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Evgen [1.6K]
3 years ago
5

1:X = X:81 what number can replace X?

Mathematics
1 answer:
anygoal [31]3 years ago
7 0

Multiply 1/x = x/81 by 81x and you get

... 81 = x²

Taking the square root gives

... x = ±9

Either 9 or -9 can replace X to make the proportion statement true.

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Find f(2) if f(x)=2x+1
IgorLugansk [536]
Answer: 5

Work Shown:
f(x) = 2x+1
f(2) = 2*2+1 ... x has been replaced with 2
f(2) = 4+1
f(2) = 5
The input is x = 2. The output is y = 5. 
3 0
3 years ago
Which system of equations is represented by the graph?
Tom [10]

Answer:

C

Step-by-step explanation:

y=x is a line that has slope 1 meaning it go ups (increases) from left to right.

So that puts us at choice A or C.

Both A or C differ by the numerator for the other function.

We can find the x-intercept for A and C by setting the numerator equal to 0 and solving for x.

Let's do that:

A:  -x-10=0                           C.  -x+10=0

     -x=10                                    -x=-10

      x=-10                                    x=10

A says x-intercept -10

C says x-intercept 10

Your graph intercepts the x-axis at 10 so the answer is C.

4 0
3 years ago
Read 2 more answers
Shop sells bagles for 5 per dozen how much bagles can you buy for 50
spayn [35]
120 Bagels
Explanation:
if you get 12 bagels for 5 dollars, and your wondering how many you’d get for 50 dollars, 5 times 10 is 50 and 10 times 12 is 120. That doesn’t make the most sense but yes
3 0
3 years ago
The gas tank of priya pontoon boat can hold 5 gallons it is completely empty Oriya needs a full tank for the days activities she
erma4kov [3.2K]
1638595973726949577273
7 0
2 years ago
Plz help.. btw this is 7th grade math. (22 pts.)
belka [17]

Answer:

He needs 4 1/3 buckets of fish.

Step-by-step explanation:

140 - 75 = 65 pounds of fish left to eat

15x = 65

x = 65 / 15

x = 4  1/3 buckets of fish left to eat


6 0
3 years ago
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