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3 years ago

Fill in the blank with a number to make the expression a perfect squared… W squared + 6w +

Mathematics

1 answer:

Neporo4naja [7]3 years ago

8 0

Answer:

$(a+b)^{2} =a^{2}+2ab+b^{2}$

$(1)w^{2}+2(3)(1)w+3^{2}\\\\=(w+3)^{2}\\\\=(w+3)(w+3)$

Therefore, $w^{2} +6w+9$ makes a perfect squared.

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A rectangular prism has a volume of 2320.5 in.³ a width of 12.75 inches and a height of 14 inches what is the length?

Mamont248 [21]

I think it's 13 inches because V=Bh

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3 years ago

Which scale factors produce a contraction under a dilation of the original image?

Leokris [45]

Answer:

1/2

-1/2

Step-by-step explanation:

we know that

If a dilation produce a contraction that means that the absolute value of the scaling factor is less than 1

If a dilation produce an enlargement that means that the absolute value of the scaling factor is greater than 1

Verify each case

case 1) 2

$\left|2\right|=2$

$2 > 1$ ----> is a enlargement

case 2) 1/2

$\left|1/2\right|=1/2$

$1/2 < 1$ ----> is a contraction

case 3) -2

$\left|-2\right|=2$

$2 > 1$ ----> is a enlargement

case 4) -1/2

$\left|-1/2\right|=1/2$

$1/2 < 1$ ----> is a contraction

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3 years ago

A line passes through the point (-9, -3) and has a slope of 2.

tresset_1 [31]

Answer:

Step-by-step explanation:

hello :

note :

Use the point-slope formula.

y - y_1 = m(x - x_1) when : x_1= -9 y_1= -3

m= 2 (the slope)

an equation in the point-slope form is : y +3 = 2(x+9)

means : y+3 =2x +18

an equation in slope-intercept id : y=2x+15

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2 years ago

Describe the transformation shown in the graph.

geniusboy [140]

Answer:

A: Rotate 90 degrees counterclockwise

Step-by-step explanation:

Its the only one that makes sense for where the shape is now it only moved one quadrant

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3 years ago

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Gnoma [55]

Answer:

A line of best fit is a straight line going through a trend on a scatter plot.

Step-by-step explanation:

A well drawn line of best fit is just a line going straight through the trend of dots to approximate an exact trend from a non-exact plot, so just draw a line that stays in the middle of the dots and you should do great.

Hope this helped!

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3 years ago