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Umnica [9.8K]
2 years ago
11

Alison is buying binders for school. Small binders cost $3 each, and large binders cost $5 each. If Alison needs to buy at least

12 binders and has no more than $45 to spend, what is the maximum number of large binders she can buy?
a. 4

b 5

c 8

d 9
Mathematics
2 answers:
prisoha [69]2 years ago
8 0

Answer:

4 large folders     ( and 8 small folders....with $ 1 left over)

Step-by-step explanation:

x = small    y = large folders

x+y >= 12      x >=<u> 12-y </u>

3x + 5y <= 45

3 (12-y) + 5y <=45

36 -3y + 5y <= 45

    y <= 4.5               you cannot buy .5 of a large folder, so <u>4 large folders</u>

Mariulka [41]2 years ago
4 0

Answer:

9

Step-by-step explanation:

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14
Step2247 [10]

Answer:

B

Step-by-step explanation:

She needed to subtract 36 from both sides of the equation, instead she added 36 to the right side.

4 0
3 years ago
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Find the number of roots for each equation.<br> 5. 5x4 + 12x3 – x2 + 3x + 5 = 0
pav-90 [236]

Answer:

The number of roots for  equation 5x^4 + 12x^3 – x^2 + 3x + 5 = 0 is 4 .

Step-by-step explanation:

Here, the given function polynomial is :

P(x) : 5x^4 + 12x^3 – x^2 + 3x + 5 = 0

The Fundamental Theorem of Algebra says that a polynomial of degree n will have exactly n roots (counting multiplicity).

Now here, the degree if the polynomial is 4 (highest power of variable x).

So, according to the Fundamental Theorem, the given polynomial can have AT MOST 4 roots, counting Multiplicity.

Hence,  the number of roots for  equation 5x^4 + 12x^3 – x^2 + 3x + 5 = 0 is 4 .

7 0
3 years ago
SUPER EASY
goblinko [34]
<span>3(x + 5) = 3 · x + 3 · 5</span>
6 0
3 years ago
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Solve:<br> X + y = 4<br> -5x - 6y = -18
LiRa [457]

Answer: x = -5, y = 9

Step-by-step explanation:

The solution to the system of equations can be represented as a point.

4 0
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Not enough information to answer; Only 2 angles are given, no other information is provided. So no information can be drawn from the problem, therefore the answer is A, not enough information.

3 0
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