Ask question

Ask question

All categories

Nutka1998 [239]

4 years ago

6

In a survey, 250 out of 1000 people said that they preferred a particular brand of shampoo. What is the result of the survey in

percent?

2 answers:

ipn [44]4 years ago

8 0

25% said that they preferred a particular brand of shampoo, the rest is 75 %

ANTONII [103]4 years ago

6 0

25% because you divide the numerator and denominator by 10.

25% for one and 75% for the other.

You might be interested in

SOHCAHTOA can anyone help me with this

zvonat [6]

Root of ( 20^2 - 16^2 ) = 12

5 0

3 years ago

Bly makes fleece scarves and sells them for $11 each. The supplies cost her $5 per scarf. Last month, Bly had a profit of $139.

seraphim [82]

Bly sold 29 scarves last month

<em><u>Solution:</u></em>

Let "x" be the number of scarves sold

Bly made 7 more scarves than she sold

Then, number of scarves made = x + 7

Bly makes fleece scarves and sells them for $11 each

Thus for selling "x" scraves , he will get 11x dollars

Total sales revenue = 11x

number of scarves made = x + 7

The supplies cost her $5 per scarf

Therefore, cost for scarves made = 5(x + 7)

Therefore,

profit = Total sales revenue - cost for scarves made

profit = 11x - 5(x + 7)

profit = 11x - 5x - 35

profit = 6x - 35

Last month, Bly had a profit of $139

139 = 6x - 35

6x = 174

x = 29

Thus Bly sold 29 scarves last month

5 0

3 years ago

Can someone put true or false? Please make sure you answer is correct and label them like this:

uysha [10]

1. true.
2. false.
3. false.
4. true.

these should be correct.

4 0

3 years ago

It takes 0.250.25 cup of sugar to make a batch of chocolate chip cookies. I have 5.505.50 cups of sugar. How many batches of coo

RSB [31]

Answer:

a) 22 batches

c) 7.3 batches

Step-by-step explanation:

a) It takes 0.25 cup of sugar to make a batch of chocolate chip cookies. I have 5.50 cups of sugar. How many batches of cookies can I make?

0.25 cup = 1 batch

5.5 cup = x

Cross Multiply

0.25 cup × x = 5.5 cup × 1 batch

x = 5.5 cup × 1 batch/0.25 cup

x = 22

I can make 22 batches of chocolate chip cookies. You may use the scratchpad to show your work.

(b) Lemon Cookies It takes 0.75 cups of sugar to make a batch of lemon cookies. I have 5.5 cups of sugar. How many batches can I make?

0.75 cup = 1 batch

5.5 cup = x

Cross Multiply

0.75 cup × x = 5.5 cup × 1 batch

x = 5.5 cup × 1 batch/0.75 cup

x = 7.3 batches

I can make 7.3 batches of lemon cookies. You may use the scratchpad to show your work.

4 0

3 years ago

Let f(x) = e ^3x/5x − 2. Find f'(0).

Romashka-Z-Leto [24]

Answer:

Step-by-step explanation:

Our friend asking what the actual function is has a point. I completed this under the assumption that what we have is:

$f(x)=\frac{e^{3x}}{5x-2}$ and used the quotient rule to find the derivative, as follows:

$f'(x)=\frac{e^{3x}(5)-[(5x-2)(3e^{3x})]}{(5x-2)^2}$ and simplifying a bit:

$f'(x)=\frac{5e^{3x}-[15xe^{3x}-6e^{3x}]}{(5x-2)^2}$ and a bit more to:

$f'(x)=\frac{5e^{3x}-15xe^{3x}+6e^{3x}}{(5x-2)^2}$ and combining like terms:

$f'(x)=\frac{11e^{3x}-15xe^{3x}}{(5x-2)^2}$ and factor out the GFC in the numerator to get:

$f'(x)=\frac{e^{3x}(11-15x)}{(5x-2)^2}$ That's the derivative simplified. If we want f'(0), we sub in 0's for the x's in there and get the value of the derivative at x = 0:

$f'(0)=\frac{e^0(11-15(0))}{(5(0)-2)^2}$ which simplifies to

$f'(0)=\frac{11}{4}$ which translates to

The slope of the function is 11/4 at the point (0, -1/2)

4 0

3 years ago