3. What is 5⅕% of 325?

Furmenticia pp no lol

aleksandrvk [35]

........hUh?.........

3 0

2 years ago

A person purchased 5k + 2 items for a total cost of 35k 2 + 29k + 6. Find the average cost per item of this purchase.

olchik [2.2K]

Answer:

$\boxed{7k + 3}$

Step-by-step explanation:

Average cost = total cost/number of items = (35k² + 29k + 6)/(5k + 2)

Perhaps the best way to solve this problem is to use long division.

7k + 3

5k + 2)35k² + 29k + 6

35k² + 14k

15k + 6

15k + 6

0

Thus,

$\frac{35k^{2}+29k+ 6}{5k + 2} = 7k+3$

The average cost per item is $\boxed{7k+3}$ .

7 0

3 years ago

To decrease an amount by 8 percent, what single multiplier would you use?

Alchen [17]

That's far more problems than I usually accept in a single question, but since you're new and obviously a beginner, I'll try to help.

To Increase an amount by 7% what single multiplier would you use 
We want 7% more than 100% of the amount, so the multiplier is 
(100% + 7%) = 107% = 1.07 
[Remember that "percent" means "per hundred," so we divide a percentage by 100 to get the numerical equivalent.] 

To Decrease an amount by 7% what single multiplier would you use 
We want 7% less than 100% this time, so the multiplier is 
(100% - 7%) = 93% = 0.93 

5 ÷ 0.1 
= 50 

(To One Decimal Place) (0.3 x 2.8)Squared 
[Notation: around here we usually write "squared" as ^2, where the ^ is an exponentiation sign.] 
(0.3 x 2.8)^2 = 0.84^2 = 0.7056 
which is 0.7 when rounded to one decimal place. 

6.38 + 4.52 ÷ 4.71 +9.53 
= 6.38 + (4.52 ÷ 4.71) + 9.53 [assuming operations in the usual order] 
= about 6.38 + 0.96 + 9.53 
= 16.87 

Expand and Simplify 
(x + 2)(x + 3) 
= x^2 + 2x + 3x + 6 
= x^2 + 5x + 6 

Expand and Simplify 
(x + 2)(x - 3) 
= x^2 + 2x - 3x - 6 
= x^2 - x - 6 

x + 1 < 5 
x < 4 [subtracting 1 from both sides] 

Make n the subject of the formula.... M=3n 
3n = M 
n = M/3

5 0

2 years ago

I need help..Please make it correct..

STatiana [176]

Answer:

11/13

Step-by-step explanation:

3/13, 5/13, 7/13, 9/13, 11/13

3/13

3/13 + 2/13 = 5/13

5/13 + 2/13 = 7/13

7/13 + 2/13 = 9/13

9/13 + 2/13 = 11/13

4 0

2 years ago

Ben, Tim, and Sam have to do a certain job. Ben can finish the job in 5 hours. Tim can finish the job in 6 hours. Sam can finish

Brut [27]

x is 7.5 hours

Step-by-step explanation:

Ben, Tim, and Sam have to do a certain job

Ben can finish the job in 5 hours
Tim can finish the job in 6 hours
Sam can finish the job in x hours
The three of them can finish the job in 2 hours if they work together

We need to find x

∵ Ben can finish the job in 5 hours

∴ The rate of Ben = $\frac{1}{5}$

∵ Tim can finish the job in 6 hours

∴ The rate of Tim = $\frac{1}{6}$

∵ Sam can finish the job in x hours

∴ The rate of Sam = $\frac{1}{x}$

They will working together to finish the job in two hours, that means the sum of their rate is equal to 1/2

∵ They can finish the job in 2 hours if they work together

∴ $\frac{1}{5}+\frac{1}{6}+\frac{1}{x}=\frac{1}{2}$

To add the fractions find the LCM for all denominators to make all fractions with same denominators

∵ The LCM of 5, 6 ans x is (5 × 6 × x) = 30 x,

- Divide it by each denominator to find the new numerators

∵ 30 x ÷ 5 = 6 x , 30 x ÷ 6 = 5 x , 30 x ÷ x = 30

- Change all the denominators to 30 x and then write the new

numerators of each fraction

∴ $\frac{6x}{30x}+\frac{5x}{30x}+\frac{30}{30x}=\frac{1}{2}$

Add the numerators and put the sum over 30 x

∵ $\frac{11x+30}{30x}=\frac{1}{2}$

- By using cross multiplication

∴ 2(11 x + 30) = 1(30 x)

- Simplify the both sides

∴ 22 x + 60 = 30 x

- Subtract 22 x from both sides

∴ 60 = 8 x

- Divide both sides by 8

∴ 7.5 = x

∴ The value of x is 7.5 hours

x is 7.5 hours

Learn more:

You can learn more about the word problems in brainly.com/question/10712420

#LearnwithBrainly

5 0

3 years ago