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3 years ago

Evaluate the expression 7!/4!

Mathematics

1 answer:

marissa [1.9K]3 years ago

3 0

The answer would be 21

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Write the equation of a line that goes the through the point (4,-2) and is

kirza4 [7]

Answer:

y=3x-14

Step-by-step explanation:

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3 years ago

Write a word that has line symmetry, like the word OHIO. Draw the line(s) of symmetry for each letter

Karolina [17]

Answer:

1. MOM can be cut in half vertically in the middle of the O.

2. HIKED can be cut in half horizontally cutting right down the middle.

3. CHECK can also be cut in half horizontally just like No. 2.

can be cut in half vertically right down the middle starting at the top of M.

5. CHECKBOOK can be cut in half horizontally cutting right down the middle.

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3 years ago

A population of mice is increasing exponentially. On Monday there were 120 most. One month later there were 132 most. Ready func

djyliett [7]

Answer:

$y=120 * 1.1^x$ --- function

The monthly rate is 10%

Step-by-step explanation:

Given

Let

$x \to months$

$y \to mice$

So, we have:

$(x_1,y_1) = (0,120)$ --- Monday

$(x_2,y_2) = (1,132)$ --- One month later

Required

The function

The function is represented as:

$y=ab^x$

In $(x_1,y_1) = (0,120)$ , we have:

$120 = a * b^0$

$120 = a * 1$

$120 = a$

$a=120$

In $(x_2,y_2) = (1,132)$ , we have:

$132 = a * b^1$

$132 = a * b$

Substitute: $a=120$

$132 = 120 * b$

Solve for b

$b = \frac{132}{120}$

$b = 1.1$

So, the function is:

$y=ab^x$

$y=120 * 1.1^x$

To calculate the monthly rate (r), we have:

$y =a(1 + r)^x$

Compare to: $y =ab^x$

$1 + r = b$

Make r the subject

$r = b-1$

Substitute $b = 1.1$

$r = 1.1-1$

$r = 0.1$

Express as percentage

$r = 0.1*100\%$

$r = 10\%$

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3 years ago

What’s the answer to number 18 please?!

kozerog [31]

2,300,000 + 510,000 = 2,810,000 them move a decimal to where is greater then 1

2.81 x 10^6 but wait, there isnt an answer for this so it has to be 28.1 x 10^5 witch is B

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3 years ago

Euclidean Geometry<br>which distance measures 7 units

belka [17]

Answer:

Whichever distance you can count the metric units and see that the x value is 7 on

Step-by-step explanation:

Whichever distance you can count the metric units and see that the x value is 7 on

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3 years ago