4 years ago

Please help me with this

Mathematics

1 answer:

Maurinko [17]4 years ago

8 0

Answer:

C and E I think

Step-by-step explanation:

They both represent taking number of people, or population

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Which expression is equivalent to 7(-3k)

rosijanka [135]

Answer:

-21k=7(-3k)................………………

8 0

3 years ago

Find all the zeros of the equation. -3x^4+27x^2+1200=0 PLEASE HELP and show work

asambeis [7]

Answer: x=−5 or x=5

Step-by-step explanation:

−3x4+27x2+1200=0

Step 1: Factor left side of equation.

−3(x2+16)(x+5)(x−5)=0

Step 2: Set factors equal to 0.

x2+16=0 or x+5=0 or x−5=0

x=−5 or x=5

8 0

3 years ago

Jimmy owns a small engine repair business. The revenue, in dollars, can be modeled by the equation y = 420 + 72x, where x is the

kozerog [31]

Answer:

5 hours

Step-by-step explanation:

Given

$y = 420 + 72x$ --- Revenue

$y = 24x^2 + 180$ --- Overhead cost

Required

Determine the hours for break even

To do this, we simply equate both expressions as follows:

$24x^2 + 180 = 420 + 72x$

Collect Like Terms

$24x^2 - 72x + 180 - 420 = 0$

$24x^2 - 72x -240 = 0$

Divide through 24

$x^2 - 3x - 10 = 0$

Expand:

$x^2 -5x + 2x -10 = 0$

Factorize:

$x(x -5) + 2(x -5) = 0$

$(x + 2)(x -5) = 0$

$x + 2 = 0\ or\ x - 5 = 0$

$x = -2\ or\ x = 5$

But x can't be negative because it represents time.

<em>So, x = 5 hours</em>

3 0

3 years ago

Now, solve use the equation to solve for w.

babymother [125]

Answer:

Option A

Step-by-step explanation:

$25w+200=750\\\\25w+200-200=750-200\\\\25w=550\\\\\frac{25w=550}{25}\\\\\boxed{w=22}$

Hope this helps.

4 0

4 years ago

State of the triangles in the pair are similar. If so, complete the similarity statement.

kherson [118]

Yes they are similar. ⃤SRQ ~ ⃤SBC

4 0

3 years ago