Lee had a total of 40 e-mails on Monday. Twelve of the e-mails were from her friend Cara. What percent of the e-mails were from Cara?

Answers

Answer 1

Answer: ❅ We can look at this question as what is 12% of 40.
❅ Lets lookat it like this: Y is 12% of 40
❅ We are going to do y=12%*40

❅ Now convert the answer you get into a decimal.
❅ 12%/100 = 0.12
❅ Now once again, solve: 0.12 * 40
❅ and then you get 4.8
❅4.8 is 12% of 40.
Now to get the number of percent
Divide: 12/40=.3

And you get: .3=30%
So Carla was 30% of her emails.
And 4.8 is 12% of 40.
❅Hope this helps!❅

Answer 2

Answer: To find the percentage we divide the number of emails from Cara by the total number of emails.

12/40=.3

.3=30%

30% of the emails were from Cara

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Please answer fast!!! Which of the following sets represents the range of the function shown?
{(-3, 4), (5, 11), (9, -1), (10, 13)}

{-3, 5, 9, 10)
{-1, 4, 11, 13}
{(4, -3), (11, 5), (-1,9), (13, 10)}
{-3,-1, 4, 5, 9, 10, 11, 13}

Answers

Answer:

{-3,-1, 4, 5, 9, 10, 11, 13}

Step-by-step explanation:

Calculate the distance between the points A= (3, -9) and C= (8, -4) in the coordinate plane round your answer to the nearest hundredth

Answers

Answer:

(6,12)

Step-by-step explanation:

Use the mid point formula to find the answer. Add the first x value to the second and divide by two for your x midpoint, then add the first y value to the second y value and divide by two for your y midpoint.

Which of the following points is on the graph of y = log1/2x?(1, 1/2)
(1/2, 1)
(0, 1)
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Answers

Answer:

(1/2,1) is on the graph of $y=\log_(1/2)x$

B is correct.

Step-by-step explanation:

Given: $y=\log_(1/2)x$

We are given a log function whose base 1/2.

Log property:

$\log_aa=1$

If base and mantissa is same then their value is 1

We need to choose correct point from the options.

Option 1: (1,1/2)

$y=\log_(1/2)1 = 0$

$(1)/(2)\neq 1$

False

Option 2: (1/2,1)

$y=\log_(1/2)(1/2) = 1$

$1= 1$

True

Option 3:

Log is not defined for x=0.

Hence, (1/2,1) is on the graph of $y=\log_(1/2)x$

(1/2,1) is the points is on the graph of y = log1/2x?

What is the points

For (1, 1/2):

So, By Substituting x = 1 and y = 1/2 into the equation, we get:

1/2 = log₁/₂(1)

Since log of 1 to any base is always 0, the equation becomes:

1/2 is not equal to 1

In terms of Option 3: Log is not defined for x=0.

Therefore , (1/2,1) is on the graph of y = log1/2x?

Answers

$1.\n(n-2)(3n+7)+2n(2n+3)\n\n=n\cdot3n+n\cdot7-2\cdot3n-2\cdot7+2n\cdot2n+2n\cdot3\n\n=3n^2+7n-6n-14+4n^2+6n\n\n=7n^2+7n-14$

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$2.\n4x^2-25=(2x)^2-5^2=(2x-5)(2x+5)$

1.(n-2)(3n+7)+2n(2n+3)
We'll start with (n-2)(3n+7)
Use the FOIL method to simplify: First, Outside, Inside, Last.
Multiply the first numbers of each bracket (n and 3n), the outside numbers (n and 7), the inside numbers (-2 and 3n) and the last numbers (-2 and 7)
F= 3n×n= 3n²
O= n×7= 7n
I= -2×3n= -6n
L= -2×7= -14
Add them together, you get 3n² + n -14.
The second part is 2n(2n+3)
Multiply both numbers inside the bracket by 2n
2n×2n= 4n²
3×2n= 6n
Add these terms with the previous ones
7n² + 7n -14
Because they all have a common factor of 7, we can represent the equation as
7(n² + n -2)

2. 4x²-25
To factor this, we convert it into two expressions that we multiply together (like converting -9 into 3×-3)
2x × 2x= 4x²
5 × -5= -25
The answer is (2x+5)(2x-5)

Vinyl wallpaper is needed to cover 4 walls of a room. Each wall measures 12 feet by 8 feet and each bolt of wallpaper covers 72 square feet. Deduct 52 square feet for windows and the door. If the wallpaper costs $13.90 per bolt, how much will the paper cost?