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Mice21 [21]
3 years ago
8

What does the expression l∙w represent

Mathematics
1 answer:
cluponka [151]3 years ago
4 0
It represents Length times width
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The points (-1,2) and (4,y) have a slope of -4/5. what is the y-coordinate of the point (4,y)
Nastasia [14]

Answer:

y = - 2

Step-by-step explanation:

Calculate the slope m using the slope formula

m = ( y₂ - y₁ ) / ( x₂ - x₁ )

with (x₁, y₁ ) = (- 1,2) and (x₂, y₂ ) = (4, y)

m = \frac{y-2}{4+1}, hence

\frac{y-2}{5} = - \frac{4}{5} ( cross- multiply )

5(y - 2) = - 20 ( divide both sides by 5 )

y - 2 = - 4 ( add 2 to both sides )

y = - 2

coordinates of point are (4, - 2)

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3 years ago
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no habla español

Step-by-step explanation:

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3 years ago
Given the polynomial expression 3x^2 + 3bx - 6x - 6b, factor completely.
My name is Ann [436]
The answer is 3 (x+b) (x-2)



Yw! :)
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2 years ago
A square pyramid is shown: 0.4 feet , 0.4 feet , 5 feet What is the surface area of the pyramid?
Vlad [161]
A square pyramid is called like so because its base is a square.

notice this one, its base is a 0.4x0.4 square, and the triangular faces have a base of 0.4 and an altitude or height of 5.

so we can simply get the area of the base and all four triangular faces and sum them up, and that's the surface area of the pyramid.

\bf \stackrel{\textit{squarish base}}{(0.4\cdot 0.4)}~~+~~\stackrel{\textit{4 triangles}}{4\left[\cfrac{1}{2}(0.4)(5)  \right]}\implies 0.16~~+~~4\implies 4.16
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3 years ago
Find the measure of angle A.<br> 4x<br> 135°<br> 5x<br> A
Mkey [24]
<h2><u>Using </u><u>this </u><u>equation:</u></h2>

<u>4 \times  + 5 \times  + 135 = 180</u>

<h2><u>We </u><u>can </u><u>solve</u><u> </u><u>for </u><u>X:</u></h2>

<u>9 \times  + 135 = 180 \\ 9 \times  = 45 \\  \times  = 45</u>

<h2><u>Multiply</u><u> </u><u>this </u><u>value</u><u> of</u><u> </u><u>x </u><u>to </u><u>4</u><u> </u><u>and </u><u>5</u><u> </u><u>to </u><u>get </u><u>the</u><u> </u><u>other</u><u> </u><u>two </u><u>angels.</u></h2>
8 0
2 years ago
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