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USPshnik [31]
4 years ago
11

Why is it necessary to apply inverse operations on both sides of the equals l sign when solving an equations

Mathematics
1 answer:
liraira [26]4 years ago
8 0
Take this example (cause it's easy to explain)

10+5x=15x

To solve it we have to minus five on both side. We have to do this because we need to isolate the variable (in this case x) on the one side so we can divide and solve.

You would -5x (inverse from positive 5) from both sides on this because whatever you do to one side you have to do to the others to make it equal. In this case the answer would be x=1 (again cause it's easy lol.)

I hope this helps you!
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Suppose you invest $2250 in a D that earns 3% APR and is compounded monthly. The Cd matures in 2 years. How much will this CD be
olasank [31]

Answer:

$2388.95

Step-by-step explanation:

  • Principal, P= $2250
  • Annual Interest Rate, r= 3% =0.03
  • Time, n= 2 years
  • Since it is compounded monthly, Period, k= 12 Months

The worth of a compound deposit after a period of n years is calculated using the formula:

A(n)=P(1+\frac{r}{k})^{nk}

A(2)=2250(1+\frac{0.03}{12})^{12 \times 2}\\\\=2250(1+0.0025)^{24}\\=2250(1.0025)^{24}\\=\$2388.95

At maturity, the deposit will be worth $2388.95.

8 0
3 years ago
Solve 4(x + 1) + 8 = 24
Alenkinab [10]

Let's solve your equation step-by-step.<span><span><span>4<span>(<span>x+1</span>)</span></span>+8</span>=24</span>

<span />Step 1: Simplify both sides of the equation. <span><span><span>4<span>(<span>x+1</span>)</span></span>+8</span>=24</span>

<span /><span>Simplify: (Show steps) </span><span><span><span><span><span>(4)</span><span>(x)</span></span>+<span><span>(4)</span><span>(1)</span></span></span>+8</span>=24</span> (Distribute)<span><span><span><span> 4x</span>+4</span>+8</span>=24</span><span><span><span>(<span>4x</span>)</span>+<span>(<span>4+8</span>)</span></span>=24</span>(Combine Like Terms)<span><span><span> 4x</span>+12</span>=24</span><span><span><span>4x</span>+12</span>=24</span>

<span />Step 2: Subtract 12 from both sides. <span><span><span><span>4x</span>+12</span>−12</span>=<span>24−12</span></span><span><span>4 x</span>=12</span>

<span />Step 3: Divide both sides by 4.<span><span><span>‌<span><span>4x</span>4</span></span>‌</span>=<span><span>‌<span>124 </span></span>‌</span></span><span>x=<span>3</span></span>

5 0
3 years ago
HELP HELP HALP HELP HELP
RUDIKE [14]
C it’s what I chose for it
6 0
3 years ago
I need Help! can someone help
sattari [20]
Hi i only know how to do qn 3 and 4

3) 5x = 85 °
x= 85°/5
=17


4)5y =95°
y= 95/5
=19


NOTE* DO NOT WRITE THE ° FOR THE ANSWERS OF QN 3 AND 4
4 0
3 years ago
What is the equation of that line that passes through the point (5,2) and has a slope of 3
Iteru [2.4K]

Answer:Y= 3x-13

Step-by-step explanation: (5,2) Y= 2 X= 5. M = 3

Y=mx+b

2= 3(5)+b

2= 15+b

-15=-15 +b

-13=b

4 0
3 years ago
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