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Masja [62]
2 years ago
7

Amy went to the grocery store and purchased 4 apples, 5 oranges, and 2 bananas. What is the ratio of the number of oranges she p

urchased to the total number of items she purchased?
5:6

5:11

4:5

3:9
Mathematics
2 answers:
Lubov Fominskaja [6]2 years ago
7 0

Answer:

5:11

Step-by-step explanation:

ValentinkaMS [17]2 years ago
4 0

Answer:

5:11

Step-by-step explanation:

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How many solutions are there to this equation 3x(x-4)+5-x=2x-7
stich3 [128]

Answer:

  2 solutions

Step-by-step explanation:

I like to use a graphing calculator to find solutions for equations like these. The two solutions are ...

  • x = 1
  • x = 4

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To solve this algebraically, it is convenient to subtract 2x-7 from both sides of the equation:

  3x(x -4) +5 -x -(2x -7) = 0

  3x^2 -12x +5 -x -2x +7 = 0 . . . . . eliminate parentheses

  3x^2 -15x +12 = 0 . . . . . . . . . . . . collect terms

  3(x -1)(x -4) = 0 . . . . . . . . . . . . . . . factor

The values of x that make these factors zero are x=1 and x=4. These are the solutions to the equation. There are two solutions.

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<em>Alternate method</em>

Once you get to the quadratic form, you can find the number of solutions without actually finding the solutions. The discriminant is ...

  d = b^2 -4ac . . . . where a, b, c are the coefficients in the form ax^2+bx+c

  d = (-15)^2 -4(3)(12) = 225 -144 = 81

This positive value means the equation has 2 real solutions.

4 0
3 years ago
Percy works two part-time jobs to help pay for college classes. On Monday, he works 3 hours at the library and 2 hours at the co
laila [671]
For the answer to the two questions above,
3x + 2y = 36.50 (I)
2x + 5y = 50 (II)
Eliminating x from the two equations by subtraction:
first we multiply equation I by 2 and equation II by 3
6x + 4y = 73
6x + 15y = 150
Subtracting the two,
-11y = -77
y = 7
He earns $7 at the coffee cart
Substituting y into equation I,
3x + 14 = 36.5
x = $7.50

So we can conclude that, he earns a greater wage of $7.50 at the library,
6 0
3 years ago
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Amiraneli [1.4K]
For this case we have the following function:
 f (x) = (1/6) ^ x
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 Answer:
 
The function evaluated at x = 3 is:
 
f (3) = (1/216)
 
option C
8 0
3 years ago
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VARVARA [1.3K]
11.5 * 2.3 = large door size
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Answer:

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Step-by-step explanation:

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