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nika2105 [10]
3 years ago
11

Sarah earns $20 a day working after school. She spent 30% of her daily earnings on

Mathematics
2 answers:
Anarel [89]3 years ago
6 0

Answer:

6 Dallas

Step-by-step explanation:

30 percent of 20$ is 6$

30 percent *20 =

( 30:100)*20 =

( 30*20):100 =

600:100 = 6

Bogdan [553]3 years ago
6 0
The other answer is correct I checked
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On Sunday a library checked out 52books .if 24 of the books were fiction what is the ratio of non fiction books to fiction books
lana66690 [7]

Answer:

Ratio of Non Fiction : Fiction books = 7 : 6

Step-by-step explanation:

Total number of books checked out =  52

Number of fiction books checked out = 24

So, number of non fiction books =  Total books -  number of fiction books

Or, number of non fiction = 52 - 24   =  28  books

Now, ratio of Non Fiction : Fiction books = 28 : 24

Solving the ratio term in its lowest form, we get

The Ratio of Non Fiction : Fiction books = 7  : 6  

7 0
3 years ago
Please help with 11c!?
Contact [7]

Answer:

"To the nearest year, it would be about 9 years"

Step-by-step explanation:

11c)

This is compound growth problem. It goes by the formula:

F=P(1+r)^t

Where

F is the future amount

P is the present (initial) amount

r is the rate of growth, in decimal

t is the time in years

Given,

P = 20,000

r = 8% = 8/100 = 0.08

F = double of initial amount = 2 * 20,000 = 40,000

We need to find t:

F=P(1+r)^t\\40,000=20,000(1+0.08)^t\\2=(1.08)^t

To solve exponentials, we can take Natural Log (Ln) of both sides:

2=(1.08)^t\\Ln(2)=Ln((1.08)^t)

Using the rule shown below we can simplify and solve:

Ln(a^b)=bLn(a)

We can write:

Ln(2)=Ln((1.08)^t)\\Ln(2)=tLn(1.08)\\t=\frac{Ln(2)}{Ln(1.08)}\\t=9.0064

To the nearest year, that would be about 9 years

5 0
3 years ago
A total of 50 juniors and seniors were given a mathematics test. The 35 juniors attained an average score of 80 while the 15 sen
Alik [6]

Answer:

77

Step-by-step explanation:

Firstly, we need to calculate the total score of the junior students and the total score of the senior students.

The total score of the junior students is 35 * 80 = 2,800

The total score of the senior students is 15 * 70 = 1050

The total score is thus 2,800 + 1,050 = 3,850

The average score of the 50 students is thus 3,850/50 which equals 77

8 0
3 years ago
if julie ran 3.6 miles from home to the gym and then walked 0.7 miles to the store she then ran from the store home if her total
o-na [289]
So,

Home ---- gym = 3.6 mi.
gym   ---- store = .7 mi.
store ----- home = x

3.6 + .7 + x = 7.2 mi.

Collect Like Terms

4.3 + x = 7.2

Subtract 4.3 from both sides
x = 2.9

The distance from the store to her home is 2.9 miles.
4 0
3 years ago
Identify the domain and range of the following relation. {(7,-2), (7,4), (7,6), (7,-4), (7,1)}
ludmilkaskok [199]

Answer:

B.

Step-by-step explanation:

Domain is the x-coordinate and the range is the y-coordinate.

B. Domain: {7}

Range: {-4, -2, 1, 4, 6}

6 0
2 years ago
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