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2 years ago

I will mark brainest if it is right 1. x+20 = 11x + 30 x=

Mathematics

2 answers:

ella [17]2 years ago

7 0

Answer:

-1

Step-by-step explanation:

Sveta_85 [38]2 years ago

5 0

Answer:

Step-by-step explanation:

x+20=11x+30 minus x from both sides

20=10x+30 minus 30 from both sides

-10=10x divide by 10

x= -1

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Need help pleaseee i have a test on friday

larisa [96]

Answer:

x = 8

Step-by-step explanation:

Using the sine or cosine ratio in the right triangle and the exact value

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3 years ago

Linda is buying a new computer the shipping cost 8 percent of the purchase price if Windows computer cost $585 how much will it

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Step-by-step explanation:

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3 years ago

At an effective annual interest rate of i > 0, each of the following two sets of payments has present value K: (i) A payment

IgorLugansk [536]

Answer:

The present value of K is, $K=251.35$

Step-by-step explanation:

First of all, we need to construct an equation system, so

$(1)K=\frac{169}{(1+i)} +\frac{169}{(1+i)^{2}}$

$(2)K=\frac{225}{(1+i)^{2}} +\frac{225}{(1+i)^{4}}$

Then we equalize both of them so we can find $i$

$(3)\frac{169}{(1+i)} +\frac{169}{(1+i)^{2}}=\frac{225}{(1+i)^{2}} +\frac{225}{(1+i)^{4}}$

To solve it we can multiply $(3)*(1+i)^{4}$ to obtain $(1+i)^{4}*(\frac{169}{(1+i)} +\frac{169}{(1+i)^{2}}=\frac{225}{(1+i)^{2}} +\frac{225}{(1+i)^{4}})$ , then we have $225(1+i)^{2}+225=169(1+i)^{3}+169(1+i)^{2}$ .

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Finally, we replace it in (1) or (2), let's do it in (1) $K=\frac{169}{(1+0.2224)} +\frac{169}{(1+0.2224)^{2}}\\\\K=251.35$

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3 years ago

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Answer:

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Step-by-step explanation:

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2 years ago

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