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ANTONII [103]
4 years ago
7

Multiplying polynomials by polynomials (2x-3y)(4x-y)

Mathematics
1 answer:
nydimaria [60]4 years ago
8 0
8x^2 - 2xy - 12xy + 3y^2

8x^2 - 14xy + 3y^2
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Find the balance in an account with $7,000 principal earning 5% interest compounded quarterly
nadya68 [22]

Answer:

The balance is \$11,505.34  

Step-by-step explanation:

we know that    

The compound interest formula is equal to  

A=P(1+\frac{r}{n})^{nt}  

where  

A is the Final Investment Value  

P is the Principal amount of money to be invested  

r is the rate of interest  in decimal

t is Number of Time Periods  

n is the number of times interest is compounded per year

in this problem we have  

t=10\ years\\ P=\$7,000\\ r=0.05\\n=4  

substitute in the formula above  

A=\$7,000(1+\frac{0.05}{4})^{4*10}=\$11,505.34  

3 0
4 years ago
Find the geometric mean of 275 and 11 275/x=x/11 x^2= 3025 x=sq rt 3025 now I'm not sure what to do.
Bogdan [553]
Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
you got it 
<span>except keep going to get </span>
<span>x = ±√3025 </span>
<span>x = ± 55 </span>


<span>check: </span>
<span>275 , 55, 11 </span>
<span>is 55/275 = 11/55 ? YES </span>
<span>is -55/275 = 11/=55 ? YES</span>

6 0
3 years ago
Plz Help I would appreciate it!!!
andrew-mc [135]

Answer:

a) Similar triangles are triangles with the same shape but not necessarily the same size

b) 15/45 = 8/x

1/3 = 8/x (simplify the 15/45)

x = 8 * 3 (cross multiplication)

x = 24

c) y^2 = 15^2 + 8^2 (Pythagoras theorem)

y = *square root of* 15^2 + 8^2

y = 17

1/3 = 17/z

z = 17 * 3 (cross multiplication)

z = 51

6 0
3 years ago
Help plslsllsl its due tmr
olga55 [171]
X=12.5
If the perimeter is 90
90=3x+3x+15
Combine like terms
90=6x+15
Subtracts 15 from both sides
75=6x
Divide by six to get x by itself
12.5=x
Does this help?
6 0
3 years ago
A bag contains coins of rupees 2 Rupees 1 and 50 paise, in ratio of 1 is to 2 is to 4. if the total amount is rupees 72 find how
BabaBlast [244]

Answer:

<u>Final </u><u>answer </u><u>-</u>

number \: of \: 50 \: paise \: coins \: in \: the \: bag = 4x \\ \dashrightarrow{4 \times 12 = 48 \: coins}

hope helpful :D

4 0
2 years ago
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