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3 years ago

8w - 16 Helpppppppppppp

Mathematics

1 answer:

Sever21 [200]3 years ago

4 0

-2? it’s been awhile sorry if it’s wrong

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Simplify the following expression using only positive exponents. Help please!? It has to be only positive exponents the -9/7t an

wlad13 [49]

(-9t^25) / (7t^26) = -9 / (7t)

8 0

3 years ago

What is the main purpose of closing entries for revenues and expenses into Profit and Loss Summary? a. To determine the profit f

ANTONII [103]

Answer:

Step-by-step explanation:

Revenues and expenses are closed every year so that the profit or loss can be determined for the yearly period.

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3 years ago

Martin runs a 5 kilometer race in 25 minutes. What is his unit rate?

SOVA2 [1]

Answer:

[ 60/25 ] x 5 km/h = 12 km/h

Step-by-step explanation:

4 0

3 years ago

What are the real and complex solutions of the polynomial equation? x^4-41x^2=-400. *work needed*

pickupchik [31]

<h3>Answer: x = -5, -4, 4 and 5.</h3><h3>All four zeros are real solutions.</h3>

Step-by-step explanation:

Given the polynomial equation $x^4-41x^2=-400$ .

Adding 400 on both sides to get rid 400 from right side and set 0 on right side, we get

$x^4-41x^2+400=-400+400$ .

$x^4-41x^2+400=0$ .

Factoring by product sum rule.

We need product of 400 and sum upto -41.

We can see that 400 = -25 × -16 = 400 and -25-16 = -41.

Therefore,

$x^4-25x^2-16x^2+400=0$

Making it into two groups, we get

$(x^4-25x^2)+(-16x^2+400)=0$

Factoring out GCF of each group, we get

$x^2(x^2-25)-16(x^2-25)=0$

$(x^2-25)(x^2-16) =0$

Factoring out $(x^2-25)$ and $(x^2-16)$ separately by difference of the squares identity $a^2-b^2=(a-b)(a+b)$ , we get

$(x^2-25) = x^2-5^2= (x-5)(x+5)$ and

$x^2-16 = x^2-4^2 =(x-4)(x+4)$ .

Therefore,

$(x-5)(x+5)(x-4)(x+4) =0$

Applying zero product rule,

x-5=0

x+5=0

x-4=0 and

x+4=0.

Therefore,

<h3>x = -5, -4, 4 and 5.</h3><h3>All four zeros are real solutions.</h3>

6 0

3 years ago

What step is wrong -12=4(f-6) step 1 12=4f step 2 4=f step 3

kirza4 [7]

Answer:

Step(iii)

The value of 'f' = 3

Step-by-step explanation:

Given - 12 = 4(f-6)

Multiply

- 12 = 4 f - 24

- 12 = 4 f - 24

Adding '12' on both sides, we get

- 12 + 12 = 4 f - 24 + 12

0 = 4 f - 12

4f - 12 =0

4 f = 12

<u><em>Step(iii):</em></u>-

Dividing '4' on both sides, we get

f = 3

3 0

3 years ago