All categories

4 years ago

Which choice correctly shows the solution(s) of the equation x2 = 121?

Mathematics

1 answer:

kvasek [131]4 years ago

7 0

Hello from MrBillDoesMath!

Answer:

Choice D, x = +\ sqrt(121)

Discussion:

x^2 = 121 => take square roots of both sides

x = +\- sqrt(121) => as sqrt(121) = +\- 11

x = +\- 11

The closest answer is D as it includes both values of x, unlike choices A and B which include a single value of the square root

Thank you,

MrB

You might be interested in

Jake ate 4/8 of a pizza .millie ate 3/8 of the same pizza .how much of the pizza was eaten by jake and Millie

stealth61 [152]

The answer is 7/8 because they have the same denominator so you just add the numerator witch is 4+3=7 so you keep the denominator so its 7/8

8 0

3 years ago

Read 2 more answers

Four 1 1/6 inch wood strips are used to form

worty [1.4K]

Answer:

14/3 in. or 4 2/3 in.

Step-by-step explanation:

Perimeter is the sum of all sides.

P=4s

Fill in known numbers

$P = 4(1\frac{1}{6} )$

Solve

$P=\frac{14}{3}$

5 0

3 years ago

Write the expression as a sum and/or a difference of logarithms, with all variables to the first degree.

andreyandreev [35.5K]

Answer:

ln 2 + 2 ln x + 8 ln y

Step-by-step explanation:

Use of properties

log ab = log a + log b
log a^b = b log a

Given expression

In 2x^2y^8

Simplifying

In 2x^2y^8 =
ln 2 + ln x^2 + ln y^8 =
ln 2 + 2 ln x + 8 ln y

7 0

4 years ago

11. A set of weights includes a 5 lb bar and 8 pairs of weight plates. Each pair of plates weighs 10 lbs. If x

Marat540 [252]

X is amount of plates 10lbs and f(x) is the function

4 0

3 years ago

I am having trouble with number 2. Please show how the answer was gotten.

Andrews [41]

We know how we got 90, since a right angle is 90 degrees,

180 degrees are in a triangle.

180-90=90

Find the pair that equals 90 so you get 180 degrees!

If you have more questions don’t have hesitation to ask!

Or add all number to get 180 degrees!

4 0

3 years ago