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arsen [322]
2 years ago
12

Joanne cannot decide which of two washing machines to buy. The selling price of each is ​$480 The first is marked down by ​%50 T

he second is marked down by ​%30 with an additional ​%20 off. Find the sale price of each washing machine. Use pencil and paper. Explain why should buy the first washing machine rather than the second if the machines are the same except for the selling price.
Mathematics
2 answers:
serious [3.7K]2 years ago
5 0

Answer:

i can not be cas  thae are the same

Step-by-step explanation:

viktelen [127]2 years ago
4 0

Answer: She should buy the first machine because it’s cheaper than the second.

Step-by-step explanation:

The first is marked down 50% which makes it $240 rather than $480.

The second is marked down 30%, making it $336 and then another 20% making it $268.80.

The second machine is $28.80 more than the first.

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Suppose a system of two linear equations has one solution. What must be true about the graphs of the two equations?
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They should both have the same solution?
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Taya2010 [7]

Answer:

<h2>The interest ethan will pay is $164.25</h2>

Step-by-step explanation:

To calculate the interest paid by ethan on the borrowed bike using the formula.

Simple Interest = Principal * rate * time/100

Principal =  $2,190, rate = 2.5%, time = 3years

On substitution

SI = \frac{2190*3*2.5}{100}

SI = \frac{16,425}{100}\\ SI= $164.25

The interest ethan will pay is $164.25

3 0
3 years ago
How to solve the inequality 1/5 ≤ x/15?
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Answer:

3 <_ x

Step-by-step explanation:

multiply both sides by 15

1/5 * 15 <_ x

15/5 <_ x

3 <_ x

8 0
3 years ago
Is (0,1) , (1,3) , (2,5), (3,7) a function?​
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Step-by-step explanation:

3 0
3 years ago
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Based on Pythagorean identities, which equation is true? A. Sin^2 theta -1= cos^2 theta B. Sec^2 theta-tan^2 theta= -1 C. -cos^2
Arturiano [62]

Answer:

D

Step-by-step explanation:

our basic Pythagorean identity is cos²(x) + sin²(x) = 1

we can derive the 2 other using the listed above.

1. (cos²(x) + sin²(x))/cos²(x) = 1/cos²(x)

1 + tan²(x) = sec²(x)

2.(cos²(x) + sin²(x))/sin²(x) = 1/sin²(x)

cot²(x) + 1 = csc²(x)

A. sin^2 theta -1= cos^2 theta

this is false

cos²(x) + sin²(x) = 1

isolating cos²(x)

cos²(x) = 1-sin²(x), not equal to sin²(x)-1

B. Sec^2 theta-tan^2 theta= -1

1 + tan²(x) = sec²(x)

sec²(x)-tan(x) = 1, not -1

false

C. -cos^2 theta-1= sin^2

cos²(x) + sin²(x) = 1

sin²(x) = 1-cos²(x), our 1 is positive not negative, so false

D. Cot^2 theta - csc^2 theta=-1

cot²(x) + 1 = csc²(x)

isolating 1

1 = csc²(x) - cot²(x)

multiplying both sides by -1

-1 = cot²(x) - csc²(x)

TRUE

3 0
3 years ago
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