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Reptile [31]
3 years ago
10

SOMEONE PLEASE HELP MATH

Mathematics
2 answers:
klio [65]3 years ago
5 0
Circumference = 2πr
3π=2πr
r=3π÷2π
r=3/2
area of a circle= πr²
=π×(3/2)²
=2.25π
topjm [15]3 years ago
5 0
Circumference = 2πr = 3π
r = 3π/2π
r = 3/2

Area = πr² = 9/4 π = 2.25π

In short, Your Answer would be Option B

Hope this helps!
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Given h(x)=-2x+1,find h(-6)
Vesna [10]

Answer:

h = -11

Step-by-step explanation:

x=-6 so...

2*(-6)+1= -11

h= -11

7 0
3 years ago
I will mark as brainiest
Margaret [11]

If two triangles are similar, then their side lengths are proportional.

RS / JK = RT / JL

5 / x = 4 / 7

4x = 35

x = 35/4 = 8.75

RT / JL = TS / LK

4 / 7 = 6 / (y + 2)

42 = 4(y + 2)

42 = 4y + 4

4y = 38

y = 38/4 = 9.5

LK = 9.5 + 2 = 11.5 cm

JK = x = 8.75

Hope this helps!

8 0
1 year ago
Find slope of line (1,2) and (2,5) <br> Write equation and final answer
sdas [7]
Equation: y = 3x 
Final Answer: 3


3 0
3 years ago
For each of the functions below, indicate whether the function is onto, one-to-one, neither orboth. If the function is not onto
Karo-lina-s [1.5K]

Answer:

f_{1} :Z \rightarrow Z is one to one mapping, it is not onto mapping

Step-by-step explanation:

f_{1} :Z \rightarrow Z\\ f_{1} (x) = x^{3}

f₁(x) is one to one mapping

Let x, y \epsilon Z

f₁(x) = f₁(y):

x₁³ = y₁³

f₁(x) is not onto mapping

Example: If f₁(x) = 7,

x₁³ = 7

x_{1} = \sqrt[3]{7}

x₁ is not an element of Z

f_{1} :Z \rightarrow Z is one to one mapping, it is not onto mapping

5 0
3 years ago
Jimmy collects nickels and dimes. Right now, he has a total of 40 coins in his piggy bank. If there are seven times as many dime
Colt1911 [192]
Number of nickels plus number of dimes equals total number of coins
so
n + d = 40

then they tell us that "there are seven times as many dimes as there are nickels"
this translates to
d = 7n

we then plug that into our first equation
and get
n + 7n = 40

then we solve for n
add like terms
8n = 40

then divide both sides by 8
n = 40/8 = 5

therefore Jimmy has 5 nickels
4 0
3 years ago
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