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SSSSS [86.1K]
3 years ago
7

The expression to find the perimeter of a rectangle is 2(length + width). What is the 1 perimeter, in units, of a rectangle of l

ength 7 unit and width 2 unit? ​
Mathematics
2 answers:
Svetradugi [14.3K]3 years ago
8 0
The answer would be 18 units I believe

2(7+2)
2(9)
18 units

kolezko [41]3 years ago
4 0

Answer:

18/14 but reduced it would be 9/7

Step-by-step explanation:

Formula :P = 2(L + W)

You would change them into fractions over one, which os the 1 perimeter.

L = 1/7

W = 1/2

P = 2(L + W)

P = 2(1/7 + 1/2)

P = 2(2/14 + 7/14)

P = 2(9/14)

P = 18/14 which reduces to 9/7

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What is the solution to 4x + 6 ≤ 18?​
maks197457 [2]
The answer would be x less than or equal to 3

(same equality symbol you used)

3 0
3 years ago
Read 2 more answers
What is the volume of the rectangular prism?
Rufina [12.5K]

Answer:

\large\boxed{Q1.\ 80\ cm^3}\\\boxed{Q2.\ 45\ in^3}\\\boxed{Q3.\ 48\ m^3}\\\boxed{Q4.\ A,\ D}\\\boxed{Q5.\ 96\ in^3}

Step-by-step explanation:

\text{The formula of a volume of a rectangular prism:}\\\\V=lwh\\\\l-length\\w-width\\h-height

\bold{Q1}\\\\l=10\ cm,\ w=4\ cm,\ h=2\ cm\\\\V=(10)(4)(2)=80\ cm^3\\\\\bold{Q2.}\\\\l=5\ in,\ w=3\ in,\ h=3\ in\\\\V=(5)(3)(3)=45\ in^3\\\\\bold{Q3.}\\\\l=4\ m,\ w=2\ m,\ h=6\ m\\\\V=(4)(2)(6)=48\ m^3\\\\\bold{Q4.}\\\\V=120\ ft^3\\\\\bold{A:(5)(4)(6)=120}\\B:\ (7)(7)(6)=294\\C:\ (3)(6)(4)=72\\\bold{D:\ (10)(3)(4)=120}\\\\\bold{Q5.}\\\\l=8\ in,\ w=4\ in,\ h=3\ in\\\\V=(8)(4)(3)=96\ in^3

4 0
3 years ago
#2
I am Lyosha [343]

You have the right idea that things need to get multiplied.

What should be done is that the entire fraction needs to get multipled by the lowest common denominator of both denominators.

Let's look at the complex numerator. Its denominators are 5 and x + 6. Nothing is common with these, so both pieces are needed.

The complex denominator has x - 3 as its denominator. With nothing in common between it and the complex numerator, that piece is needed.

So we multiply the entire complex fraction by (5)(x + 6)(x -3).

Numerator: (\frac{1}{5} -\frac{5}{x + 6})(5)(x +6)(x-3) =\frac{1}{5}(5)(x +6)(x-3) -   \frac{5}{x + 6}(5)(x +6)(x-3)

= (x+6)(x-3) - (5)(5)(x-3)

= (x+6)(x-3) - 25(x-3)

= (x-3)(x + 6 - 25) <--- by group factoring the common x - 3

= (x -3)(x - 19)

Denominator:

\frac{25}{x - 3} * (5)(x + 6)(x - 3) = (25)(5)(x + 6) = 125(x + 6)


Now we put the pieces together.


Our fraction simplies to (x - 3) (x - 19) / 125 (x + 6)

5 0
4 years ago
PLEEEEASE HELP!!!! QUICK
lana [24]

Answer:

By 25% :)

Step-by-step explanation:

5 0
4 years ago
Determine the equation of the linear function that has a slope of -4 and passes through the point (2,-4). Write the equation in
padilas [110]

Answer:

Part 1) y=-4x+4

Part 2) The graph in the attached figure

Step-by-step explanation:

Part 1)

we know that

The linear equation in slope intercept form is equal to

y=mx+b

where

m is the slope

b is the y-intercept

we have

m=-4\\point\ (2,-4)

substitute in the linear equation

-4=-4(2)+b

solve for b

-4=-8+b\\b=8-4\\b=4

substitute

y=-4x+4

Part 2) Draw the equation

we know that

To graph a line we need two points

we have the y-intercept (0,4) and (2,-4)

Plot the points, connect them and join to draw the line

see the attached figure

7 0
3 years ago
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