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Aleksandr-060686 [28]
2 years ago
15

3(-4b+1) = 15 pls help asap

Mathematics
1 answer:
Evgen [1.6K]2 years ago
5 0

Answer:

b = -1

Step-by-step explanation:

3(-4b+1) = 15

multiply: -12b + 3 = 15

subtract 3 from 15: -12b = 12

divide: b = -1

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Step-by-step explanation:

f(x) = 2x+3 and g(x) = x^(2)+(x)/(2) - 7 , what is  (f+g)(x)

x^2+5x/2-4

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Recall that in the problem involving compound interest, the balance A for P dollars invested at rate r for t years compounded n
RoseWind [281]

Answer:

(a)∴A=$6753.71.

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Step-by-step explanation:

We use the following formula

A=P(1+\frac rn)^{nt}

A=amount in dollar

P=principal

r=rate of interest

(a)

P=$2,500, r=5%=0.05,t =20 years , n= 4

A=\$2500(1+\frac{0.05}{4})^{(20\times 4)

   =$6753.71

∴A=$6753.71.

(b)

P=$1,000, r=8% =0.08,t =5 years , n= 2

A=\$1000(1+\frac{0.08}{2})^{(5\times 2)

   =$1480.24

∴A=$1480.24

(c)

A=$10,000, r=6% =0.06,t =5 years , n= 4

10000=P(1+\frac{0.06}{4})^{(5\times 4)}

\Rightarrow P=\frac{10000}{(1+0.015)^{20}}

\Rightarrow P=7424.70

∴P=$7424.70

(d)

A=$100,000, r=6% =0.06,t =10 years , n= 12

100000=P(1+\frac{0.07}{12})^{(10\times 12)}

\Rightarrow P=\frac{100000}{(1+\frac{0.07}{12})^{120}}

\Rightarrow P=49759.62

∴P=$49759.62

(e)

A=$100,000, r=10% =0.10,t =30 years , n= 12

100000=P(1+\frac{0.10}{12})^{(30\times 12)}

\Rightarrow P=\frac{100000}{(1+\frac{0.10}{12})^{360}}

\Rightarrow P=5040.99

∴P=$5040.99

(f)

A=$100,000, r=7% =0.07,t =20 years , n= 4

100000=P(1+\frac{0.07}{4})^{(20\times 4)}

\Rightarrow P=\frac{100000}{(1+\frac{0.07}{4})^{80}}

\Rightarrow P=2496.11

∴P=$2496.11

6 0
3 years ago
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