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Montano1993 [528]
3 years ago
15

Please help with my brother's math homework. Thank you.

Mathematics
1 answer:
Paha777 [63]3 years ago
6 0

Answer:

Dividing two fractions is the same as multiplying the first fraction by the reciprocal of the second fraction.

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For f (x)= -x + 8, what is the value of x for which f(x) = 9?
Elina [12.6K]

Answer:

x=-1

Step-by-step explanation:

f (x)= -x + 8

Let f(x) = 9

9 = -x+8

Subtract 8 from each side

9-8 = -x+8-8

1 = -x

Multiply each side by -1

-1 = x

8 0
3 years ago
Audreys Candy Store sold 22 individual pounds of jelly beans, one kind at $3.87 per pound and the other at $0.94 per pound. In a
slega [8]

Answer:

  • 3 pounds at $3.87
  • 19 pounds at $0.94

Step-by-step explanation:

Let x represent the number of pounds of high-priced jelly beans sold. Then the total revenue was ...

  3.87x + 0.94(22 -x) = 29.47

  2.93x + 20.68 = 29.47 . . . . . . eliminate parentheses, collect terms

  2.93x = 8.79 . . . . . . . . . . . . . .  subtract 20.68

  x = 3  . . . . . . . . . divide by 2.93

3 pounds of $3.87 jelly beans were sold; 19 pounds of $0.94 jelly beans were sold.

8 0
4 years ago
Write the equation of a hyperbola with vertices at (1,1) and (9, 1) and foci at (0, 1) and (10, 1).
Leni [432]

Answer:

Standard form of equation for a hyperbola with horizontal transverse axis:

(x-h)^2/a^2-(y-k)^2/b^2=1, (h,k)=(x,y) coordinates of center

For given hyperbola:

x-coordinate of center=(9+1)/2=5 (use midpoint formula)

y-coordinate of center=1

center: (5,1)

length of horizontal transverse axis=8 (from 1 to 9)=2a

a=4

 

a^2=16

..

Foci

2c=9 ( from 1 to 10)

c=4.5

..

c^2=a^2+b^2

b^2=c^2-a^2=20.25-16=4.25

..

Equation of hyperbola:

(x-5)^2/16-(y-1)^2/4.25=1

7 0
4 years ago
PLEAS HELP THERE IS PIC drag the tiles to the correct boxes to complete the pairs. how many solutions does each equations have ?
lana66690 [7]

Answer:

j

ouiooiyy

Step-by-step explanation:

hhgjkhhkk

jjjjxldodldldodododo

5 0
3 years ago
Read 2 more answers
What is the solution to this equation?
user100 [1]
Answer:
d. 21

Explanation:
Step 1 - Subtract 13 from both sides
x + 13 = 34
x + 13 - 13 = 34 - 13
x = 21
3 0
3 years ago
Read 2 more answers
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