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vladimir2022 [97]
3 years ago
15

A painter has finished painting 45% of a really long fence. If she has painted 90 feet so far, how long is the entire fence?

Mathematics
1 answer:
frozen [14]3 years ago
6 0

Answer:

90/45%=200

the entire fence is 200

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Help pls l need some help​
blagie [28]
The correct answer is C, 6/7
7 0
3 years ago
Parabola passes through the points (0,5), (1,4), and (2,5). What function does the graph represent?
AfilCa [17]

Answer:

x^2 - 2x + 5 = 0.

Step-by-step explanation:

The (0, 5) is the point where the parabola passes through the y axis (where x = 0), so we can write the equation as

y = ax^2 + bx + 5   where a and b are constants to be found.

Also, since (1, 4) and (2, 5) are points on the curve, substituting, we have the system:

a(1)^2 + 1b + 5 = 4

a(2)^2 + 2b + 5 = 5

Simplify these 2 equations:

a  + b  =  -1  .................(1)

4a + 2b = 0..................(2)

Multiply the first equation by -2:

-2a - 2b = 2 .................(3)

Add (2) + (3):

2a = 2

a = 1.

Substitute a = 1 into (2):-

4*1 + 2b = 0

2b = -4

b = -2.

7 0
3 years ago
Please help asap!!!!
gladu [14]

Answer:

J: x - 2y = -8

Step-by-step explanation:

All you have to do is plug in x or y as 0 for the y-intercept and the x-intercept, respectively. But, for these specific equations, looking at the constant when y isn't multiplied by any number but 1 will show the y-intercept. (e.g. 2x + y = -12, -12 is the y-intercept, 2x - y = -20 -> -2x + y = 20, 20 is the y-intercept)

F: y-intercept = -12 (incorrect)

G: y-intercept = 0 (incorrect)

H: y-intercept = 20 (incorrect)

J: y-intercept = 4 (correct)

8 0
3 years ago
Don't get this question
solniwko [45]

Answer:

17 and 18

Step-by-step explanation:

Writing every 2 digit number gives us :

10-99 including 10 and 99

For the first one we are looking for numbers where the number 3 appears only once so 33 would be invalid.

13,23,30,31,32,34,35,36,37,38,39,43,53,63,73,83,93

There are 17 2-digit numbers that have 3 exactly once

For the second one we are looking for number where the number 3 appears a minimum of once so 33 would be valid :

13,23,30,31,32,33,34,35,36,37,38,39,43,53,63,73,83,93

There are 18 2-digit numbers that have 3 at least once

Hope this helped and have a good day

5 0
2 years ago
What is the simplified form of the expression?
sineoko [7]
 The answer is:  10 x¹³ y¹⁰  . 
__________________________________________________________

1x^8 *  2y^(10) * 5x^5 = 

1* 2* 5 * x^8 * x^5 * y^(10) = 

10 * x^(8+5) * y^(10) =

10 * x^(13) * y^(10) = 10 x^(13) y^10 ;  write as: 
_______________________________________________
          10 x¹³ y¹<span>⁰ .
<span>______________________________________________________</span></span>
6 0
3 years ago
Read 2 more answers
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