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3 years ago

7

Identify two pairs of vertical angles.*

1 answer:

xxMikexx [17]3 years ago

3 0

Answer- A

1 and 4, 6 and 7

Explanation- vertical angles are each of the pairs of opposite angles made by two intersecting lines.

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Which is the correct classification for the triangle?

kondaur [170]

Acute means that has 3 angles less than 90 degrees

obtuse means at lesat 1 angle is more than 90 degrees

right triangle means 1 angle=90 degrees

s we solve for thierd angle
all angles add to 180 so
35+45+x=180
80+x=180
subtract 80
x=100
100>90

obtuse angle is answer

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3 years ago

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Length of a rectangle is 5 cm longer than the width. Four squares are constructed outside the rectangle such that each of the sq

Arte-miy333 [17]

Answer:

The perimeter of rectangle is $18\ cm$

Step-by-step explanation:

Let

x------> the length of rectangle

y----> the width of rectangle

we know that

The area of the constructed figure is equal to

$A=xy+2x^{2} +2y^{2}\\A=120\ cm^{2}$

so

$120=xy+2x^{2} +2y^{2}$ -----> equation A

$x=y+5$ -----> equation B

substitute equation B in equation A

$120=y(y+5)+2(y+5)^{2} +2y^{2}\\120=y^{2}+5y+2(y^{2}+10y+25)+2y^{2}\\120=y^{2}+5y+2y^{2}+20y+50+2y^{2}\\5y^{2}+25y+50-120=0\\5y^{2}+25y-70=0$

using a graphing calculator to resolve the quadratic equation

the solution is

$y=2\ cm$

Find the value of x

$x=2+5=7\ cm$

Find the perimeter of rectangle

The perimeter of rectangle is equal to

$P=2(x+y)\\P=2(7+2)=18\ cm$

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4 years ago

Which of the following will be equal for a cuboid and a pyramid with a triangular base?

liberstina [14]

Answer:

C cause it is both 4 edges

Step-by-step explanation:

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It is negative because the plot is going down not up

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3 years ago

Mike's age is five more than three times his sister's age. Mike is seventeen years old.

Agata [3.3K]

3x+5=17 that's the answer

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4 years ago

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