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3 years ago

SOMEONE HELP PLZ HELP HELP

Mathematics

1 answer:

NISA [10]3 years ago

6 0

13 units....................YES

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Find the area of the triangle below.

gulaghasi [49]

Answer:

Gọi AH là đường cao kẻ từ A đến BC

Xét tam giác AHC vuông tại H

Suy ra AH = HC. cotA= 9.cot35° = 12,9

Xét tam giác AHB vuông tại H

Suy ra BH = AH.tanA = 12,9.tan61°=23,37

Ta có BC= HC+ HB= 9+23,27 =32,27

Diện tích tam giác ABC = 1/2 × AH ×BC= 1/2 ×12,9×32,27=208,1415

8 0

3 years ago

Any face that is not a base

Ann [662]

Answer:

In Mathematics Geometry,<em> lateral face</em> is said be the side of a 3D-figure in that is not a base.

Please check the attached figure to visual the concept.

Step-by-step explanation:

In Mathematics Geometry,<em> lateral face</em> is said be the side of a 3D-figure in that is not a base.

The faces in in a prism or pyramid which are not bases are basically the lateral faces.

For example, the lateral faces are basically parallelograms in Triangular prism which are not the bases.

Please check the attached figure to visual the concept.

7 0

3 years ago

What’s 3/6 as a mixed number

earnstyle [38]

0.5

Hope this helped!!

7 0

3 years ago

Read 2 more answers

Please help i have no clue

kozerog [31]

Answer:

Step-by-step explanation:

Question (1)

x² + 10x + 12

= x² + 2(5x) + 5² - 5² + 12

= [x² + 2(5x) + 5²] - 5² + 12

= (x + 5)² - 25 + 12 [Since, a² + 2ab + b² = (a + b)²]

= (x + 5)² - 13

Question (2)

y² - 6y - 15

= y² - 2(3y) - 15

= y² - 2(3y) + 3² - 3² - 15

= [y² - 2(3y) + 3²] - 3² - 15 [Since, a² - 2ab + b² = (a - b)²]

= (y - 3)² - 3²- 15

= (y - 3)² - 9 - 15

= (y - 3)² - 24

6 0

3 years ago

Scott’s bank account showed a balance of $750 on Sunday. During the next five days, he made one deposit of $140 and numerous wit

musickatia [10]

Answer:

Step-by-step explanation:

5 0

3 years ago