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3 years ago

Vivian won a $18 gift certificate to a Mexican restaurant. She must spend more than the

Mathematics

1 answer:

7nadin3 [17]3 years ago

7 0

Answer:

$7x+y>18$

Step-by-step explanation:

$7x$ is 7 dollars times the amount of burritos

$y$ is 1 dollar times the amount of tacos

$>$ because the final price has to be more than the gift card

$18$ the money on the gift card

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Find the difference.

user100 [1]

Answer:

The answer is 4.71 so E.

Step-by-step explanation:

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3 years ago

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anna walks her dog at a constant rate of 12 blocks in 8 minutes, show the total time it takes to walk 12,24,36, and 48 blocks

hjlf

Answer: 8 minutes, 16 minutes, 24 minutes, 32 minutes

Step-by-step explanation: 12x2=24. 8x2=16. 12x3=36. 8x3=24. 12x4=48. 8x4=32.

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4 years ago

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Write a polynomial function f of least degree that has rational coefficients, a leading coefficient of 1 and the given zeros for

timama [110]

The general form of a polynomial is: x² + bx + c = 0. Substituting the roots,

3² + b(3) + c = 0
3b + c = -9 --> eqn 1

(5 + √5)² + (5 +√5)(b) + c = 0
(5+√5)b + c = -30-10√5 --> eqn 2

Solving both equations simultaneously by subtracting eqn 2 from eqn 1,
(-2 - √5)b = 21 + 10√5
b = -8 - √5

Using eqn 1,
3(-8 - √5) + c = -9
-24 - 3√5 + c = -9
c = -9 + 24 + 3√5
c = 15 + 3√5

Hence, the polynomial is: <em>f(x) = x² + (-8 - √5)x + (15 + 3√5)</em>.

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4 years ago

Which of the segments below is a secant?

valentina_108 [34]

Answer:

it is d i believe

8 0

2 years ago

How can you use factoring to solve these three problems?

torisob [31]

You're meant to make one side of the equation equal 0.
For example, the first problem is $2k x^{2}$ + 9k = -7
You'd add 7 to both sides, leaving you with $2k x^{2}$ + 9k +7 =0
And I assume you know how to factor??

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3 years ago