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3 years ago

1. What is the simple interest on $4,500 for 2 and a half years at 4% per year?

Mathematics

2 answers:

Goryan [66]3 years ago

7 0

Answer:

1. $450

2. $4950

3. $48,000

4. $88,000

Step-by-step explanation:

I took a test and got these questions correct. I hope this helps!

allochka39001 [22]3 years ago

6 0

Answer: 1st is 180$ sorry if I’m wrong

Step-by-step explanation:

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Working together, machine J, machine K, and machine L can complete a job in 12 minutes. Working alone, machine J can complete a

blondinia [14]

Answer:

Total required time is 24 minutes.

Step-by-step explanation:

It is given that working together, machine J, machine K, and machine L can complete a job in 12 minutes.

Part of job completed by all machines together in one minute is

One minute work of all = $\frac{1}{12}$

Working alone, machine J can complete a job in 20 minutes.

Part of job completed by machine J in one minute = $\frac{1}{20}$

Part of job completed by machine K and L together in one minute is

One minute work of K and L together = $\frac{1}{12}-\frac{1}{20}=\frac{1}{30}$

It is given that Machine J worked alone for a given amount of time. Then, machines K and L worked together, and with no other machine, for the same amount of time.

Let the given amount of time be x.

$\frac{1}{20}x+\frac{1}{30}x=1$

$\frac{1}{12}x=1$

Multiply both sides by 12.

$x=12$

Total required time is

$2x=24$

Therefore total required time is 24 minutes.

3 0

3 years ago

to make punch Julia part 1 quart 3 cups of ginger ale into a bowl and then added twice as much fruit juice how much punch did sh

FrozenT [24]

First, find the amount of fruit juice, which is 2 quarts, 6 cups
Add together, and you get 3 quarts 9 cups, or 3 quarts 4 pints 1 cup, or 5 quarts, 1 cup, or 1 gallon 1 cup

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3 years ago

Minnie organizes data in a table to show the net change in the number of people subscribing and unsubscribing to her blog each m

olchik [2.2K]

The factored expression which represents the net change in the number of blog subscriptions over 10 months is :

3(11 - 7) + 4(-8)
Hence, the net change is -20

Change : -8, 11, -7, -7, -7, -8, -8, -8, 11, 11

To factor the values in the change variable :

-7 has a frequency of 3

-8 has a frequency of 4

11 has a frequency of 3

Values having the same frequency can be factored together :

Hence, we have ;

3(11 - 7) = 3(11 - 7) = 3(4) = 12 - - - - (1)

-8 having a value of 4 can be factored thus ; 4(-8) = -32 - - (2)

Joining both equations :

3(11-7) + 4(-8)

3(11 - 7) + 4(-8)

3(4) + 4(-8)

12 + (-32)

= - 20

Therefore, the factored expression for the net change in subscription is 3(11-7) + 4(-8)

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2 years ago

(x – 2)^2 + 20 = 0

seraphim [82]

Answer:

x = 2 ± 2 sqrt(5)i

Step-by-step explanation:

(x – 2)^2 + 20 = 0

Subtract 20 from each side

(x – 2)^2 + 20 -20=0 -20

(x – 2)^2 =- 20

Take the square root of each side

sqrt((x – 2)^2) =±sqrt(- 20)

x-2 = ±sqrt(- 20)

We know sqrt(ab) = sqrt(a) sqrt(b)

x-2 = ±sqrt(- 1) sqrt(20)

We know the sqrt (-1) = i

x-2 = ±i sqrt(4*5)

x-2 = ±i sqrt(4) sqrt(5)

Add 2 to each side

x-2+2 = 2 ±i sqrt(4) sqrt(5)

x = 2 ±i 2 sqrt(5)

x = 2 ± 2 sqrt(5)i

7 0

3 years ago

A math test has 40 questions. A student answers 85% of the questions correctly. How many questions did the student answer correc

Novosadov [1.4K]

Answer:

Step-by-step explanation:

40 * 0.85 = 34

34 questions answered correctly

6 0

2 years ago

Read 2 more answers