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1 year ago

What step is incorrect

Mathematics

2 answers:

tatyana61 [14]1 year ago

5 0

Answer:

Have a great day!!

fiasKO [112]1 year ago

4 0

Answer:

See below.

Step-by-step explanation:

Step one is incorrect. When distributing 3 to x and -1, you have to multiply 3 and x, and 3 and -1, making it 3x-3.

What this person did was only multiply 3 and x, but forgot about -1.

-hope it helps

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F(x)=x^-2x+4 find f(-1)

otez555 [7]

Hello,

$f(x)=x^{-2}+4\\

f(-1)=(-1)^{-2}+4= \dfrac{1}{(-1)^2} +4=1+4=5\\
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2 years ago

Trapezoid JKLM is shown on the coordinate plane below:

ololo11 [35]

Answer:

( 1, -4)

Step-by-step explanation:

To find this answer you go over 2 to the right on the x-axis, then go down 6 on the y-axis. This gives ( 1, -4).

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3 years ago

To eliminate the x terms and solve for y in the fewest steps, by which constants should the equations be multiplied by before ad

raketka [301]

Answer:

Step-by-step explanation:

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2 years ago

Read 2 more answers

What is the quotient of 3.12 x 108 and 2.6 x 105 expressed in scientific notation?

Gnoma [55]

Answer:

1.2 * 10^3

Step-by-step explanation:

3.12 * 10^8

=========

2.6 * 10^5

Start by doing 3.12 / 1.6 = 1.2 and that is the correct number of sig digs.

Now get the power on the 10. When dividing, the powers subtract.

10^(8 - 5)

10^ 3

The answer is 1.2 * 10^3

7 0

2 years ago

The sum S of the first n integers is given by the formula S=1/2n(n+1). How many integers must be taken to have a sum of

statuscvo [17]

Answer:

Step-by-step explanation:

We require to solve for n, hence

$\frac{1}{2}$ n(n + 1) = 325

multiply both sides by 2 to eliminate the fraction

n(n + 1) = 650

n² + n = 650

subtract 650 from both sides to have equation in standard form

n² + n - 650 = 0 ← in standard form

(n + 26)(n - 25) = 0 ← in factored form

equate each factor to zero and solve for n

n + 26 = 0 ⇒ n = - 26

n - 25 = 0 ⇒ n = 25

however, n > 0 ⇒ n = 25

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2 years ago