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irakobra [83]
3 years ago
13

Which of the following expressions could be used to find the sale price of an item that costs d dollars if it is on sale for 30%

off?
A. 30d
B. 70d
C. 0.3d
D. 0.7d
Mathematics
1 answer:
Svetlanka [38]3 years ago
7 0

Answer:

C

Step-by-step explanation:

This is because 30d would be multiplying whatever the cost by 30, however with 0.3d you are taking 0.3 or 30% off of the whole number.

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8.1 = 0.9a, how do you solve?
GrogVix [38]

Answer:

a = 9

Step-by-step explanation:

Simplifying

8.1 = 0.9a

Solving

8.1 = 0.9a

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '-0.9a' to each side of the equation.

8.1 + -0.9a = 0.9a + -0.9a

Combine like terms: 0.9a + -0.9a = 0.0

8.1 + -0.9a = 0.0

Add '-8.1' to each side of the equation.

8.1 + -8.1 + -0.9a = 0.0 + -8.1

Combine like terms: 8.1 + -8.1 = 0.0

0.0 + -0.9a = 0.0 + -8.1

-0.9a = 0.0 + -8.1

Combine like terms: 0.0 + -8.1 = -8.1

-0.9a = -8.1

Divide each side by '-0.9'.

a = 9

Simplifying

a = 9

5 0
3 years ago
What is the lowest term of 75/60 as an improper fraction?
Katena32 [7]
75/60 = 15/12 = 5/4. This is the lowest term
5 0
2 years ago
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A bottle holds 5/12 gallon of water. How many bottles can be filled with 2 1/4<br> gallons of water?
tekilochka [14]

Answer: 0.185 gallons

Step-by-step explanation:

Divide 5/12 by 2 1/4

First convert the improper fraction to a proper fraction, 2 1/4 = 9/4

5/12 ÷ 9/4

= 5/12 × 4/9

= 5/27 = 0.185

6 0
3 years ago
Please Help! I will give you a lot of points and the brainiest
Maurinko [17]

Answer:

De Morgan's Theorem, T12, is a particularly powerful tool in digital design. The theorem explains that the complement of the product of all the terms is equal to the sum of the complement of each term. Likewise, the complement of the sum of all the terms is equal to the product of the complement of each term.

Step-by-step explanation:

Step by step you got it just beleive

4 0
2 years ago
Can someone please help me with this math question?
Vika [28.1K]

Answer:

y = -1x - 3

or

y = -x - 3

Step-by-step explanation:

8 0
3 years ago
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