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2 years ago

I need help under 10mins........

Mathematics

2 answers:

HACTEHA [7]2 years ago

7 0

Answer: its B

lead coefficient: 4x^2

coefficient: -9x

constant: 8

MArishka [77]2 years ago

3 0

Answer:

Step-by-step explanation:

this equation is in the form of ax^2+bx+c

so a is 4, b is -9, and c is 8

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1/3y=3<br> Find the value of y

Ivanshal [37]

Answer is 1/9
Hope it help!!

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3 years ago

Which would be the best method to use to solve the following equations? Explain your reasoning.

o-na [289]

A. square root property

$3x^2-192=0\\x^2-66=0\\x^2=66\\x= -\sqrt{66} or \sqrt{66}$

it has one value with x which is x^2 and it cn be easily solved without having to factorise, quadratic formula cant be used as it need ax^2+bx+c=0 format

B. factorising

$x^2-x-6=0\\x^2+2x-3x-6=0\\(x+2)(x-3)=0\\x+2=0 and x-3=0\\x= -2 \\x= 3$

i just felt like this was easier to factorise than the other 2 options left

C. Completing the square

$x^2-6x-7=0\\(x-3)^2=0\\x= -1\\x= 7$

same reason personal preference

D- Quadratic

$x^2-17x-7=0\\x=\frac{-(-17)+\sqrt{(-17)^2-4(1)(-7)} }{2(1)} \\x=\frac{-(-17)-\sqrt{(-17)^2-4(1)(-7)} }{2(1)}\\x=17.4\\x=-0.402$

the 17 kinda threw me off and i didnt wanna get on factorising or doing completing the square so quadratic formal

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2 years ago

What is 3,200,000,000,000 in scientific notation

sashaice [31]

$3 200 000 000 000= 3.2 \cdot 10^{12}$

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3 years ago

-6x+4y=-12 in slope intercept form

cricket20 [7]

Answer:

x= 2 /3 y+2

Step-by-step explanation:

Let's solve for x.

−6x+4y=−12

Step 1: Add -4y to both sides.

−6x+4y+−4y=−12+−4y

−6x=−4y−12

Step 2: Divide both sides by -6.

−6x /−6 = −4y−12 /−6 x= 2 /3 y

=x= 2 /3 y+2

<h3><u>brainliest please?</u></h3>

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3 years ago

Read 2 more answers

A bike rental company charges based on the distance you travel. Their rates are represented in the graph where y is cost and x i

LUCKY_DIMON [66]

The rental costs $0.25 per 1 mile

Have a good day or night! Hope your safe out there

3 0

2 years ago