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3 years ago

What is the value of "n" if the formula is a(n)=57+(n-1)×4

Mathematics

1 answer:

Romashka [77]3 years ago

4 0

You only know. The n stands for the term number.

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Tom has 2 more than 5 times the number of CD’s that Jane has. Jane has 5 CD’s. Write an

Soloha48 [4]

Step-by-step explanation:

t=2+5×j

j=5

t=2+5×5

t=27

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2 years ago

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What is the slope between the points (-3, 7) and (-5, 4)

IrinaVladis [17]

Answer:

3/2

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3 years ago

5 × 4) × (16 ÷ 8) × (24 − 22) =

saw5 [17]

Answer:

Step-by-step explanation:

(5 * 4) = 20

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3 years ago

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Write the following phrase as an expression<br> "the product of 6 and n"

Kamila [148]

Answer:

Step-by-step explanation:

A product refers to the multiplication of two or more numbers.

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1 year ago

Using the quadratic formula to solve x2 + 20 = 2x, what are the values of x?

jeka94

by Quadratic formula , $x^2 + 20 = 2x$ , values of x are $x = 1 \pm (1)i\sqrt{19}}$ . None of mentioned options are correct according to question!

<u>Step-by-step explanation:</u>

Here we have , expression x2 + 20 = 2x or , $x^2 + 20 = 2x$ .

We know that Quadratic formula is :

$x = \frac{-b \pm \sqrt{b^{2}-4ac}}{2a}$

$x^2 + 20 = 2x$

⇒ $x^2-2x+20=0$

$a=1\\b=-2\\c=20$

Putting this value in equation $x = \frac{-b \pm \sqrt{b^{2}-4ac}}{2a}$ :

⇒ $x = \frac{-b \pm \sqrt{b^{2}-4ac}}{2a}$

⇒ $x = \frac{-(-2) \pm \sqrt{(-2)^{2}-4(1)(20)}}{2(1)}$

⇒ $x = \frac{2 \pm \sqrt{4-80}}{2}$

⇒ $x = (\frac{2 \pm 2i\sqrt{19}}{2})$

⇒ $x = 1 \pm (1)i\sqrt{19}}$

Therefore , by Quadratic formula , $x^2 + 20 = 2x$ , values of x are $x = 1 \pm (1)i\sqrt{19}}$ . None of mentioned options are correct according to question!

7 0

3 years ago