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Ede4ka [16]
3 years ago
12

The slope of a line is 2/3. What is the slope of a line that is perpendicular to this line?

Mathematics
1 answer:
jekas [21]3 years ago
4 0

Answer:

-3/2

Step-by-step explanation:

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The price of a microwave oven went up from $75 to $90; then went on sale for $57. What is the percent decrease from the original
Arisa [49]

Answer:

<u>The percent decrease of the microwave from the original price to the sale price is 24%</u>

Step-by-step explanation:

1. Let's review the information given to us to answer the question correctly:

Original price of a microwave = $ 75

Mark-up price of the microwave = $ 90

Sale price of the microwave = $ 57

2. What is the percent decrease from the original price to the sale price?

For answering this question we will use the Direct Rule of Three this way:

Price         Percentage

75                 100%

57                   x

75x = 57 * 100

75x = 5,700

x = 5,700/75

x = 76

76 = 100 - 24

<u>The percent decrease of the microwave from the original price to the sale price is 24%</u>

5 0
4 years ago
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Find the surface area of a cube with edges 6.57 cm long.
notsponge [240]

Answer:

258.9894 is the total surface area

5 0
3 years ago
How do we best help him learn his Multiplication table ….help for 3rd grade grandson
laiz [17]

Answer:

you can get flash cards and work with him everyday that's how I got mine

4 0
3 years ago
f(x) = square root ( x^4 -16x^2) let f be the function given by: . . a) Find the domain of f.. b) Find f '(x). c) Find the slope
Bond [772]
A ) The domain:
x^{4} -16 x^{2}  \geq 0 \\  x^{2} ( x^{2} -16) \geq 0 \\  x^{2} -16 \geq 0 \\  x^{2}  \geq 16
x ≤ -4  and x≥ 4  or:  x ∈ ( - ∞ , - 4 ) ∪ ( 4  , + ∞ )
b ) f ` ( x ) = \frac{1}{2 \sqrt{ x^{4} -16 x^{2} } } *( 4 x^{3} - 32 x ) = \\ = \frac{2x( x^{2} -8)}{ \sqrt{ x^{4}-16 x^{2}  } }
c ) The slope of the line normal to the graph at x = 5
m = -1 / f `(x)
f ` ( x ) = \frac{10(25-8)}{ \sqrt{625-400} }=  \frac{10*17}{15} = \frac{34}{3}
m = - 3/34 

8 0
3 years ago
Elliot earned $49 last month walking his neighbors dog. He earns $7 each time he walks the dog. How many times did Elliot walk h
Alekssandra [29.7K]

Answer:

7 times

Step-by-step explanation:

$49/$7 each time = 7 times

6 0
3 years ago
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