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True [87]
2 years ago
5

lign="absmiddle" class="latex-formula">
​
Mathematics
2 answers:
professor190 [17]2 years ago
3 0

Answer:

15x

Step-by-step explanation:

because i multiply i side by side and copy the variable

murzikaleks [220]2 years ago
3 0

Answer:

- x² + 8x - 15

Step-by-step explanation:

Given

(5 - x)(x - 3)

Each term in the second factor is multiplied by each term in the first factor, that is

5(x - 3) - x(x - 3) ← distribute parenthesis

= 5x - 15 - x² + 3x ← collect like terms

= - x² + 8x - 15 ← in standard form

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tigry1 [53]

Answer:

The general equation of a circle is x2 + y2 - 6x - 16y + 48 = 0

Step-by-step explanation:

7 0
3 years ago
If 800g of a radioactive substance are present initially and 8 years later only 450g remain, how much of the substance will be p
artcher [175]

A=Pe^(rt)

P = 800g

t = 8 years

A = 450g

r = This is what we will try and find to start with

450=800e^(r*8)

After running the math through a calculator, we end with r = -0.07192

Now we just re-input this information into our equation: A=800e^(-0.07192*16)

A=800e^(1.15072)

Now we will re-write the equation using the negative exponent rule:

A = 800 1/e^1.15072

Combine right side:

A = 800/e^1.15072

Then do the math:

A = 253.12709836......

That will give us A = 253 (rounded to the whole number)

I hope this helps! :)

5 0
3 years ago
Find the solution of 4x2y′′−4x2y′+y=0,x>04x2y″−4x2y′+y=0,x>0 of the form y1=xr(1+c1x+c2x2+c3x3+⋯)
BabaBlast [244]

Answer:

r = 1/2

c1 = 3/4

c2 = 27/64

c3 = 405/1408

Step-by-step explanation:

Find the solution of 4x2y′′−4x2y′+y=0,x>04x2y″−4x2y′+y=0,x>0 of the form y1=xr(1+c1x+c2x2+c3x3+⋯)

r = 1/2

c1 = 3/4

c2 = 27/64

c3 = 405/1408

The solution is attached.

5 0
3 years ago
NUMBER 1 PLEASE ASAP
blsea [12.9K]

Answer:

MAYBE: 14?

Step-by-step explanation:

i just read it in the pic above and worked it out.

6 0
3 years ago
Read 2 more answers
Could someone help with the PORTFOLIO item? ASAP? PLEASE
elena55 [62]

Answer:

hello

Step-by-step explanation:

please provide your textbook because i dont have it

8 0
2 years ago
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