior citizen tickets cost $4.00. She spent a total of $1

olchik [2.2K]

Answer:

The Total number of adults ticket's is 15

The Total number of Senior citizen ticket's is 5

Step-by-step explanation:

Given as :

The total number of movies tickets were bought = 20

The cost of adults tickets = $ 8.00

The cost of senior citizen tickets = $ 4.00

The total money spent on movie tickets = $ 140

Let The total number of adults tickets = A

And The total number of senior citizen tickets = S

Now, According to question

The total number of movies tickets were bought = 20

I.e The total number of adults tickets + The total number of senior citizen tickets = 20

Or, A + S = 20

And $ 8 A + $ 4 S = $ 140 .........1

I.e 8 × ( A + S ) = 8 × 20

Or, 8 A + 8 S = 160 .......2

Solving the equation 1 and 2

Or, ( 8 A + 8 S ) - ( 8 A + 4 S ) = 160 - 140

Or, ( 8 A - 8 A ) + ( 8 S - 4 S ) = 20

or, 0 + 4 S = 20

∴ S = $\frac{20}{4}$

I.e S = 5

So, The number of Senior citizen ticket's = 5

Put The value of S in eq 1

So, 8 A + 4 × 5 = 140

Or, 8 A = 140 - 20

Or, 8 A = 120

∴ A = $\frac{120}{8}$

I.e A = 15

So, The number of adult's tickets = 15

Hence The Total number of adults ticket's is 15

And The Total number of Senior citizen ticket's is 5 Answer

8 0

2 years ago