3 years ago

PLZ GUYS HELP WITH THIS ALGEBRA QUESTION!!!! 30 POINTS AND BRAINLIEST

Mathematics

1 answer:

lubasha [3.4K]3 years ago

3 0

By the operation of the problem

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Alicia used 4 gallons of gasoline to travel 90 miles. At the same rate, how far can she travel on a full tank that holds 18 gall

MrRa [10]

90 miles/4 gallons = 22.5 miles/1 gallon.

22.5 miles*18 gallons= 405 miles

the answer is 405 miles

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3 years ago

The roots of a quadratic equation ax2+bx+c=0 are 3+sqrt2 and 3−sqrt2. Find the values of b and c assuming that a=1.

slamgirl [31]

Answer:

$b=-6\\c=7$

Step-by-step explanation:

we know that

The general equation of a quadratic function in factored form is equal to

$y=a(x-x_1)(x-x_2)$

where

a is a coefficient of the leading term

x_1 and x_2 are the roots

we have

$a=1\\x_1=3+\sqrt{2}\\x_2=3-\sqrt{2}$

substitute

$y=(1)(x-(3+\sqrt{2}))(x-(3-\sqrt{2}))$

Applying the distributive property convert to expanded form

$y=x^2-x(3-\sqrt{2})-x(3+\sqrt{2})+(3+\sqrt{2})(3-\sqrt{2})$

$y=x^2-(3x-x\sqrt{2})-(3x+x\sqrt{2})+(9-2)$

$y=x^2-3x+x\sqrt{2}-3x-x\sqrt{2}+7$

$y=x^2-6x+7$

therefore

$b=-6\\c=7$

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2 years ago

What is -24 divided by 7 as a mixed number, in simplified form

elena55 [62]

-7 * 3 = -21 so the answer is

-3 3/7

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2 years ago

A student bought artichokes for 8.40, cucumbers for 2.88, lettuce for 4.65, tomatoes for 1.15, and broccoli for 2.50. Find a rea

ankoles [38]

Answer:

Step-by-step explanation:

8+3+5+1+3=20

rounded up at .50 or higher

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3 years ago

When did my mom chop up my glizzy A:2015 B:2017 C:2018 D:2020

Artist 52 [7]

Answer:

imma go wit B. I mean thats my guess

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3 years ago