2 years ago

-7x^2 + 2x - 1 = 0

Mathematics

1 answer:

sergiy2304 [10]2 years ago

3 0

I feel like it’s d because it is changed to the other form

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Lets see who is smart lol

Simora [160]

9514 1404 393

Answer:

$\square\quad{y=\dfrac{1}{2}x+4}\\\\\square\quad{\dfrac{y-5}{x-2}=\dfrac{1}{2}}$

Step-by-step explanation:

The slope of a line is the same everywhere, so an equation can be written making use of that fact.

$\dfrac{y-y_1}{x-x_1}=\dfrac{y_2-y_1}{x_2-x_1}\\\\\dfrac{y-5}{x-2}=\dfrac{7-5}{6-2}=\dfrac{2}{4}\\\\\boxed{\dfrac{y-5}{x-2}=\dfrac{1}{2}}$

Cross-multiplying gives ...

2(y -5) = x -2

2y -10 = x -2 . . . eliminate parentheses

2y = x +8 . . . . . . . add 10; next, divide by 2

$\boxed{y=\dfrac{1}{2}x+4}$

These equations match choices B and D.

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2 years ago

If Sandy's cookie recipe calls for 1/3 cup of brown sugar and she increases it by 2/9 of cup, how much brown sugar does she use?

aalyn [17]

She uses 5/9 of a cup

7 0

3 years ago

Okay so this is a weird one... if I take a medication twice a day for 9 months how many days have I taken that medication??? I h

Delvig [45]

Answer: 273 days i believe

Step-by-step explanation:

jan: 31 days

feb: 28 Days

mar: 31

apr: 30

may: 31

june: 30

july: 31

aug: 31

sept: 30

add all the days together to get 273

7 0

2 years ago

Multiple Choice –64 ÷ 4 = ? A. 15 B. –15 C. 16 D. –16

Alja [10]

Answer:

Step-by-step explanation:

- ÷ + = -

AND 64/4 IS 16

SOO -16 IS THE CORRECT ANSWER

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2 years ago

The expanded fom of (a-b)²

emmainna [20.7K]

Answer:

Step-by-step explanation:

$(a-b)^{2}$ = $a^{2}$ - 2ab + $b^{2}$

Hope this helps

plz mark as brainliest!!!!!

4 0

3 years ago

Read 2 more answers