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expeople1 [14]
3 years ago
5

Solve the equation : 3x - 2 = 4x + 5How many solutions are there?​

Mathematics
2 answers:
Nookie1986 [14]3 years ago
8 0

Answer:

one solution

Step-by-step explanation:

Given

3x - 2 = 4x + 5 ( subtract 4x from both sides )

- x - 2 = 5 ( add 2 to both sides )

- x = 7 ( multiply both sides by - 1 )

x = - 7 ← the one solution

VARVARA [1.3K]3 years ago
4 0

Answer:

<h2>one solution, x = -7</h2>

Step-by-step explanation:

3x-2=4x+5\qquad\text{add 2 to both sides}\\\\3x-2+2=4x+5+2\\\\3x=4x+7\qquad\text{subtract}\ 4x\ \text{from both sides}\\\\3x-4x=4x-4x+7\\\\-x=7\qquad\text{change the signs}\\\\x=-7

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Answer:

Test it.  Is 1.752 close to 8?

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Step-by-step explanation:

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4 years ago
Calculate the new balance of an account that has been sitting for three years with a 1.5% interest rate and had an initial depos
maksim [4K]

Answer:

$5225

Step-by-step explanation:

Use the formula for the amount after simple interest: A = P(1 + rt)

"A" is the final amount, or balance.

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"r" is the rate of interest in decimal form.

"t" is the time.

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P = 5000

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Convert the rate to decimal form by dividing by 100, or moving the decimal place two places to the left.

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4 0
3 years ago
The Candy Shack sells 138 pounds of candy on Tuesday. They sold 71.76 pounds of jelly beans. What percent of the candy sold was
Pepsi [2]

<u>Answer:</u>

<h2>52% were jelly beans!</h2>

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<em>Cross </em><em>multiply </em><em>the </em><em>following:</em>

<em>\frac{x}{100}  =  \frac{71.76}{138}</em>

<em>x </em><em>times </em><em>1</em><em>3</em><em>8</em><em> </em><em>=</em><em> </em><em>1</em><em>3</em><em>8</em><em>x</em>

<em>100 </em><em>times </em><em>7</em><em>1</em><em>.</em><em>7</em><em>6</em><em> </em><em>=</em><em> </em><em>7</em><em>,</em><em>1</em><em>7</em><em>6</em>

<em>Divide </em><em>both </em><em>sides </em><em>by </em><em>1</em><em>3</em><em>8</em><em>:</em>

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<h3><em>x </em><em>=</em><em> </em><em>5</em><em>2</em><em>%</em></h3>
6 0
3 years ago
Read 2 more answers
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