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2 years ago

Find the area of the triangle in blocks (b).

Mathematics

2 answers:

Anna11 [10]2 years ago

7 0

I’ve attached a photo of how to do problems like these!

olganol [36]2 years ago

3 0

Answer:

Step-by-step explanation:

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The top of a kitchen table measures 160 cm by 90 cm. A beetle walks diagonally across the table. How far does it walk (to the cl

seropon [69]

Answer:

c²=a²+b²

Step-by-step explanation:

this is actually really easy , and it wouldn´t hurt if you can give me a thanks and mark as brainliest i never got it before :)

4 0

3 years ago

Solve for x<br><br> 60<br> 50<br> 40<br> 30

Otrada [13]

Answer:

40. C. 40
41. B. ∠ACE ≅ ∠ECB

Step-by-step explanation:

The triangle with angle x is isosceles as two sides marked as same.

The two angles opposite to equal sides measure x.

<u>Sum of interior angles of the triangle is:</u>

100 + 2*x = 180
2x = 180 - 100
2x = 80
x = 40

Common angle of the two triangles is angle C.

Correct choice is B

3 0

2 years ago

What is the surface area of the figure? Can you please explain how to get it

goldenfox [79]

Answer:

The surface area of the solid = 582 feet²

Step-by-step explanation:

* At first lets study the solid

- it consists of 8 faces

- One base with dimensions 15 and 4 feet (1)

- Two side faces L-shaped with dimensions 15 , 4 , 9 ad 6 feet (2)

- One side face with dimensions 4 and 15 feet (3)

- One side face with dimensions 9 and 4 feet (4)

- One side face with dimensions 6 and 4 feet (5)

- One top base with dimensions 9 and 4 feet (6)

- One top base with dimensions 6 and 4 feet (7)

* Now lets find the area of the faces

- A(1) = 15 × 4 = 60 feet² ⇒ rectangular face

* We can find the area of L-shaped by this way

∵ Area of the square face = 15 × 15 = 225 feet²

∵ Area of the small rectangle = 9 × (15 - 9) = 54 feet²

- Lets subtract the area of the small rectangle from the area of

the square, to find the area of the L-shaped

- A(2) = 2 ( 225 - 54) = 2 (171) = 342 feet²

- A(3) = 4 × 15 = 60 feet² ⇒ rectangular face

- A(4) = 9 × 4 = 36 feet² ⇒ rectangular face

- A(5) = 6 × 4 = 24 feet² ⇒ rectangular face

- A(6) = 9 × 4 = 36 feet² ⇒ rectangular face

- A(7) = 6 × 4 = 24 feet² ⇒ rectangular face

* Lets add all of these areas to find the surface area of the solid

∴ The S.A = 60 + 342 + 60 + 36 + 24 + 36 + 24 = 582 feet²

5 0

2 years ago

Factor by Grouping.

Komok [63]

Answer:

The ac product of $35x^2+41x+12$ is <u>420</u>.

The factors of the ac product that add to 41 are <u>20</u> and <u>21</u>.

$35x^2+41x+12 =$ $(7x+4)(5x+3)$

Step-by-step explanation:

1) The general form of a quadratic is $ax^2 + bx + c$ . Hence, multiplying 35 by 12 gives you the product of ac, which is 420.

2) We need to find two numbers that multiply to 420 and add up to 41 <u>simultaneously</u>. If we pull out the factors of 420, two of them will be 20 and 21, which multiply to 420 as well as add up to 41.

3) Write $41x$ as a sum.

$35x^2+20x+21x+12$

Now, we can factor them out by grouping.

$35x^2+20x+21x+12\\5x(7x+4)+3(7x+4)$

Since, $7x +4$ is common in both of the factors, we only take one of the $7x+4$ along with $5x$ and $3$ .

$(7x+4)(5x+3)$

6 0

2 years ago

Read 2 more answers

I have "Write an equation for each problem. Then solve the equation.

Umnica [9.8K]

Answer:

Step-by-step explanation:

if the opposition of a number is equal to -9.

hence the expression above....

6 0

2 years ago