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3 years ago

Q # 17 please solve the figures

Mathematics

1 answer:

Juliette [100K]3 years ago

6 0

Answer: First option:
Angle C is congruent with angle X, angle D is congruent with angle Y, angle A is congruent with angle Z

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A sector has angle 2.5 radians and perimeter of 18cm. find the radius of the sector

babunello [35]

Answer:

4 cm

Step-by-step explanation:

Perimeter = 18cm

θ = 2.5 radian

s = rθ, s = Arc length

Perimeter of Sector, P = arc length, s + 2r

Perimeter = rθ + 2r

r = Radius

18cm = r(2.5) + 2r

18cm = 2.5r + 2r

18cm = 4.5r

r = 18 /4.5

r = 4

8 0

2 years ago

A building with a cost of $1,800,000 has an estimated residual value of $125,000, has an estimated useful life of 40 years, and

nika2105 [10]

Answer:

$41,875

<u>Extra</u>

a. $17,250 [($780,000 – $90,000) ÷ 40]

b. $366,000 [$780,000 – ($17,250 × 24 yrs.)]

c. $29,600 [($366,000 – $70,000) ÷ 10 yrs.]

Step-by-step explanation:

Step 1: Determine the cost of the asset

$1,800,000$

Step 2: Subtract the estimated salvage value of the asset from the cost of the asset to get the total depreciable amount

$1,800,000 - 125,000$

Step 3: Determine the useful life of the asset

$40$

Step 4: Divide the sum of step (2) by the number arrived at in step (3) to get the annual depreciation amount

$$41,875$

5 0

3 years ago

What number divided by 3 gives 12 as the result? A. -36 B. -4 С. 4 D. 36

rodikova [14]

The answer is 36 all you do is divide the answer choices by 3 to get your answer

3 0

3 years ago

a dragonfly can beat its wing 30 times per second. write an equation in slope intercept from that shows the relationship between

Lemur [1.5K]

Let Y be amount of times beat
let X be amount of time in seconds
the slope intercept form is y=mx+b
fill in the variables: y=30x
The correct answer is y=30x

4 0

2 years ago

Solve for the radius

Mnenie [13.5K]

To solve for the radius(r), you need to isolate/get the radius by itself in the equation:

$A=\frac{1}{2} \pi r^2$ Multiply the inverse of 1/2, which is 2/1 or 2 on both sides

$(2)A=(2)\frac{1}{2} \pi r^2$

2A = πr² Divide π on both sides

$\frac{2A}{\pi } =\frac{\pi r^2}{\pi }$

$\frac{2A}{\pi } =r^2$ Now square root √ both sides to get "r" by itself

$\sqrt{\frac{2A}{\pi } } =\sqrt{r^2}$

$\sqrt{\frac{2A}{\pi } } =r$ Your answer is A

7 0

2 years ago