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VladimirAG [237]

3 years ago

14

rhonda deposited $3000 in an account in the merrick national bank, earning 4.2% interest, compound annually. she made no deposit

s or withdrawls. write an equation that can be used to find b, her account balance after t years

1 answer:

Vinil7 [7]3 years ago

7 0

B= 3000+0.042x3000xT

(3000 dollars to begin with, plus 4.2% interest of that 3000 after t amount of years)

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A master electrician earns $62 per hour. His apprentice earns $40 per hour. The master electrician works 3 hours more than the a

photoshop1234 [79]

X=hours master worked
y=hours apprentice worked

62x+40y=492

if master worked 3hours more than apprntice
x=3+y

sub 3+y for x

62(3+y)+40y=492
expand
186+62y+49y=492
186+102y=492
minus 186 both sides
102y=306
divide both sides by 102
y=3

sub back
x=3+y
x=3+3
x=6

master electrician worked 6 hours
6*62=372

master electrician earned $372

7 0

2 years ago

Read 2 more answers

Una sustancia se encuentra en 15°c pero a partir de comienzo de un experimento su temperatura disminuye de manera uniforme a raz

bija089 [108]

Answer:

1= -15 °C

2= 7 minutos y medio

Step-by-step explanation:

1= colo la temperatura va bajando 2 grados cada minuto lo único que hay que hacer es restarle 30 °C a 15 y nos da -15 ° C

2= Solo divides 15 entre 2 y ya.

6 0

2 years ago

Find the inflection point of the function of f(x) = x³ -6x² +12x

Wewaii [24]

Points of inflections are zeroes of the second derivative. We have:

$f(x)=x^3-6x^2+12x\implies f'(x)=3x^2-12x\implies f''(x)=6x-12$

So, the second derivative equals zero if and only if

$f''(x)=0\iff 6x-12=0 \iff 6x=12 \iff x=2$

So, this is the only point of inflection of this function.

5 0

3 years ago

Given the function f(x) = 2/3 * x - 5 , evaluate f(9)

ch4aika [34]

Answer:

1

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

4-2x=11 how do I solve

Bingel [31]

Hey there!☺

$Answer:\boxed{x=\frac{-7}{2}}$

$Explanation:$

$4-2x=11$

In our first step, we will simplify both sides of the equation:

$4+-2x=11\\-2x+4=11$

Now subtract 4 from both sides:

$-2x+4-4=11-4\\-2x=7$

In our last step, we will divide both sides by -2:

$\frac{-2x}{2}=\frac{7}{-2}\\ x=\frac{-7}{2}$

x=-7/2 is your answer.

Hope this helps!☺

3 0

2 years ago