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3 years ago

Compare and contrast positive and negative slopes

Mathematics

1 answer:

zvonat [6]3 years ago

7 0

They are both slopes. Negative slopes go down, while positive slopes go up.

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Use completing the aquare to solve for x in the equation (x+7)(x-9)=25

Tema [17]

Answer:

x = 1 + sqrt(89) or x = 1 - sqrt(89)

Step-by-step explanation:

Solve for x:

(x - 9) (x + 7) = 25

Expand out terms of the left hand side:

x^2 - 2 x - 63 = 25

Add 63 to both sides:

x^2 - 2 x = 88

Add 1 to both sides:

x^2 - 2 x + 1 = 89

Write the left hand side as a square:

(x - 1)^2 = 89

Take the square root of both sides:

x - 1 = sqrt(89) or x - 1 = -sqrt(89)

Add 1 to both sides:

x = 1 + sqrt(89) or x - 1 = -sqrt(89)

Add 1 to both sides:

Answer: x = 1 + sqrt(89) or x = 1 - sqrt(89)

7 0

3 years ago

What is 710,200 written in word form

Julli [10]

For this case we have the following number:
710200
We are going to decompose this number as the sum of three numbers:
 $710200 = 700000 + 10000 + 200
$
 Let's now write each number:
70000: seven hundred thousand
10000: ten thousand
200: two hundred
Therefore, the complete expression is:
Seven hundred ten thousand two hundred
Answer:
Seven hundred ten thousand two hundred

8 0

3 years ago

SOMEONE PLEASE HELP! Set up an inequality showing that the radicand cannot be negative.

Stolb23 [73]

Answer:

3t-9 >= 0

Step-by-step explanation:

Original function f(t)= square root 3t-9

There cannot be a negative in the radicand therefore 3t-9 cannot equal a negative number.

6 0

4 years ago

Read 2 more answers

Use the proportion. What is 72% of 150

kherson [118]

Answer:

108

Step-by-step explanation:

150x0.72=108

4 0

3 years ago

Read 2 more answers

Say a population of fish triples every year. The population started with 5 fish. How many years will it

Lostsunrise [7]

Answer:

It should take 10 years

Step-by-step explanation:

In 1 year, if it triples, it should be 15 (population), and so on.

135

405

1215

3645

10935

32805

98415

295245

3 0

3 years ago