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exis [7]
3 years ago
11

Which description represents the expression 5x−9 ? A. 9 is subtracted from the product of 5 and a number B.9 more than the produ

ct of 5 and a number C.9 is subtracted from the sum of 5 and a number D.5 times the difference of a number and 9
Mathematics
2 answers:
notka56 [123]3 years ago
7 0
A. 9 is subtracted from the product of 5 and a number 

is your answer

hope this helps
madam [21]3 years ago
3 0

Answer:


It's A, I took the test.


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A members-only speaker series allows people to join for $28 and then pay $4 for every event attended. What is the total cost for
wariber [46]

Given:

Joining fee = $28

Fee of each event = $4

To find:

Total cost for someone to attend 4 events.

Solution:

Let the number of events be x and total fee be y.

Fee for 1 event = $4

Fee for x events = $4x

Joining fee remains constant. So, the total fee is

y=28+4x

Substitute x=4 in this equation.

y=28+4(4)

y=28+16

y=44

Therefore, total cost of 4 events is $44.

8 0
3 years ago
The number 5.003 × 10 -5 written in standard form is _____.
Tanya [424]
When the 10 is to a negative power you move the decimal to the left. in this case its 5 spots. i believe your answer is .00005003
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3 years ago
Please tell me what is 6(2b-4)
Vilka [71]

Distribute

6 × 2b + 6 × -4

Simplify 6 × 2b to 12b

12b + 6 × -4

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<u>12b - 24</u>

7 0
3 years ago
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Learning Task 4. Solve the problem by applying the sum and product of roots
Delvig [45]

Answer:

<em>Thus, the dimensions of the metal plate are 10 dm and 8 dm.</em>

Step-by-step explanation:

For a quadratic equation:

x^2+bx+c=0

The sum of the roots is -b and the product is c. Note the leading coefficient is 1.

We know the perimeter of the rectangular metal plate is 36 dm and its area is 80 dm^2. Being L and W its dimensions, then:

P=2(L+W)=36

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Note both formulas are closely related to the roots of the quadratic equation, we only need to adjust the data for the perimeter to be exactly the sum of L+W and not double of it.

Thus we use the semi perimeter instead as P/2=L+W=18

The quadratic equation is, then:

x^2-18x+80=0

Factoring by finding two numbers that add up to 18 and have a product of 80:

(x-10)(x-8)=0

The solutions to the equation are:

x=10, x=8

Thus, the dimensions of the metal plate are 10 dm and 8 dm.

6 0
3 years ago
1)12-5x-4kx=y, solve for x
sveticcg [70]
12-x(5-4k)=y
12-y=x(5-4k)
12-y/(5-4k)=x
6 0
3 years ago
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