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3 years ago

Solve. 4 + x 7 = 2 A) -14 B) 10 C) 12 D) 42

Mathematics

1 answer:

Dima020 [189]3 years ago

7 0

Answer:

Step-by-step explanation:

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6/b-1=9/7 solve the proportion

podryga [215]

Answer:

B should equal 17 over 3

Step-by-step explanation:

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3 years ago

Read 2 more answers

ASAP Please!!<br><br>What is 25((-5/2)x+(1/2))?

Tresset [83]

Use the distributive property of multiplication.
25(-5x/2)=-62.5x, and 25(1/2)=12.5.
Add these together: -62.5x + 12.5 (answer)

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2 years ago

87 less than the quotient of an unknown number and 43 is -75

choli [55]

The statement is expressed algebraically as
(x/43) - 87 = -75

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3 years ago

What is the exact time t, in years, needed for the balance of an account that earns 5% annual 8. Interest compounded continuousl

Brums [2.3K]

Answer:

It takes 22.52 years for the balance to triple in value.

Step-by-step explanation:

Continuous compounding:

The amount of money earned using continuous compounding is given by the following equation:

$A(t) = A(0)(1+r)^t$

In which A(0) is the initial amount of money and r is the interest rate, as a decimal.

Interest rate of 5%.

This means that $r = 0.05$ , and thus:

$A(t) = A(0)(1+r)^t$

$A(t) = A(0)(1+0.05)^t$

$A(t) = A(0)(1.05)^t$

Time for the balance to triple?

This is t for which $A(t) = 3A(0)$ . So

$A(t) = A(0)(1.05)^t$

$3A(0) = A(0)(1.05)^t$

$(1.05)^t = 3$

$\log{(1.05)^t} = \log{3}$

$t\log{1.05} = \log{3}$

$t = \frac{\log{3}}{\log{1.05}}$

$t = 22.52$

It takes 22.52 years for the balance to triple in value.

3 0

2 years ago

11] (8•10^-3)(2•10^10

Oduvanchick [21]

Answer:

16*10^7 or 160000000

Step-by-step explanation:

combine whole numbers: 8*2

and combine exponents: 10^-3*10^10=10^7

8*2*10^7

16*10^7

160000000

5 0

3 years ago