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Ivanshal [37]
3 years ago
11

I need help solving algebra equations to teach my kid. D-4=12.4 D=?

Mathematics
2 answers:
Andreyy893 years ago
7 0

Answer: d=16.4

Step-by-step explanation:

Step 1) Add 4 to both sides: d-4+4=12.4+4

d=16.4

Luda [366]3 years ago
4 0

Answer: D=16 please give brainliest

Step-by-step explanation:

D-4=12

first add +4 to both sides to reverse it

D=16 and to make sure its right

lets substutie for D

16-4=12

12=12

correct

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Remember, in mathematics, a coefficient is a numerical or constant quantity placed before and multiplying the variable in an algebraic expression.
So, the coefficient in 6-4x-8+2 would be -4.
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2 years ago
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51 is 33 1/3 of what number?
Makovka662 [10]

1700, just use the inverse operation. The problem would look like this ( not inverse operation ) x ÷ 33 1/3 = 51

All you have to do is multiply the two numbers.

51 x 33 1/3 = 1700

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1700 ÷ 33 1/3 does indeed equal 51.


5 0
2 years ago
I need hlep its do to day
Taya2010 [7]

Answer:

x = -6/5

Step-by-step explanation:

distribute -4 on the left side of the equation first, then distribute 2 on the right side of the equation to get:

16x - 4 - 4x = 2x - 14 - 2

combine 'like terms':

12x - 4 = 2x - 16

subtract '2x' from each side to get:

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add 4 to each side to get:

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3 0
2 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
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Answer:

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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:

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

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

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

(1.05)^t = 3

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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.

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