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3 years ago

Please help fast! Which pairs of polygons are similar? Select each correct answer.

Mathematics

2 answers:

katrin2010 [14]3 years ago

7 0

Answer:

On the first page: The two trapezoids on the left are similar.

On the second page: The two rectangles on the right are similar.

Step-by-step explanation:

Similar shapes have corresponding sides in a constant proportion.

The trapezoids on the left of the first page have a scale factor of 2.5 between the smaller and larger trapezoid between all corresponding sides, therefore are similar.

The rectangles on the right of the second page have a scale factor of 1.6 between the smaller and larger rectangle between all corresponding sides, therefore are similar.

Tcecarenko [31]3 years ago

5 0

Answer:

rectangle

Step-by-step explanation:

sana po makatulong ako

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If an object takes 7 second to fall to the ground, what was its initial height? Show your work.

Verdich [7]

Answer:240.1 m

Step-by-step explanation:

We are given the following equation that models the the time it takes to an object to fall to the ground:

$t_{(H)}=\sqrt{\frac{2H}{g}}$

Where:

$t_{(H)}=7 s$ is the time it takes to the object to fall to the ground

$H$ is the object's initial height

$g=9.8 m/s^{2}$ is the acceleration due gravity

Isolating $H$ :

$t^{2}=(\sqrt{\frac{2H}{g}})^{2}$

$t^{2}=\frac{2H}{g}}$

$H=\frac{t^{2}g}{2}$

Solving with the given data:

$H=\frac{(7 s)^{2}(9.8 m/s^{2})}{2}$

$H=240.1 m$ This is the initial height

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3 years ago

3x+2y=20.5<br> x=?<br> y=?<br> I will mark Brainliest

EleoNora [17]

Answer:

X=6.833-0.66y

Y=10.25-1.5x

Step-by-step explanation:

Make each the subject

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4 years ago

Find the common ratio.

statuscvo [17]

Answer:

324, -972, 2916

Step-by-step explanation:

Divide a number by the previous number to find r.

r = -12/4 = -3

Multiply a number by r to find the next number.

-108 * (-3) = 324

324 * (-3) = -972

-972 * (-3) = 2916

Answer: 324, -972, 2916

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3 years ago

Read 2 more answers

Pls help no one will A student worked the problem 35.8 times 9.3. the student answer was 3,329.4 use estimation to check weather

Inga [223]

Well the way that I rounded this was up so I rounded 9.3-10 and 35.8-40 then I took 40*10=400 (mental math (approximation)) and because 400<3,329.4 this answer is highly unreasonable.

Enjoy!=)

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3 years ago

A circle with radius of 1 cm sits inside a 3m x 4 cm rectangle

BlackZzzverrR [31]

Answer:

8.86 cm²

Step-by-step explanation:

Rectangle - Circle

(3 × 4) - (3.14 × 1²)

12 - 3.14

8.86

4 0

3 years ago