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4 years ago

5

PLEASE HELPPP

2 answers:

Scrat [10]4 years ago

6 0

The answer is D because you can multiply the second equation by -4

zmey [24]4 years ago

6 0

Multiply the bottom equation by 4 and subtract them

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A bank representative studies compound interest so she can better serve customers. She analyzes what happens when 2,000 earns se

Law Incorporation [45]

Answer:

Final amount = 25,407.4

Step-by-step explanation:

A = P ( 1 + $\frac{r}{t} )n^{}$

A = final amount

P = initial principal balance

r = interest rate

t = number of times interest applied per time period

Here P = 2000

r = 4 %

n = 3 years

A = 2000( 1 + $\frac{4}{3}$ )³

= 2000( $\frac{7}{3}$ )³

= 2000 × $\frac{343}{27}$

= 25,407 .4

Final amount = 25,407.4

3 0

3 years ago

klasskru [66]

Answer:

$\mathrm{The\:solutions\:to\:the\:system\:of\:equations\:are:}$

$y=0,\:x=6$

Step-by-step explanation:

Considering the system of the equations

$\begin{bmatrix}2x-7y=12\\ -x+15y=-6\end{bmatrix}$

$\mathrm{Isolate}\:x\:\mathrm{for}\:2x-7y=12$

$2x-7y+7y=12+7y$

$2x=12+7y$

Divide both sides by 2

$\frac{2x}{2}=\frac{12}{2}+\frac{7y}{2}$

$x=\frac{12+7y}{2}$

$\mathrm{Subsititute\:}x=\frac{12+7y}{2}$

$\begin{bmatrix}-\frac{12+7y}{2}+15y=-6\end{bmatrix}$

$-\frac{12+7y}{2}+15y=-6$

$\mathrm{Multiply\:both\:sides\:by\:}2$

$-\frac{12+7y}{2}\cdot \:2+15y\cdot \:2=-6\cdot \:2$

$-\left(12+7y\right)+30y=-12$

$-12+23y=-12$

$-12+23y+12=-12+12$

$23y=0$

$\mathrm{Divide\:both\:sides\:by\:}23$

$\frac{23y}{23}=\frac{0}{23}$

$y=0$

$\mathrm{For\:}x=\frac{12+7y}{2}$

$\mathrm{Subsititute\:}y=0$

$x=\frac{12+7\cdot \:0}{2}$

$x=\frac{12}{2}$

$x=6$

$\mathrm{The\:solutions\:to\:the\:system\:of\:equations\:are:}$

$y=0,\:x=6$

4 0

4 years ago

4<-2x+3<9<br> Graph the inequality

Maksim231197 [3]

look at the screenshot :)

8 0

3 years ago

Please help me with this, I don't get it!

Helen [10]

$V_B=2x\cdot2y\cdot4=16xy=120\ cm^3\\
V_A=x\cdot y\cdot2=2xy\\\\
16xy=120\ cm^3\\
2xy=15\ cm^3=V_A$

5 0

3 years ago

Read 2 more answers

12. Elly's credit card record for the last 7 months is below. Based on the information from the table, what will be her new bala

blagie [28]

Answer:

52145.55

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers