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3 years ago

Write the quadratic equation whose roots are 3 and -4, and whose leading coefficient is 5.

Mathematics

1 answer:

ivanzaharov [21]3 years ago

8 0

Answer:

$f(x)=5x^2-5x-60$

Step-by-step explanation:

We know that x=3 is the solution to x-3=0 and x=-4 is the solution to x+4=0, thus:

$f(x)=5(x-3)(x+4)\\\\f(x)=5(x^2-x-12)\\\\f(x)=5x^2-5x-60$

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At Taco Bell, I made a large purchase of 13 items that cost a total of $28.17. If Chicken Burritos cost $1.89 each and a Cheesy

Sonja [21]

Answer:

Number of Chicken Burritos purchased=7

Number of Cheesy Gordita Crunch purchased=6

Step-by-step explanation:

Let x be the number of Chicken Burritos and y be the number of Cheesy Gordita Crunch.

Total number items purchased=13

Total cost of 13 items=$28.17

Cost of each Chicken Burritos=$1.89

Cost of each Cheesy Gordita Crunch=$2.49

We have to find number of each items purchased.

According to question

$x+y=13$ .....(1)

$1.89x+2.49y=28.17$ ...(2)

Equation (1) multiply by 2.49 and then subtract equation (2) from (1)

$0.6x=4.2$

$x=\frac{4.2}{0.6}$

x=7

Substitute x=7 in equation (1)

$7+y=13$

$y=13-7=6$

Number of Chicken Burritos purchased=7

Number of Cheesy Gordita Crunch purchased=6

6 0

3 years ago

Which of the following choices shows y = (x − 3)^2 − 25 in standard form?

Ksivusya [100]

The answer would be x^2-6x-16

Explanation:
y=(x-3)^2 -25
(x-3)(x-3)-25
x^2-3x-3x+9-25
x^2-6x-16

6 0

2 years ago

What is the equation of the line that passes through the point (2, -1) and has a slope of 3/2?

barxatty [35]

Answer:x=-2

Step-by-step explanation: -1=3/2x+2

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3 years ago

I need help figuring out when to use law of sine or law of cosine?

irina [24]

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3 years ago

Solve the system by substitution.<br> - 2x – 10y = -2<br> -4y = x

mihalych1998 [28]

Answer:

x = -4 and y = 1

Step-by-step explanation:

hope this helps please like and mark as brainliest

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3 years ago