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3 years ago

Every positive real number has a positive and a negative square root, the ________ root is called the principal root. *

Mathematics

1 answer:

fomenos3 years ago

5 0

9514 1404 393

Answer:

B) positive

Step-by-step explanation:

For even-index roots, which may be either positive or negative, the positive root is called the principal root.

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Which system is represented by the graph

alexandr1967 [171]

Answer:

option A. 3x - y = 2 and 3x - y = 1

Step-by-step explanation:

Using the rule of y-intercept which is the value of y when x equals 0

Option A: 3x-y=2 and 3x-y=1

y-intercepts will be ⇒ -2 and -1

Option B: 3x+y=2 and 3x-y=1

y-intercepts will be ⇒ 2 and -1

Option C: 3x-y=2 and 3x+y=1

y-intercepts will be ⇒ -2 and 1

Option D: 3x+y=2 and 3x+y=1

y-intercepts will be ⇒ 2 and 1

Comparing the results with the y-intercepts from the graph

From the graph the system of equation intersects with y-axis, (which mean x=0), at y = -2 , -1

So, the system which is represented by the graph is option A

6 0

4 years ago

Find the area of the triangle with the given measurements. Round the solution to the nearest hundredth if necessary. B = 105°, a

Akimi4 [234]

Answer:

The area of triangle is $110.10cm^{2}$

Step-by-step explanation:

It is given that AB=19cm, BC=12cm and ∠B=105°

Now, Area of the triangle ABC= $\frac{1}{2}acsinB$

= $\frac{1}{2}{\times}12{\times}19{\times}sin105^{\circ}$

= $6{\times}19{\times}(0.965)$

= $110.10cm^{2}$

Thus, the area of triangle is $110.10cm^{2}$

4 0

4 years ago

Estimate the solution to the following system of equations by graphing.

Basile [38]

Answer:

Is one of them supposed to by x?

Step-by-step explanation:

6x- y = 11

-4x + 5y = 8

With a system of equations, you need to solve for one variable first and the substitute to find the other variables. y is easier to solve for.

6x - y =11 Subtract 6x to both sides.

-y = -6x +11 Multiply by -1 on both sides

y = 6x - 11

We now subsitute y with 6x - 11 in the other equation.

-4x + 5y = 8

-4x + 5(6x-11) = 8

-4x +30x -55 =8

26x = 63

x = 63/26

and now we subsitute this to solve for actual y.

y= 6x -11

y= 6*(63/26)-11

7 0

3 years ago

Please HELP

N76 [4]

Answer:

12y=m

Explaination:

because there's 12 months in a year

I hope this is right

8 0

3 years ago

Please Help Me Now :'(

MArishka [77]

BHF= 106
HGD=106
EGD = 74
EGC= 106

May be wrong but hope this helped!

8 0

3 years ago