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3 years ago

Can someone please help me solve this question 17a + 1b - 7a + 3b + 17

Mathematics

2 answers:

Vlada [557]3 years ago

7 0

Simplify 1 × b to b

17a + b - 7a + 3b + 17

Collect like terms

(17a - 7a) + (b + 3b) + 17

Simplify

tangare [24]3 years ago

4 0

Answer:

10a + 4b + 17

Step-by-step explanation:

Combine like terms (terms with the same amount of variables & same variables). Reorder the terms:

17a - 7a + 1b + 3b + 17

(17a - 7a) + (b + 3b) + 17

10a + 4b + 17

10a + 4b + 17 is your answer.

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How can you make your answer (41-13i)/(25) into a+bi form?

KengaRu [80]

Hello, do you know that for any a, b and c real numbers with c different from 0 the following is correct?

$\dfrac{a+b}{c}=\dfrac{a}{c}+\dfrac{b}{c}$

Then,

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So,

$a=\dfrac{41}{25}\\\\b=\dfrac{-13}{25}$

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2 years ago

When the sum of 5 and three times a positive number is subtracted from the square of the number, 0 results. Find the number.

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$x-the\ number\\\\x^2-(5+3x)=0\\\\x^2-5-3x=0\\\\x^2-3x-5=0$

$Use\ the\ quadratic\ formula:\\a^2x+bx+c=0\\\\\Delta=b^2-4ac\\\\if\ \Delta > 0\ then\ x_1=\dfrac{-b-\sqrt\Delta}{2a}\ and\ x_2=\dfrac{-b+\sqrt\Delta}{2a}\\\\if\ \Delta=0\ then\ x_0=\dfrac{-b}{2a}\\\\if\ \Delta < 0\ then\ no\ solution$

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$Answer:\ \boxed{x=\dfrac{3+\sqrt{29}}{2}}$

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