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2 years ago

Find the squares of (y+3)

Mathematics

1 answer:

emmasim [6.3K]2 years ago

8 0

Answer:

Since we know that

(a+b)

+2ab+b

(a−b)

−2ab+b

Now,

(i)

(x+3y)

+2×x×3y+(3y)

+6xy+9y

(ii)

(2x−5y)

=(2x)

−2×2x×5y+(5y)

=4x

−20xy+25y

(iii)

(a+

)

+2×a×

)

+1+

(iv)

(2a−1a)=(1a)

(1a)

=1a

Answer

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6,000 dollars is invested in two different accounts earning 3% and 5% interest. At the end of one year, the two accounts earned

kap26 [50]

Answer:

$2000

Step-by-step explanation:

6,000 dollars is invested in two different accounts earning 3% and 5% interest.

Let x be the amount invested in account earning 3% interest

So, 6000-x is the amount invested in account earning 5% interest

$S.I. =\frac{P\times R\times T}{100}$

So, Simple interest for account earning 3% interest

$S.I. =\frac{x \times 3 \times 1}{100}$

$S.I. =0.03x$

Simple interest for account earning 5% interest

$S.I. =\frac{(6000-x) \times 5 \times 1}{100}$

$S.I. =0.05(6000-x)$

$S.I. =300-0.05x$

Since we are given that the two accounts earned $220 in interest

So, $0.03x+300-0.05x=220$

$−0.02x+300=220$

$80=0.02x$

$\frac{80}{0.02}=x$

$4000=x$

So, 4000 was invested at 3%

(6000-x)=6000-4000=2000 was invested at 5%

Hence 2000 was invested at 5%

8 0

3 years ago

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spayn [35]

Answer:

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2 years ago

The base of a triangle is twice of its hypotenuse.the sin of angle opposite to base is..?

beks73 [17]

Answer:

hey,

ur question is wrong,

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3 years ago

8. For all pairs of real numbers P and Q where<br> P = 2Q + 9, Q = ?

Gnom [1K]

Answer:

Q = (P-9)/2

Step-by-step explanation:

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2 years ago

Help please?!

Furkat [3]

Well from what i know here's what i would put........
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8 0

3 years ago

Find the squares of (y+3) ​

Find the squares of (y+3)