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Akimi4 [234]
2 years ago
14

Samuel wants to buy cookies for his friend. The diameter of a cookie is 20 inches. What is the cookies area? Round to the neares

t hundredth
Mathematics
1 answer:
olya-2409 [2.1K]2 years ago
7 0

Answer:

314.16

Step-by-step explanation:

Area=πr2

d=2r

Solving for Area

A=1

4πd2=1

4·π·202≈314.15927

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3.49 hectograms equals how many decigrams​
klasskru [66]

Answer:

3490 decigram

Step-by-step explanation:

1 \:hectogram = 1000 \:decigram\\\\3.49\: hectogram = x\: decigram\\\\Cross\:Muliply\\\\x = 3.49\times 1000\\\\x = 3490 \:decigram

8 0
3 years ago
Peter waters his lawn every 4 days. Amy waters her lawn every 3 days and Mark waters his lawn every 6 days. If they are all wate
ch4aika [34]

Answer:

A) 12th day

Step-by-step explanation:

Firn the lcm of 3, 4 and 6

This is 12

So it is a)12 day

6 0
2 years ago
Read 2 more answers
I'm stuck on this homework question. I forgot the formula to find the side. This is 9th grade geometry.
dexar [7]

Answer:

x = 2root(22)

see image.

Step-by-step explanation:

The triangle shown is one big triangle cut into two more smaller triangles: one medium-sized and one smaller.

ALL THREE TRIANGLES ARE SIMILAR BY AA.

Set the two smaller triangles up so you can see the corresponding sides. x is the short leg in one triangle and it is the long leg in the smallest triangle. Set up a proportion.

22/x = x/4

crossmultiply

x^2 = 22•4

x^2 = 88

square root both sides.

x = sqroot(88)

x = 2sqroot(22)

see image.

3 0
2 years ago
Is -9 a rational or irrational number
daser333 [38]
-9 is a rattional number because it is an integer and it can be squared.
7 0
3 years ago
How many solutions does the system have?
amid [387]

Answer:

A; infinitely many solutions

Step-by-step explanation:

first, let's simplify the first equation to make it simpler.

divide both sides by 5

y=3x-8

new system

y=3x-8

y=3x-8

as you can see, they are the same.

not mandatory but useful!⬇⬇⬇⬇

just to be more clear, let's substitute them. since they're both already in y=, we can make them both set to each other.

3x-8=3x-8

add 8 to both sides; subtract 3x from one side

0=0

the answer is A, Infinitely many solutions.

hope this helped <3333333

8 0
3 years ago
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