I really need help in math

Mathematics

1 answer:

Klio2033 [76]2 years ago

7 0

Y=3 means go up 3 then over three over and over then find where it lands on the chart. so first one would be 3. in the second one you go over 1 up 4. first answer would be 4.

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Triangle ABC has side length of 14, 8 and 10.4 what are the possible side lengths of a triangle DEF if ABC is similar to DEF

defon

Answer:

DEF can have possible side lengths of 28, 16, 20.8

Step-by-step explanation:

Triangle Similarity

If the three sides of two triangles have the same proportion, the triangles are similar (SSS theorem).

Triangle ABC has side lengths of 14, 8, and 10.4.

Any other triangle whose side lengths are the same lengths of ABC multiplied by a constant scale factor is similar to ABC.

For example, select scale factor 2. Thus, the triangle of side lengths 2*14=28, 2*8=16, and 2*10.4=20.8 is similar:

DEF can have possible side lengths of 28, 16, 20.8

Any other scale factor will do.

8 0

2 years ago

WILL GIVE BRAINLIEST FOR ANSWER Find the area of the shaded polygons.

trapecia [35]

Answer:

7.74 cm2

Step-by-step explanation:

We need to find the area of both the square and the circle and then subtract the two. Inscribed means draw within a figure so as to touch in as many places as possible. So the circle is drawn inside the square. The opposite is circumscribed, meaning drawn outside.

Asquare = s2 = 36 cm2 so the side is 6 cm

6 cm is also the diameter of the circle and thus the radius is 3 cm

A circle = πr2 = 3.14 * 32 = 28.28 cm2

The resulting difference is 7.74 cm2

5 0

3 years ago

5.5% tax on a $309.95 purchase

oksano4ka [1.4K]

To find a 5.5% tax on $309.95, you need to multiply them together.

5.5% x 309.9

= 0.55 x 309.9

= 170.445