2 years ago

Select the correct answer.

Mathematics

1 answer:

stich3 [128]2 years ago

7 0

Answer:

A. 15x > 45

Step-by-step explanation:

cuz more than 45 hours a day.

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Mary ran 3.45 miles on Monday, 2.2 miles on Tuesday, 0.055 miles on Wednesday, and 9.03 miles on Thursday. How many total miles

Nata [24]

Well all you need to do is add them so 3.45 + 2.2 = 5.65 then add 0.055 to 5.65 which is 5.705 and last but not least, add 9.03 to 5.705 which is 14.735 which makes 14.735 how many miles she ran. Hope this helps

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2 years ago

I need help with point slope formula bad

NISA [10]

Ok so this question:
y + 1 = - ( x - 2 ) (distribute the negative inside the parenthesis)
y + 1 = -x + 2 (substitute the y= -1)
-1 + 1 = -x + 2
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3 years ago

A mountain climber needs to descen 1,500 feet. He wants to do so in 4 equal discents. How far should he travel in each descent?

Vinil7 [7]

Answer:

6,000

Step-by-step explanation:

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3 years ago

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How do you write negative seven minus the product of 5 and number is 28

goldenfox [79]

-7 - (5.x) = 28? Is that what you were looking for?

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3 years ago

Find the solution of the system by graphing

zvonat [6]

Answer:

x = -2

y = -1

(-2, -1)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS
Equality Properties

Algebra I

Solving systems of equations using substitution/elimination
Solving systems of equations by graphing

Step-by-step explanation:

Step 1: Define systems

y = x + 1

3x + 3y = -9

Step 2: Solve for x

Substitution

Substitute in y: 3x + 3(x + 1) = -9
Distribute 3: 3x + 3x + 3 = -9
Combine like terms: 6x + 3 = -9
Isolate x term: 6x = -12
Isolate x: x = -2

Step 3: Solve for y

Define original equation: y = x + 1
Substitute in x: y = -2 + 1
Add: y = -1

Step 4: Graph systems

Check the solution set.

6 0

3 years ago