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Paul [167]
3 years ago
13

A circle has a radius of 6 cm. What is its area?

Mathematics
2 answers:
Tems11 [23]3 years ago
7 0

Answer: A=113.1cm

Step-by-step explanation:

malfutka [58]3 years ago
7 0

Answer:113.14

Step-by-step explanation:

π=22/7

Area=πr2

Area=22/7×(6)2

22/7×36=113.14

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Dilution Problem
LUCKY_DIMON [66]

Answer:

  76.7 liters

Step-by-step explanation:

You have ...

  C1×V1 = C2×V2

so ...

  V2 = V1×(C1/C2) = (115 L)×(14/21) = 76 2/3 L

  V2 ≈ 76.7 L

4 0
3 years ago
Which are removable discontinuities?
Afina-wow [57]

Answer:

C

Step-by-step explanation:

Got it right on eng

4 0
3 years ago
Tickets to the school play are $5.00 for adults and $3.50 for students. If the total value of all the tickets sold was $2517.50
Irina-Kira [14]
x-\ adults\\
y-\ students\\\\  \left \{ {{5x+3.50y=2517.5} \atop {x+100=y}} \right.\\\\
5x+3.5(x+100)=2517.5\\\\
5x+3.5x+350=2517.5\ \ \ | subtract\ 350\\\\
8.5x= 2167,5\ \ \ | divide\ by\ 8.5\\\\
x=255\\\\
y=355\\\\
There\ were\ 355\ student\ tickets\ and\ 255\ adult\ tickets.
6 0
3 years ago
Marine biologists have been studying the effects of acidification of the oceans on weights of male baluga whales in the Arctic O
PSYCHO15rus [73]

Answer:

c. 61.25 kg

Step-by-step explanation:

The margin of error in estimating the true mean weight of male baluga whales in the Artic Ocean.

a. 15.31 kg

b. 51.40 kg

c. 61.25 kg

d. 80.49 kg

Margin of Error Formula= z × Standard deviation/√n

95% confidence interval = 1.96

Standard deviation = 125kg

n = 16 samples

Margin of error= 1.96 × 125/√16

= 1.96 × 125/4

= 245/4

= 61.25kg

The margin of error in estimating the true mean weight of male baluga whales in the Artic Ocean is 61.25kg

6 0
3 years ago
In the ratio 3:7 Zoe received £24 how much did Hannah receive last week
Ludmilka [50]
<span>ratio 3:7

Zoe received £24 (3 x 8 = 24)

</span>Hannah 7 x 8 = £56
3 0
3 years ago
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