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3 years ago

9

If your class received a new student today, describe how you would teach the new student to perform the 90 degrees clockwise rot

ation of the blue preimage to get the red image.

1 answer:

Hitman42 [59]3 years ago

6 0

You would tell him to turn around it’s pretty easy

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Quick!! using y= 5x + 12 find the slope of a parallel line

icang [17]

Answer:

y=5x-10

Step-by-step explanation:

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2 years ago

Read 2 more answers

Find the surface area.

Marysya12 [62]

let's notice, this is a Cube, namely all equal sides, and mind you it has 6 sides, Check the picture below.

$\stackrel{\textit{area of all 6 sides}}{6(9\cdot 9)\implies 486}$

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2 years ago

simplify 5ab+9a-ab-7a and justify each step as associative , distributive, commutative, or additive property.

Vladimir [108]

Answer:

5ab-ab+9a-7a

ab(5-1)+a(9-7)

4ab+2a

a(4b+2)

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3 years ago

A farmer plans to fence a rectangular corral. The diagonal distance from one corner of the corral to the opposite corner is five

garik1379 [7]

Answer:

Length of diagonal is 7.3 yards.

Step-by-step explanation:

Given: The diagonal distance from one corner of the corral to the opposite corner is five yards longer than the width of the corral. The length of the corral is three times the width.

To find: The length of the diagonal of the corral.

Solution: Let the width of the rectangular garden be <em>x</em> yards.

So, the length of the diagonal is $x+5$

width of the rectangular corral is $3x$

We know that the square of the diagonal is sum of the squares of the length and width.

So,

$(3x)^{2} +x^{2} =(x+5)^{2}$

$9x^{2} +x^{2} =x^{2}+10x+25$

$9x^{2}-10x-25=0$

$9x^{2}-10x-25=0$

$x=\frac{-b\pm\sqrt{b^{2} -4ac} }{2a}$

$x=\frac{10\pm\sqrt{(-10)^{2} -4(9)(-25)} }{2(9)}$

$x=\frac{10\pm\sqrt{100}}{18}$

Since, side can't be negative.

$x=\frac{5}{9}+\frac{5}{9}\sqrt{10}$

Now, length of the diagonal is

$5+\frac{5}{9}+\frac{5}{9}\sqrt{10}$

Hence, length of diagonal is 7.3 yards.

4 0

3 years ago

How many significant digits is in 70.00?

julia-pushkina [17]

Going by what I was taught in chemistry, there would only be 1.

3 0

3 years ago