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2 years ago

What does the expression l+w+l+w represent

Mathematics

2 answers:

harina [27]2 years ago

8 0

Length + width+ length + width? I think..

djverab [1.8K]2 years ago

5 0

That means legthn+lgnth +width+width

that is the perimeter formula for a rectangle or the measure around a rectangle

it can be written as (l-legnth)
perimiter=2l+2w or
p=2l+2w or
p=2(l+w)

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Solve the system using the substitution method: 3x + 5y = -10 X - 5y =-10

inn [45]

Answer:

Point Form:

(−5,1)

Equation Form:

x=−5, y=1

Step-by-step explanation:

Solve for the first variable in one of the equations, then substitute the result into the other equation.

1. x=5y−10

2. 20y−30=−10

3. y=1

4. x=−5

4 0

2 years ago

What value of x makes this equation true x/3 - 3 = x/9 + 3

Radda [10]

Answer:

27, you need to simplify both sides of the equation to get x on one side.

Step-by-step explanation:

7 0

2 years ago

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What is the following sum 3b^2

densk [106]

The given expression is $3b^2*(\sqrt[3]{54a}) + 3*(\sqrt[3]{2ab^6})$

This can be simplified as :

= $3*b^2*(\sqrt[3]{27 *2*a}) + 3*(\sqrt[3]{2*a*b^6})$

We know that: $\sqrt[3]{27} = 3$

Similarly we also can simplify: $\sqrt[3]{b^6} = b^2$

So our expression will look like this:

= $3*3*b^2*(\sqrt[3]{2a}) + 3*b^2*(\sqrt[3]{2a})$

= $9b^2*(\sqrt[3]{2a}) + 3b^2*(\sqrt[3]{2a})$

= $\sqrt[3]{2a}*(9b^2 + 3b^2)$

= $\sqrt[3]{2a}*(12b^2)$

This can also be written as:

$12b^2(\sqrt[3]{2a})$

So the Answer is Option B

6 0

2 years ago

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Determine the unknown side lengths’ to the nearest tenth. for the first question and also please help with question 6

Levart [38]

Answer:

z =15cm and

y=9.0cm

Step-by-step explanation:

Use sine rule

12/ sin53 = z / sin 90

Z = 12 x sin 90 / sin 53

Z = 15cm

To find y the angle opposite to y will be 180-(90+53)=37º

15/sin 90= y/sin37

y= 15 x sin37 /sin 90

y = 9.0cm

7 0

3 years ago

I need help with this, please!

Vera_Pavlovna [14]

Option D: $x \geq 3$ is the solution

Explanation:

The given expression is $3 x-1 \geq 8$

We need to determine the solution of the expression.

Solution:

The solution of the expression can be determined by solving the expression for the variable x.

Thus, we have,

$3 x-1 \geq 8$

Adding both sides of the expression by 1, we get,

$3x\geq 9$

Dividing both sides of the expression by 3, we get,

$x \geq 3$

Thus, the solution of the expression is $x \geq 3$

Hence, Option D is the correct answer.

6 0

2 years ago