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2 years ago

The graph of f(x) is shown.

Mathematics

2 answers:

DedPeter [7]2 years ago

4 0

Answer: A

Step-by-step explanation:

Aleks04 [339]2 years ago

3 0

Answer:

IDK if you still need this but it's A

Step-by-step explanation:

I just took the quiz and got it right :)

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What should you do first in solving the quadratic equation?<br> x² + 18x + 81 = 25

N76 [4]

Answer:

x= -4,-14

Step-by-step explanation:

Try first to solve the equation by factoring. Be sure that your equation is in standard form before you start your factoring attempt.

3 0

2 years ago

Evaluate and simplify sin (-15º).

olga55 [171]

Note:

sin(-θ) = -sinθ

sin(-15°) = -sin15° Use a calculator

sin(-15°) = -sin15° = -0.2588

sin(-15°) = -0.2588

7 0

2 years ago

If one person runs 8.1 miles per hour in one direction and another with a speed of 6.3 in an other direction how many hours woul

djverab [1.8K]

Answer:

1.4 hours

Step-by-step explanation:

Runner A:

Speed = 8.1 mph

Time, = t

Runner B :

Speed = 6.3 mph

Time, = t

Distance apart = 20.16 miles

Distance = speed * time

Distance of Runner A + Distance of runner B = distance apart

8.1t + 6.3t = 20.16

14.4t = 20.16

t = 20.16 / 14.4

t = 1.4 hours

Number of hours, t = 1.4 hours

7 0

2 years ago

I need help my teacher talks to fast and i don't get anything he says

LUCKY_DIMON [66]

Answer:

2$+(1.29$ x 30)=40.70$

Step-by-step explanation:

6 0

2 years ago

Solve 6/×-3 =x/3

Eduardwww [97]

Answer:

X = -3. non-extraneous

Step-by-step explanation:

The given equation is $\frac{6}{x-3} =\frac{x}{3}$

We cross multiply to get:

$6*3=x(x-3)$

Expand and multiply.

$18=x^2-3x$

$x^2-3x-18=0$

We factor to obtain:

$(x-6)(x+3)=0$

$x=-3,x=6$

Checking for extraneous solutions

Substitute x=-3 $\frac{6}{-3-3} =\frac{-3}{3}$

$\frac{6}{-6} =\frac{-3}{3}$

$-1=-1$

$1=1$ .....Non-extraneous

Checking for x=6

$\frac{6}{6-3} =\frac{6}{3}$

$\frac{6}{3} =\frac{6}{3}$

$2=2$ ....Non-extraneous

6 0

2 years ago