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3 years ago

HELPPPPP !!!

Mathematics

2 answers:

kifflom [539]3 years ago

7 0

Answer:

(A) the subtraction property of equality

Step-by-step explanation:

Given

The steps in the question

Require

Justify step 2 to 3

Write out step 2:

$-4x+9 = 2x+10$

Apply subtraction property by subtracting 2x from both sides

$-4x-2x+9 = 2x-2x+10$

$-6x+9 = 10$

Notice that the above equation is represented in step 3.

<em>Hence, option A answers the question.</em>

charle [14.2K]3 years ago

7 0

A. the subtraction property of equality

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(x+4)(x-2) as a triomial in standard form

Nataliya [291]

Answer:

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Step-by-step explanation:

Step 1: Write out expression

(x - 4)²

Step 2: Expand

(x - 4)(x - 4)

Step 3: FOIL

x² - 4x - 4x + 16

Step 4: Combine like terms

x² - 8x + 16

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2 years ago

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Answer 1

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1 year ago

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3 years ago

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What is the circumference

Stolb23 [73]

There are two (equivalent) formulas for the circumference of a circle:

C = 2 pi r, where r is the radius of the circle

C = pi d, where d is the diameter of the circle

In this particular problem, however, we're dealing with arc length. For the shown central angle "theta" = 160 degrees, the arc length is 42 cm.
Knowing this enables us to calculate the radius or diameter of the circle.

Arc length = s = (radius) (central angle, in radians, not degrees)

First, convert 160 degrees to radians: 160 deg pi rad
----------- * ------------ = (8/9) pi rad
1 180 deg

Then 42 cm = r *(8/9) pi rad

Solve for the radius (r): divide 42 cm by (8/9) pi rad

Then use the formula for circumference introduced earlier:

C= 2 pi r Substitute [42 cm / ( (8/9) pi rad )] for r.

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3 years ago

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nikdorinn [45]

Answer:

0.314 gallon is required to cover a circular region with a radius of 40 feet

Step-by-step explanation:

Given

a gallon of paint will cover about 400 square feet in a single coat

To Find:

Number of gallons required to cover a circular region with a radius of 40 feet = ?

Solution: