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3 years ago

The difference between 3 times a number x and 2 is 19. What is the value of x?

Mathematics

1 answer:

Travka [436]3 years ago

6 0

Answer:

Step-by-step explanation:

the answer is 7

21 is 3 times 7

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Jane borrows $4000 dollars from her bank.she has a simple interest loan at 5% interest rate and will pay it back over 4 years ho

Tom [10]

4000x.05=200*4= 800

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3 years ago

Identify the quotient in the form a + bi. HELP ASAP PLEASE!!

Step2247 [10]

Solving the expression $\frac{4-5i}{2+3i}$ we get $-\frac{7}{13}-\frac{22i}{13}$

So, Option A is correct.

Step-by-step explanation:

We need to solve the expression: $\frac{4-5i}{2+3i}$

Multiplying and dividing by 2-3i

$=\frac{4-5i}{2+3i}*\frac{2-3i}{2-3i}\\=\frac{4-5i*2-3i}{2+3i*2-3i}\\=\frac{4(2-3i)-5i(2-3i)}{(2)^2-(3i)^2}\\=\frac{8-12i-10i+15i^2)}{4-9i^2}\\We\,\,know\,\, i^2=-1\\=\frac{8-12i-10i+15(-1)}{4-9(-1)}\\=\frac{8-15-12i-10i}{4+9}\\=\frac{-7-22i}{13}\\=-\frac{7}{13}-\frac{22i}{13}$

So, solving the expression $\frac{4-5i}{2+3i}$ we get $-\frac{7}{13}-\frac{22i}{13}$

So, Option A is correct.

Keywords: Complex numbers

Learn more about Complex numbers at:

#learnwithBrainly

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3 years ago

Which phrase describes the algebraic expression B2+7?

svp [43]

Answer:

180

Step-by-step explanation:

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A right triangle has a hypotenuse length of 13 units. One leg has a length of 12 units. Which equation can be used to determine

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Answer:

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Can someone answer this please<br> Questions 19 and 21

Olegator [25]

Answer:

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Step-by-step explanation:

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3 years ago