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brilliants [131]
3 years ago
5

The radius of a circle is 1 centimeter. What is the area of a sector bounded by a 90 arc

Mathematics
2 answers:
tensa zangetsu [6.8K]3 years ago
4 0

<em>Given</em>

<em>radius </em><em>(</em><em>r) </em><em> </em><em>=</em><em> </em><em>1</em><em> </em><em>cm</em>

<em>thita</em><em> </em><em>=</em><em> </em><em>9</em><em>0</em><em>°</em>

<em>We </em><em>have </em><em>the </em><em>formula </em><em>to </em><em>calculate </em><em>area </em><em>of </em><em>sector </em><em>which </em><em>is</em>

<em>Area </em><em>=</em><em> </em><em>(</em><em>thita/</em><em> </em><em>3</em><em>6</em><em>0</em><em>°</em><em>)</em><em> </em><em>π</em><em>r²</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>=</em><em> </em><em>9</em><em>0</em><em>°</em><em>/</em><em>3</em><em>6</em><em>0</em><em>°</em><em> </em><em>*</em><em> </em><em>3</em><em>.</em><em>1</em><em>4</em><em> </em><em>*</em><em> </em><em>1</em><em>²</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>=</em><em> </em><em>0</em><em>.</em><em>2</em><em>5</em><em> </em><em>*</em><em> </em><em>3</em><em>.</em><em>1</em><em>4</em><em> </em><em>*</em><em> </em><em>1</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>=</em><em> </em><em>0</em><em>.</em><em>7</em><em>8</em><em>5</em><em> </em><em>cm²</em>

MrRissso [65]3 years ago
3 0

Answer:

1/4nr is the right answer i took the test

Step-by-step explanation:

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Given an actual demand of 64, a previous forecast of 59, and an of .3, what would the forecast for the next period be using simp
BartSMP [9]

Answer: 60.5

Step-by-step explanation:

The forecast for the next period using the simple exponential smoothing method is given by:

D\times \alpha+F(1-\alpha) , where D= actual demand for the recent period, \alpha= smoothing factor, F= forecast for the recent period .

Given: D= 64, \alpha=0.34 , F= 59

The forecast for the next period  = 64\times0.3+59(1-0.3)

\\\\= 64\times0.3+59\times0.7\\\\=19.2+41.3\\\\=60.5

Hence, the forecast for the next period = 60.5

5 0
3 years ago
Nathan and Olivia are saving money for school supplies. Nathan saves $2 per week and already has $30 in his bank. Olivia saves $
melomori [17]

Answer:

Nathan: 2x+30

Olivia: 4x+15

Step-by-step explanation:

x is the number of weeks

Nathans account is as follows

2x+30

(2 dollars a week plus the 30 dollars already there)

Olivia's account is as follows

4x+15

(4 dollars per week plus the 15 already in there)

4 0
2 years ago
2. Find the distance between (-2,1) and (3,4).
lakkis [162]
Math Find the Distance Between Two Points (3,4) , (-2,1)
(
3
,
4
)
(
3
,
4
)
,
(
−
2
,
1
)
(
-
2
,
1
)
Use the distance formula to determine the distance between the two points.
Distance
=
√
(
x
2
−
x
1
)
2
+
(
y
2
−
y
1
)
2
Distance
=
(
x
2
-
x
1
)
2
+
(
y
2
-
y
1
)
2
Substitute the actual values of the points into the distance formula.
√
(
(
−
2
)
−
3
)
2
+
(
1
−
4
)
2
(
(
-
2
)
-
3
)
2
+
(
1
-
4
)
2
Simplify.
Tap for more steps...
√
34
34
The result can be shown in multiple forms.
Exact Form:
√
34
34
Decimal Form:
5.83095189
…
3 0
3 years ago
Read 2 more answers
PLZ HELP ASAP!!! What is the area of sector DEF in terms of pi ?<br> 120°<br> 3 cm<br> E
Serjik [45]

Answer:

Area of the sector : D.

3π cm²

6 0
2 years ago
Pencils cost 25p each<br>Mr Smith spends £15 on pencils <br>Work out the number of pencils he gets ​
krek1111 [17]

Answer:

Convert £15 to pence

Hence £15.00p = 1500p

Divide 1500p by 25p

Hence

25)

1500( = 60

150

_____

= 0 + 0

Anothrt way

1500/25

Cancel down by '5'

300 / 5

Cancel down by '5' again

60/1 = 60

Hence 60 pencils were purchased.

PLZ I HOPE THIS HELPS YOU, PLZ MARK BRAINLYIEST

5 0
3 years ago
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