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sp2606 [1]
1 year ago
5

Please help, Pre-Algebra super easy math question

Mathematics
2 answers:
ivanzaharov [21]1 year ago
7 0

Answer:

-16

Step-by-step explanation:

b) -x²;                   x = -4

-(-4)²

-(16)

-16

I hope this helps!

sergij07 [2.7K]1 year ago
3 0

Answer: -16

Step-by-step explanation:

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Find the area of this regular polygon.<br> Round to the nearest tenth.<br> 8.65 mm<br> [? ]mm2
nadezda [96]

Answer:

Actually it's not polygon. it's a nonagon. With r=8.65mm″, the law of cosines gives us side a:

a=√{b²+c²−2bc×cos40°}

a=√{149.645−149.645cos40°}

Area Nonagon = (9/4)a²cos40°

=9/4[149.645−149.645cos40°]cot20°

=336.70125[1−cos(40°)]cot(20°)

Applying an identity for the cos(40°) does not get us very far…

= 336.70125[1−(cos2(20°)−1)]cot(20°)

= 336.70125[2−cos2(20°)]cot(20°)

= 336.70125[2−(1−sin2(20°))]cot(20°)

= 336.70125[1+sin2(20°)]cos(20°)sin(20°)

= 336.70125[cot(20°)+sin(20°)cos(20°)]mm²

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3 years ago
Mulitply (2-2)(3x+4) using distributive property
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Your Aunt Matilda passes away and leaves you with the tidy sum of $50,000. You find a bank that will pay you 5.15 % per year com
ohaa [14]

Answer:

Deduction in the step-by-step explanation

Step-by-step explanation:

If a P0=50.000 deposit is compound every instant, the ammount in the account can be modeled as:

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If you pull out d dollars a year, the equation becomes:

P(t) = P_{0}*e^{it}-d*t

If we derive this equation in terms of t, we have

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The first term can be transformed like this:

i*P_{0}*e^{it} = i*P(t)

So replacing in the differential equation, we have

dP/dt=i*P_{0}*e^{it}-d\\dP/dt=i*P(t)-d

Rearranging

dP/dt-i*P(t)=-d

5 0
3 years ago
A nut mixture of peanuts and macadamia nuts at a small fair is $1.00 per pound of peanuts and $3.26 per pound of macadamia nuts.
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Answer:

D

Step-by-step explanation:

You can infer to the solution of this problem by looking at the choices. Hope this helped :)

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