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Digiron [165]
3 years ago
13

เป็น

Mathematics
1 answer:
Tomtit [17]3 years ago
8 0

Answer:

Step-by-step explanation:

\int\limits^a_b {x} \, dx  \lim_{n \to \infty} a_n \neq \geq x^{2} \\ \leq⇄⇅⇵⇔ω∈ФπΔ≅≡β·∛

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Help solving this math
9966 [12]

Answer:

  1. 24 cm²
  2. 6400 -1600π ≈ 1373.45 square units

Step-by-step explanation:

1. You can look at this several ways.

It can be considered to be a stack of 1+2+3 = 6 squares that are 2 cm on a side, so have a total area of 6 × (2 cm)² = 24 cm².

You can lop off one of the squares sticking out and put it into the empty corner to form a 6 cm by 4 cm rectangle with an area of (6 cm)(4 cm) = 24 cm².

You can consider it to be a 6 cm square with 3 squares cut out of it that are 2 cm on a side: (6 cm)² -3(2 cm)² = (36 -12) cm² = 24 cm².

__

2. The shaded area is the difference in areas of a square 80 units on a side and a circle of 40 units radius. If we let d represent the side dimension of the square, then the area formulas are ...

  Square area = d²

  Circle area = π(d/2)²

So the difference area is ...

  shaded area = d² -(π/4)d² = d²(1 -π/4)

For d=80, the shaded area is ...

  shaded area = 80²(1 -π/4) = 6400 -1600π ≈ 1373.45 square units

6 0
3 years ago
How do I solve 2x+x(x+6)
Mrac [35]

Step-by-step explanation:

Maths is simple

2x + x(x + 6)

expand the bracket

2x + {x}^{2}  + 6x

then you add like terms 2x to 6x givind you

{x}^{2}  + 8x

this is how you solve it

i have to get the right question

this is simplified

and also been a expanded

7 0
1 year ago
Read 2 more answers
Help I do not understand this math
Rina8888 [55]

Answer:

(Sorry, I only remember how to do 1 through 7)

1. -8.86

2. 17.5

3. -6.12

4. 1.66

5. 11/24

6. 4/5

7. 14

Step-by-step explanation:

1. -5.51-3.35=-8.86

2. -59.5/-3.4=17.5

3.0.85*-7.2=-6.12

4. -0.59+2.25=1.66 (The double negatives become positive)

5. 3/8+ 1/12=11/24

6. (-24/25)/(-6/5)=4/5

7. 28/2=14

6 0
3 years ago
Read 2 more answers
Solve for x= 4x+18°+5x°=90°
pishuonlain [190]

Answer: x = 8

<u>Step-by-step explanation:</u>

4x + 18  +  5x  =  90

9x + 18 = 90             <em>Added like terms</em>

9x = 72                    <em>Subtracted 18 from both sides</em>

x = 8                       <em>Divided both sides by 9</em>


BONUS: The sum of these two angles is 90°, which means these angle are complementary.

8 0
3 years ago
Find the value of the expressions below for X=10 X whith the 2ed power -2(X+5)
Elena-2011 [213]
The answer is -30. 

Why:  If x = 10, then you fill in -2(10 + 5). Do -2 times 10 and -2 times 5. The new equations is (-20 + -10). When you add two negatives, the answer will be a negative so the answer is -30. 

Hope this helps, if you need any further help or questions on this, message me! :)
8 0
3 years ago
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