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Lyrx [107]
2 years ago
6

((Please help)) Sales Price $21, 30% off Find Regular Price

Mathematics
2 answers:
Elan Coil [88]2 years ago
8 0

Answer: Original/regular price= $30

Step-by-step explanation:

Make an equation

x(0.7)=21

(Why 0.7, because since it’s 30 percent off and every percent is 100 so your technically paying 70 percent of the regular price)

Simplify the equation:

21/0.7=30

X=30

DedPeter [7]2 years ago
5 0

Answer:

I think the anser maybe 17 don't trust me bc im not quit sure

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Vikas is the head of student council this year at his high school in London. He is responsible for planning the annual graduatio
Naily [24]

Answer:

C = 600 + 50s

Step-by-step explanation:

The students are planning to visits the Canada's wonderland. The students will spend a full day at the park.

The entry fee for each student is $50 and the bus cost is $600. Each student will pay $50 for entry into the park.

Let

the number of student  = s

cost of the trip = C

Relating the variable C and s

The total amount of money the student will pay for entry fee = 50 × s = 50s

Therefore, cost of the trip can be expressed as follows

C = 600 + 50s

8 0
3 years ago
please help me, im stuck and i do not understand what i need to do, answer the question in the picture please
tino4ka555 [31]

Answer:

x = - \frac{1}{4}

Step-by-step explanation:

To find f(g(x)) substitute x = g(x) into f(x), that is

f(g(x))

= f(x + 1)

= 2(x + 1)² ← expand using FOIL

= 2(x² + 2x + 1) ← distribute

= 2x² + 4x + 2

To find g(f(x)) substitute x = f(x) into g(x), that is

g(f(x))

= g(2x²)

= 2x² + 1

----------------------------------------------------------

Equating  gives

2x² + 4x + 2 = 2x² + 1 ( subtract 2x² + 1 from both sides )

4x + 1 = 0 ( subtract 1 from both sides )

4x = - 1 ( divide both sides by 4 )

x = - \frac{1}{4}

4 0
2 years ago
Ann:my number has two periods.one contains the digits 4,1,and 8 in that order.the other contains the digit 9.
GarryVolchara [31]

The Decimal number system has following rules.

Suppose you have to write a number 4,567,892 .

2 -ones - (first period)

9-tens - (first period)

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5-hundred thousand- (second period)

4-million- (third period)

then comes ten million,hundred million and then Billion.

If a number is given you have to apply commas from left to right after every three places.

So, your number is 9,418.

8-first period

1--first period

4--first period

9- second period

8 0
3 years ago
Find the absolute value of complex number Z = 2+5
sasho [114]
The answer would be 7.
6 0
3 years ago
Consider the following equation. cos x = x3 (a) Prove that the equation has at least one real root. f(x) = cos x − x3 is continu
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