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3 years ago

Pls help me I’m struggling

Mathematics

1 answer:

konstantin123 [22]3 years ago

4 0

Answer:2

Step-by-step explanation:

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tigry1 [53]

Answer:

56 hope this helped you.

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3 years ago

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erastova [34]

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Graph the exponential model y=3(6)^x Which point lies on the graph? (-9 2) (-1, -18) (1, 18) (2, 9)

svetlana [45]

Answer:

(1,18)

Step-by-step explanation:

use a graphing calculator to graph the function

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3 years ago

What’s the vertex form of F(x)=x^2+2x-3

kupik [55]

Answer:

$\large\boxed{f(x)=(x+1)^2-4}$

Step-by-step explanation:

$\text{The vertex form of a quadratic equation}\ f(x)=ax^2+bx+c:\\\\f(x)=a(x-h)^2+k\\\\(h,\ k)-\text{vertex}\\=====================================$

$\bold{METHOD\ 1:}\\\\\text{convert to the perfect square}\ (a+b)^2=a^2+2ab+b^2\qquad(*)\\\\f(x)=x^2+2x-3=\underbrace{x^2+2(x)(1)+1^2}_{(*)}-1^2-3\\\\f(x)=(x+1)^2-4\\==============================$

$\bold{METHOD\ 2:}\\\\\text{Use the formulas:}\ h=\dfrac{-b}{2a},\ k=f(k)\\\\f(x)=x^2+2x-3\to a=1,\ b=2,\ c=-3\\\\h=\dfrac{-2}{2(1)}=\dfrac{-2}{2}=-1\\\\k=f(-1)=(-1)^2+2(-1)-3=1-2-3=-4\\\\f(x)=(x-(-1))^2-4=(x+1)^2-4$

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4 years ago

Damian raced his bike 7.89 miles, swam 15.01 miles, and ran 12.4 miles. How many miles did Damian bike, swim and run?

NikAS [45]

Answer:

Damian swam, ran, and raced his bike for a grand total of 35.30 miles

Step-by-step explanation:

15.01+12.4= 27.41 miles

27.41+7.89= 35.30 miles

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3 years ago