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loris [4]
3 years ago
13

A circular room has a floor of diameter 590cm. Estimate the 92.2 perimeter of the room in metres​

Mathematics
1 answer:
coldgirl [10]3 years ago
8 0

Answer:

  18.5 m

Step-by-step explanation:

The diameter in meters is 5.90, so the circumference of the room is ...

  C = πd = 5.90π m ≈ 18.5 m

The perimeter of the room is about 18.5 m.

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Rewrite the quadratic function in vertex form.<br> Y=2x^2+4x-1
Fantom [35]

Answer:

\large\boxed{y=2(x+1)^2-3}

Step-by-step explanation:

The vertex form of an equation of a parabola:

y=a(x-h)^2+k

(h, k) - vertex

We have

y=2x^2+4x-1=2\left(x^2+2x-\dfrac{1}{2}\right)

We must use the formula: (a+b)^2=a^2+2ab+b^2\qquad(*)

2\left(x^2+2(x)(1)-\dfrac{1}{2}\right)=2\bigg(\underbrace{x^2+2(x)(1)+1^2}_{(*)}-1^2-\dfrac{1}{2}\bigg)\\\\=2\left((x+1)^2-1-\dfrac{1}{2}\right)=2\left((x+1)^2-\dfrac{3}{2}\right)

Use the distributive formula a(b + c) = ab + ac

2(x+1)^2+2\left(-\dfrac{3}{2}\right)=2(x+1)^2-3

5 0
2 years ago
(4m+3)9+6m how do i solve it?
alexandr402 [8]
36m+27+6m=0### 30m=27###m=9/10
4 0
3 years ago
Kim has worked in the tech industry for some time and would like to start consulting. In opening her new business, she will need
zimovet [89]
Cost of 3 laptops
3×546.78
=1,640.34
Cost of 2 desktop computer
2×1,255.99
=2,511.98
Cost of fax machine
125.99
Total cost
(1,640.34+2,511.98+125.99)
=4,278.31
So Kim will need an additional 778.31 to start her business
4,278.31−3,500
=778.31
7 0
3 years ago
Read 2 more answers
In one soccer season, a goalie saved 150 out of
Maru [420]

Answer:

0.81 (rounded to the nearest hundredth) & 81%

Step-by-step explanation:

150/185 = 30/37 ≈ 0.81 (rounded to the nearest hundredth)

0.81 is 81%

7 0
2 years ago
Word problem
Vlad [161]

Answer:

p=2

Step-by-step explanation:

4.05p+14.40=4.50(p+3)          < equation

4.05p+14.40=4.50p+13.50     < multiply

14.40=.45p+13.50                   < subtract

.9=.45p                                    < subtract

2=p                                          < divide

5 0
3 years ago
Read 2 more answers
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