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3 years ago

Type ALL the steps of writing the equation of the line given the slope of the line is −4 and a point on the line is (−2,1).

Mathematics

1 answer:

Mars2501 [29]3 years ago

3 0

Answer:

y = -4x - 7

Step-by-step explanation:

we use the slope intercept formula given by; y = mx + b

b = y intercept, which is when x = 0

m = slope

so they tell us the slope.. we just need to find b - the y intercept.

y = mx + b

plug in your coordinates (-2,1)

1 = -4(-2) + b

1 = 8 + b

1 - 8 = b

-7 = b

put it all together.

y = -4x - 7

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3 years ago

A credit card contains 16 digits between 0 and 9. However, only 100 million numbers are valid. If a number is entered randomly,

marusya05 [52]

Answer:

$P(valid) = 1 * 10^{-8}$

Step-by-step explanation:

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8 0

3 years ago

Hand lotion origninally cost $3.00 for 16-ounce. This week the lotion is on sale $2.40 for 16-ounce. What is the percent decreas

pshichka [43]

Answer:

20%

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To find out the percent decrease of the price of the lotion, the first step is to get the amount of the decrease in price.

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The difference is then of $0.60 per bottle.

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3 years ago

Sin (3x+19)=Cos(5x-25) What is the value of x? A) 6 B) 12 C) 18 D) 24

malfutka [58]

Answer:

Step-by-step explanation:

Using the cofunction identity

sin x = cos(90 - x)

Given

sin(3x + 19) = cos(5x - 25), then

3x + 19 = 90 - (5x - 25)

3x + 19 = 90 - 5x + 25

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8x + 19 = 115 ( subtract 19 from both sides )

8x = 96 ( divide both sides by 8 )

x = 12 → B

5 0

3 years ago

Read 2 more answers

Find cscθ. pls answer

ExtremeBDS [4]

Answer:

The answer to your question is csc Ф = $\frac{-5}{4}$

Step-by-step explanation:

Process

1.- Determine the sign

We must determine csc Ф in the forth quadrangle, here csc is negative.

2.- Determine the hypotenuse

c² = a² + b²

c² = 3² + (-4)²

c² = 9 + 16

c² = 25

c = 5

3.- Determine csc Ф

csc Ф = $\frac{hypotenuse}{opposite side}$

csc Ф = $\frac{5}{-4}$ = $\frac{-5}{4}$

7 0

3 years ago