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3 years ago

Find three solutions for y=-2x-1

Mathematics

2 answers:

Pani-rosa [81]3 years ago

5 0

Answer:

(1, -3)

(2, -5)

(3, -7)

Step-by-step explanation:

Randomly choose three values for "x". Substitute each of them separately into the formula to find the "y". Then write the solution as an ordered pair (x, y).

I will choose x=1, x=2 and x=3.

When x=1:

y = -2x - 1

y = -2(1) - 1

y = -2 - 1

y = -3

(1, -3)

When x=2:

y = -2x - 1

y = -2(2) - 1

y = -4 - 1

y = -5

(2 , -5)

When x=3:

y = -2x - 1

y = -2(3) - 1

y = -6 - 1

y = -7

(3, -7)

Phoenix [80]3 years ago

3 0

(1,-3), (2,-5), and (3,-7)

An easy way to find this is set you a definite y value. So try -3 as the value for y. Solve for x as normal so -3=-2x-1. Add 1 on both sides to get -2=-2x. Divide on both sides by -2 and get 1=x. Since the slope is -2 you keep subtracting -2 from -3 and you’ll get -5 when x=2 and so on.

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The height of the solid is 5in and the width is 6in. X is the value of the length

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2 years ago

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2 years ago

The formula for simple interest is I=Prt.

sineoko [7]

a. The formula solved for t is t = I/Pr

b. The value of t in the table is 3 years

<h3>Simple Interest</h3>

From the question, we are to solve for t in the given formula

The given formula is the formula for simple interest

I = Prt

To solve for t, we will divide both sides of the equation by Pr

That is,

I/Pr = Prt/Pr

I/Pr = t

∴ t = I/Pr

The formula solved for t is t = I/Pr

b. We are to find the value of t when

I = $75

P = $500

r = 5% = 0.05

From

t = I/Pr

t = 75/(500×0.05)

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Hence, the value of t in the table is 3 years

Learn more on Simple interest here: brainly.com/question/25793394

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4 0

1 year ago

The population of the US is about 300 million people. there are approximately 2.2 x 10 to the 12th power U.S. dollars in existen

koban [17]

Answer:

$7,333.33 (approximately)

Step-by-step explanation:

First step: $10^{12}$ = 1,000,000,000,000

Second step: 2.2 x 1,000,000,000,000 = 2,200,000,000,000

Third step: 2,200,000,000,000 ÷ 300,000,000 = 7,333.333333333333

7 0

8 months ago

Consider the sequence 100, 95, 90, 85, 80, 75 ... What is the value of f(8)?

MAVERICK [17]

Answer:

f(8) = 65

Step-by-step explanation:

Find a pattern in the sequence. It might be an arithmetic sequence (always adds or subtract by a certain number), or a geometric sequence (always multiplies or divides by a certain number).

To find a pattern in this decreasing sequence, we find either the common difference or the common divisor of each pair of consecutive numbers.

• 100 - 95 = 5

• 95 - 90 = 5

• 90 - 85 = 5

• 85 - 80 = 5

• 80 - 75 = 5

Now, we know that this is an arithmetic sequence, and the common difference is 5.

To calculate f(8), we find the 8th term in the sequence. We can do that by counting the terms in the sequence and using the common difference, 5, that we found, to continue the sequence.

• f(1) = 100

• f(2) = 95

• f(3) = 90

......

• f(7) = 70

• f(8) = 65

5 0

2 years ago