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dmitriy555 [2]
4 years ago
15

What is the solution to the system of equations? {x+2y=10y=12x+3

Mathematics
1 answer:
Marianna [84]4 years ago
5 0

The solution to given system of equations are (x,y) = (\frac{4}{25} , \frac{123}{25})

<em><u>Solution:</u></em>

Given that we have to find solution to the system of equations

<em><u>Given equations are:</u></em>

x + 2y = 10  ------ eqn 1

y = 12x + 3 ------ eqn 2

We can solve the above equations by substitution method

<em><u>Substitute eqn 2 in eqn 1</u></em>

x + 2(12x + 3) = 10

x + 24x + 6 = 10

25x = 10 - 6

25x = 4

x = \frac{4}{25}

<em><u>Substitute the above value of x in eqn 2</u></em>

y = 12(\frac{4}{25}) + 3\\\\y = \frac{48}{25} + 3\\\\y = \frac{48+75}{25}\\\\y = \frac{123}{25}

Thus the solution to given system of equations are (x,y) = (\frac{4}{25} , \frac{123}{25})

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3 years ago
What is the sum of x³ + 5x²-7 and
Nitella [24]

The mistake that Danielle made is from the final equation of the polynomial. She did not write the degree of polynomial correctly. It should be 6x⁶ +2x²+ 2x - 8.

<h3>What is polynomial?</h3>

A polynomial is defined as a mathematical expression that has a minimum of two terms containing variables or numbers. A polynomial can have more than one term.

To determine the sum of x³ + 5x²-7 and 5x³ - 3x² + 2x - 1

Danielle's Work :

(x³ + 5x² - 7) + (5x³ - 3x² + 2x - 1)

x³ + 5x³ + 5x² - 3x² + 2x - 7 - 1

6x⁶ +2x⁴ + 2x - 8

She did not write the degree of polynomial correctly

Correct Work :

(x³ + 5x² - 7) + (5x³ - 3x² + 2x - 1)

we have to open the brackets above

x³ + 5x² - 7 + 5x³ - 3x² + 2x - 1

x³ + 5x³ + 5x² - 3x² + 2x - 7 - 1

6x⁶ +2x²+ 2x - 8

Note that Danielle made the error in this step: 6x⁶ +2x⁴ + 2x - 8

The solution for the above is -2x² and not 2x⁴ as she wrote in her final equation.

Hence, the correct polynomial would be 6x⁶ +2x²+ 2x - 8

Learn more about polynomial here:

brainly.com/question/11536910

#SPJ1

7 0
2 years ago
Expression 7 + 9/4 can also be written in the form ofc÷a^b . A = b= c=
Arlecino [84]
<h3>Answer: a = 37, b=2 and c=2.</h3>

Step-by-step explanation: Given expression 7 + 9/4.

Let us simplify given sum of fractions by taking common denominator, we get

\frac{7}{1} +\frac{9}{4}

Common denominator is 4.

Therefore, multiplying top and bottom of 7/1 by 4, we get

\frac{7\times 4}{1\times 4} +\frac{9}{4} = \frac{28}{4} +\frac{9}{4}.

We got same denominators,

So, combining top numbers, we get

\frac{28+9}{4}=\frac{37}{4}

We can read 37/4 as 37 divided by 4.

Therefore, 37 ÷ 4.

Let us write 4 as the power of 2.

4= 2^2.

37 ÷ 2^2

On comparing c÷a^b and 37 ÷ 2^2, we can see..

<h3>a = 37, b=2 and c=2.</h3>
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Write the equation in slope-intercept form of the line that
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