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borishaifa [10]
4 years ago
7

Three times as many robinsas cardinals visited a bird feeder. If a total of 20 robin and cardinals visited the feeder, how many

were robins
Mathematics
1 answer:
Agata [3.3K]4 years ago
4 0
X=# of cardinals
3 times as many robins as cardinals visited the feeder, so # of robins=3x
robins+cardinals=20, so x+3x=20
4x=20
x=5 cardinals
20-x=15 robins
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the graph of f(x) = 2x 4 shifts five units to the right when it is replaced with the graph of f(x) = 2x − k. what is the value o
vekshin1
F(x) = 2x + 4

f(x-5) shifts (fx) five units to the right, then

f(x-5) = 2(x-5) + 4 = 2x - k

2x - 10 + 4 = 2x - k

k = 6
3 0
3 years ago
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Pls answer the pic below
Mice21 [21]

Answer:

B. 6

Step-by-step explanation:

the median is the middle of the set of numbers so the median of crunchy pb is 51 and the median of creamy is 45 so the difference between them is 51-45= 6

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3 years ago
Simplify:<br><br><br>4(r + 1) + 3r<br><br> A. 4r + 4<br> B. 5r + 1<br> C. 7r + 1<br> D. 7r + 4
klasskru [66]

Answer:

look in the explanation, it is in there

Step-by-step explanation:

i don't know if you are distributing or just using PEMDAS .

if you are distributing then: do in the equation 4(r + 1) + 3r.. do 4 x r and 4 x 1 , now you have 4r + 4 + 3r

                        7r +4

                      is what i got!

If you are doing PEMDAS then: first you do what is inside the perenthisis ()

4(r + 1) +3r changes into

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4r + 3r, then if you are using like terms you would add them

7r

i hope this helps you out!

6 0
3 years ago
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Find the circumference of the larger circle if the area of one of the smaller circles is 48 pi in^2.
notsponge [240]

Answer:

C. 16√3π in.

Step-by-step explanation:

Circumference of a circle = 2πr where

r is the radius of the circle.

Given the area of one of the smaller circle to be 48π in², we can get the radius of one of the smaller circle.

If A = πr²

48π = πr²

r² = 48

r = √48 in

The radius of one of the smaller circle is √48.

To get the circumference of the larger circle, we need the radius of the larger circle. The radius R of the larger circle will be equivalent to the diameter (2r) of one of the smaller circle.

R = 2r

R = 2√48 inches

Since C = 2πR

C = 2π(2√48)

C = 4√48π in

C = 4(√16×3)π in

C = 4(4√3)π in

C = 16√3π in

Thw circumference of the larger circle is 16√3π in.

3 0
3 years ago
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Please help 100 points ​
muminat

Answer:

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Step-by-step explanation:

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3 years ago
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