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2 years ago

Which expression is equivalent to -3(2m- 1) - m

Mathematics

2 answers:

sladkih [1.3K]2 years ago

7 0

Answer:

=> -3(2m- 1) - n

=> -6m+3-n

=> -6m-n+3

svet-max [94.6K]2 years ago

5 0

The expression equivalent to -3(2m - 1) - n is;

D: -6m - n + 3

<h3>Algebra Expansion</h3>

We are given the expression;

-3(2m - 1) - n

Now, the first step will be to multiply out the bracket by distributive property as;

((-3 × 2m) - (-3 × 1)) - n

>> -6m + 3 - n

Rearranging gives;

-6m - n + 3

Looking at the given options the correct one is option D

Read more about algebra expansion at; brainly.com/question/4344214

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Daniel paid interest of 1,020 in 5years at12%per annum on a loan. Hw much did he borrow

Marat540 [252]

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3 years ago

A sea lion dove from the water's surface at sea level to an altitude of −216.12 meters in 2.4 minutes.

Valentin [98]

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4 years ago

Read 2 more answers

A rectangle is drawn so that the width is 3 feet shorter than the length. The area of the rectangle is 70 square feet. Find the

Vedmedyk [2.9K]

Answer:

The length of the rectangle (l) = 10 cm

The width of the rectangle (w) = 7 cm

Step-by-step explanation:

Let 'x' be the length of the rectangle

Given that the width is 3 feet shorter than the length

The width of the rectangle = x -3

Area of the rectangle = length × width

Area of the rectangle = length × width

= x ( x-3)

Given that the area of the rectangle = 70 square feet

x ( x-3) = 70

⇒ x² - 3x - 70 =0

⇒ x² - 10 x + 7 x - 70 =0

⇒ x (x -10) +7( x-10) =0

⇒ ( x+7) ( x-10) = 0

⇒ x =-7 and x=10

<u><em>Final answer:</em></u>-

we choose x=10

The length of the rectangle (l) = 10 cm

The width of the rectangle (w) = 7 cm

8 0

3 years ago

If f(x-3)=x^2-4x+5, what's f(1-x)

olganol [36]

Answer:

$\large\boxed{f(1-x)=x^2-4x+5}$

Step-by-step explanation:

$f(x-3)=x^2-4x+5\\\\f((x-3)+3)\to\text{put x + 3 to the equation of the function:}\\\\f(x-3+3)=(x+3)^2-4(x+3)+5\\\text{use the distributive property and}\ (a+b)^2=a^2+2ab+b^2\\f(x)=x^2+2(x)(3)+3^2+(-4)(x)+(-4)(3)+5\\f(x)=x^2+6x+9-4x-12+5\qquad\text{combine like terms}\\f(x)=x^2+(6x-4x)+(9-12+5)\\f(x)=x^2+2x+2\\\\f(1-x)\to\text{put 1 - x to the equation of the funtion f(x):}\\\\f(1-x)=(1-x)^2+2(1-x)+2\\\text{use the distributive property and}\ (a-b)^2=a^2-2ab+b^2$

$f(1-x)=1^2-2(1)(x)+x^2+(2)(1)+(2)(-x)+2\\f(1-x)=1-2x+x^2+2-2x+2\qquad\text{combine like terms}\\f(1-x)=x^2+(-2x-2x)+(1+2+2)\\f(1-x)=x^2-4x+5$

4 0

4 years ago

If the side lengths of a polygon are: 4x, 6x, 12, and 18 what is the value of x if the perimeter is 118?

Sonja [21]

The value of x for given polynomial is 8.8.

<h3>What is Polygon?</h3>

The definition of a polygon is given as a closed two-dimensional figure with three or more straight lines.

Here, the length of sides of given Polygon are:

4x, 6x, 12, 18

Perimeter of polygon = 118 units.

We know that,

Perimeter of polygon = Sum of all sides

118 = 4x + 6x + 12 + 18

118 = 10x + 30

118 - 30 = 10x

10x = 88

x = 88/10

x = 8.8

Thus, the value of x for given polygon is 8.8.

Learn more about Polygon from:

brainly.com/question/17756657

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2 years ago