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marysya [2.9K]
3 years ago
8

An item is regularly priced at $40. It is on sale for 30% off the regular price. What is the sale price?

Mathematics
1 answer:
morpeh [17]3 years ago
8 0

40$ - 100% (full price)

x$ - 70% (100-30=70%)

40 * 70 = 100x

2800 = 100x

x = 28

Answer 28$

or

40$ = 100%

then 1% = 40/100 = 0.4$

so 70% will be 0.4 * 70 = 28$

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Which expression is equivalent to 4(2x + 1)?<br> 8x + 1<br> 8x +4<br> 6x + 5<br> O<br> 2x + 4
Anvisha [2.4K]

Answer:

8x + 4

Step-by-step explanation:

You just gotta distribute 4(2x+1) and it gives you the expression 8x + 4

6 0
3 years ago
What is the value of x?
iragen [17]

Answer:

80 degrees

Step-by-step explanation:

A triangle has 180 degrees so you have to add up the two angles with measurements you know (70 + 30= 100) and subtract 100 from 180

7 0
3 years ago
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1/2(x + 5)2 + 2 = 42.5
Monica [59]

Answer:

x=35.5

Step-by-step explanation:

reduce numbers

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7 0
3 years ago
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Which is true about the completely simplified difference of the polynomials a3b 9a2b2 − 4ab5 and a3b − 3a2b2 ab5?.
PtichkaEL [24]

The simplified difference of the polynomials (a³b+9a²b²-4ab⁵) and (a³b-3a²b²+ab⁵) is (12a²b²-5ab⁵).

<h3>What are Like terms?</h3>

Like terms are those terms that are having the same variables, also the variables are of the same order as well.

for example, 25x and 5x are like terms; 30xy and 7xy are like terms, 9x³ and 4x² are not like terms, etc.

Let's simplify the two of the given polynomials, therefore, find the difference between the two given polynomials.

a^3b+9a^2b^2 - 4ab^5 - (a^3b - 3a^2b^2+ab^5)\\\\= a^3b+9a^2b^2 - 4ab^5 - a^3b + 3a^2b^2-ab^5\\\\\text{Bring Like terms together}\\\\=a^3b - a^3b+9a^2b^2+3a^2b^2 -4ab^5-ab^5\\\\= 12a^2b^2-5ab^5

Hence, the simplified difference of the polynomials (a³b+9a²b²-4ab⁵) and (a³b-3a²b²+ab⁵) is (12a²b²-5ab⁵).

Learn more about Like Terms:

brainly.com/question/2513478

5 0
2 years ago
Given that F(x) = x 2 + 2, evaluate F(1) + F(5).
Igoryamba

Answer:

F(1)= (1)2 + 2

          2+2

           =4

F(5)= (5)2 + 2

          10+2

           =12

F(1) + F(5) = 12+4

            =16

Step-by-step explanation:

:D

8 0
3 years ago
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