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3 years ago

What is the square root of - 121

Mathematics

2 answers:

ch4aika [34]3 years ago

5 0

The answer of square root of -121 is 11

Mrac [35]3 years ago

5 0

-11.
-121/11=-11
thats how i do it, its probably the wrong way to do it though,
anyway, Hope I helped, :-) bye bye.

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PLEASE SOMEONE HELP ME ANSWER THIS !!!!

Mumz [18]

Step-by-step explanation:

Part A: Linear Equation.

One of the points is (0,15). This means 0,15 is the y intercept so b=15.

We can find the slope

$\frac{5 - 15}{1 - 0 } = \frac{ - 10}{1} = - 10$

So our equation is

$y = - 10x + 15$

Part B: Exponential Equation

We know that

$15 = a \times b {}^{0}$

B to the zero power is 1 so

$15 = a$

This means a =15. Now let find b.

$5 = 15 \times b {}^{1}$

$\frac{1}{3} = b$

So the equation is

$y = 15( \frac{1}{3} ) {}^{x}$

6 0

3 years ago

a mother otter is fed 7 fish for every 2 fish for its cub a) if a cub has eaten 14 fish , how many fish did the mother eat ? ple

jek_recluse [69]

Answer:

The mom ate 49 fish.

Step-by-step explanation:

This question can be solved by a rule of three.

a mother otter is fed 7 fish for every 2 fish for its cub

if a cub has eaten 14 fish , how many fish did the mother eat ?

For each 2 fish cub eats, the mon eats 7. How much has the mom eaten if the cub has eaten 14?

2 - 7

14 - x

2x = 14*7

Simplifying by 2

x = 7*7

x = 49

The mom ate 49 fish.

5 0

3 years ago

Find the value of each variable<br> x = <br> y=

Karolina [17]

Answer:

x=9

y= $9\sqrt{2}$

Step-by-step explanation:

This is a special type of triangle known as a 45-45-90 triangle.

The ratio for the sides of this triangle are x:x:x $\sqrt{2}$

Meaning that the two sides other than the hypotenuse are equal, so in this triangle x=9 because it is not a hypotenuse.

The hypotenuse, however, is the value of one side multiplied by $\sqrt{2}$ .

In this case it is 9, so 9* $\sqrt{2}$ = $9\sqrt{2}$

7 0

2 years ago

I need help with this

Kruka [31]

Answer:

Step-by-step explanation:

The formula of a volume of a cylinder:

$V=\pi r^2H$

r - radius

H - height

From the pictue we have r = 5in and H = 3in. Substitute:

$x=\pi(5^2)(3)=\pi(25)(3)=75\pi\ in^3$

$\pi\approx3.14$

Therefore

$x=(75)(3.14)=235.5\ in^3$

5 0

3 years ago

Read 2 more answers

2x - 3 = - ( 4x + 9 )

mafiozo [28]

2x-3 = -(4x+9)

2x-3 = -4x-9

2x+4x=3-9

6x=-6

x=-1

3 0

3 years ago