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Semmy [17]
3 years ago
6

I have $5$ different mathematics textbooks and $4$ different psychology textbooks. In how many ways can I place the $9$ textbook

s on a bookshelf, in a row, if there must be a psychology textbook exactly in the middle, and there must be a mathematics textbook at each end?
Mathematics
1 answer:
leonid [27]3 years ago
6 0

Answer:

What

Step-by-step explanation:

You can’t have more than 2 combinations with £9

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Translate each algebraic expression to a verbal phrase
GaryK [48]

Answer:

1.  A number decreased by seven.

2. A number increased by nine.

3. The product of six and a number, divided by eight.

4. The product of three and a number increased by five is equal to twenty.

5. The product of two and a number increased by eight is equal to twenty-three.

Step-by-step explanation:

1.   x-7

A number decreased by seven.

2. y+9

A number increased by nine.

3. 6m/8

The product of six and a number, divided by eight.

4. 3y+5 =20

The product of three and a number increased by five is equal to twenty.

5. 2(x+8)= 23

The product of two and a number increased by eight is equal to twenty-three.

3 0
3 years ago
How do I solve the problem 3(2x+5)
barxatty [35]
6x + 15

anything 2 ask please pm me
7 0
4 years ago
Read 2 more answers
What is the equivalent ratios of 10:100
SSSSS [86.1K]
1:10 or 100:1000 so the point is to just add one zero to each side and you'll get it right
5 0
3 years ago
Which classification best describes the following system of equations x=5 y=8 -x-y+z=0
vichka [17]
What are the answer choices?

7 0
3 years ago
Each course at Mt. Regis College is worth either 3 or 4 credits. The members of the men's swim team are taking a total of 48 cou
kolezko [41]

Answer:

3 Credit Courses = 37

4 Credit Courses = 11

Step-by-step explanation:

1. Set up 2 equations:

3x + 4y = 155

x + y = 48

2. Simplify the second expression for x by subtracting y from both sides

x = 48 - y

3. Substitute 48 - y for x

3(48-y) + 4y = 155

4. Simplify the expression by multiplying by 3

144 - 3y +4y = 155

5. Subtract 144 from both sides and subtract 3y from 4y

y = 11 = 4 Credit Courses

6. Substitute y for equation 2

x = 48-11

7. solve for x

x = 37 = 3 Credit Courses

7 0
3 years ago
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