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3 years ago

Screenshot included...Which expression is equivalent to the given expression?

Mathematics

2 answers:

seropon [69]3 years ago

8 0

Answer should be A as both values in the expression need to be negative after expanding.

scZoUnD [109]3 years ago

3 0

I JUST took the test and the answer is A. Give the other guy brainlyist

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If K = (AB)/(A+B) , then B =?

ziro4ka [17]

Answer:

K(A+B)/A

Step-by-step explanation:

K = (AB)/(A+B)

K(A+B)=AB

K(A+B)/A=B

6 0

3 years ago

Lola plans to publish a magazine. She cannot publish unless she sells at least 100 subscriptions. Each subscription costs $20. T

dedylja [7]

Answer:

R(s) $\geq 2000$ ,

Step-by-step explanation:

The function R(s) = 20s

She needs to sell at least 100 subscriptions, so the least amount she wants to have is: 20*100 = $2000

Hence, is the domain of R(s) in this context

R(s) $\geq 2000$

Hope it will find you well

8 0

3 years ago

I need help with math 1010<br>completing the square<br>x^2-9x=10

Citrus2011 [14]

$x^2-9x=10|+20.25\\
x^2-9x+20.25=30.25\\
(x-4.5)^2=30.25\\
x-4.5=5.5 \vee x-4.5=-5.5\\
x=10 \vee x=-1$

7 0

3 years ago

PLZ help (SLOPE) 10 pts

eimsori [14]

I don’t really know how to do this but the slope of 10 is gonna be

7 0

3 years ago

Read 2 more answers

Describe the motion of a particle with position (x, y) as t varies in the given interval. (For each answer, enter an ordered pai

DerKrebs [107]

Answer:

The motion of the particle describes an ellipse.

Step-by-step explanation:

The characteristics of the motion of the particle is derived by eliminating $t$ in the parametric expressions. Since both expressions are based on trigonometric functions, we proceed to use the following trigonometric identity:

$\cos^{2} t + \sin^{2} t = 1$ (1)

Where:

$\cos t = \frac{y-3}{2}$ (2)

$\sin t = x - 1$ (3)

By (2) and (3) in (1):

$\left(\frac{y-3}{2} \right)^{2} + (x-1)^{2} = 1$

$\frac{(x-1)^{2}}{1}+\frac{(y-3)^{2}}{4} = 1$ (4)

The motion of the particle describes an ellipse.

7 0

3 years ago