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adell [148]
4 years ago
14

4t + 2 = 7t - 7 What is t?

Mathematics
2 answers:
AveGali [126]4 years ago
7 0

Hey!

Here is the equation:

4t + 2 = 7t - 7

Subtract 4t from both sides. It becomes:

2 = 3t - 7

Add 7 to both sides. It becomes:

9 = 3t

Divide both sides by 3 to leave t alone. It becomes:

\frac{9}{3} = \frac{3t}{3} \\ t = 3

That means t is equal to 3.

<em>Good luck and hope this helps!</em>

jok3333 [9.3K]4 years ago
4 0

To solve this question, we want to get t by itself, on one side. To do that, the first step is the get all terms with 't' on one side and all the constants (numbers) on the other side.

4t + 2 = 7 t - 7

Since the left side has a greater number of t, let's move all of the terms with t there.

4t - 4t + 2 = 7t - 4t - 7

2 = 3t - 7

Now we move the numbers

2 + 7 = 3t - 7 + 7

3t = 9

Now we get t by itself.

3/3t = 9/3

t = 3

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Tju [1.3M]

$ 1850 was invested in 9% account

<u>Solution:</u>

Given that  

Total amount invested by man in two saving accounts = $9493

Simple interest on one account =9%

Simple interest on second account = 10%

Total interest earned = $930.80

Need to determine amount invested in 9 % account.

Let assume amount invested in account where Simple Interest is 9% = x

And assume amount invested in account where Simple Interest is 10% = y

As total amount invested in two accounts is $9493

=> x + y = 9493      

=> y = 9493 - x                              ------(1)

\text { Simple Interest }=\frac{\text { Amount Invested } \times \text {rate of interest } \times \text {time}}{100}

\begin{array}{l}{\text { Simple interest when rate of interest is } 9 \%=\frac{x \times 9 \times 1}{100}=\frac{9 x}{100}} \\\\ {\text { Simple interest when rate of interest is } 10 \%=\frac{y \times 10 \times 1}{100}=\frac{10 y}{100}}\end{array}

As total interest earned = $930.80

\begin{array}{l}{\Rightarrow \frac{9 x}{100}+\frac{10 y}{100}=930.80} \\\\ {\Rightarrow 9 x+10 y=930.80 \times 100} \\\\ {\Rightarrow 9 x+10 y=93080}\end{array}

On substituting value of y from equation(1) in above equation , we get

9x + 10 (9493 – x) = 93080

=> 9x  + 94930 – 10x = 93080

=> -x = 93080 – 94930

=> -x = -1850

=> x = 1850  

Amount invested in account where Simple Interest is 9% = x  = $1850

Hence $1850 was invested in 9% account.

5 0
3 years ago
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Fynjy0 [20]
Passes through (-5, 5) & has a slope of -6.

We want the answer in slope-intercept form.

** Remember! Slope-intercept form : y=mx+b where m=slope, b=y-intercept.

Simply plug everything in :)

y = mx + b

y = (-6)x + (5)

Simplify.

y = -6x + 5

~Hope I helped!~
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kari74 [83]

Answer:

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Step-by-step explanation:

Right : Wrong

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ale4655 [162]

Answer:

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Step-by-step explanation:

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D. There is one variable in the expression.

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<em>Note. </em>

<em>Assumed 1/2 is given in Option B, otherwise all statements are false</em>.

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<em />

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<em />

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