How do I solve A and B ?

Mathematics

2 answers:

iris [78.8K]4 years ago

5 0

Answer:

a)x=5; b)x=4

Step-by-step explanation:

a) 4x-3=2x+7

=>4x-2x=7+3

=>2x=10

=>x=5 [divide both by 2]

b)2x+6=7x-14

=>7x-2x=6+14

=>5x=20

=>x=4 [divide both by5]

son4ous [18]4 years ago

5 0

Good morning ☕️

___________________

Step-by-step explanation:

Look at the photo below for the answer .

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The APR of Lillian's savings account is 3.4%, and interest is compounded semiannually. If Lillian makes no additional deposits o

Evgen [1.6K]

The equation for that is

A = P * [ 1 + (r/n) ] ^(nt)

A = amount of money accumulated after n years, including interest.
P = principal amount (the initial amount you borrow or deposit)
r = annual rate of interest (as a decimal)
n = number of times the interest is compounded per year
t = number of years the amount is deposited or borrowed for.

In this question, P = 9700 , r = 0.034, n = 4 , t = 1

A = 9700 * [ 1 + (0.034 / 4) ] ^ (4 * 1)

= 9700 * ( 1 + 0.0085 )^4

= 9700 * (1.0085)^4

= 9700 * 1.03443596

= 10,032.60 rounded off

6 0

4 years ago

Read 2 more answers

The graph of y=3x^2-3x-1 is shown. Use the graph to find estimates for the solutions of i)3x^2-3x+2=2 ii) 3x^2-3x-1=x+1

AlexFokin [52]

Answer:

i) (0, 2) and (1, 2), ii) (0.333, 1.333) and (1, 2).

Step-by-step explanation:

i) Let be $y=3\cdot x^{2}-3\cdot x -1$ , if $3\cdot x^{2}-3\cdot x +2 = 2$ , which is equivalent to the following system of equations:

$y = 3\cdot x^{2}-3\cdot x +2$

$y = 2$

Now, this system is now represented by means of a graphing tool and whose outcome is attached below. There are two solutions: (0, 2) and (1, 2)

ii) Let be $y=3\cdot x^{2}-3\cdot x -1$ , if $3\cdot x^{2}-3\cdot x +2 = x+1$ , which is equivalent to the following system of equations:

$y = 3\cdot x^{2}-3\cdot x +2$

$y = x+1$

Now, this system is now represented by means of a graphing tool and whose outcome is attached below. There are two solutions: (0.333, 1.333) and (1, 2)