mariahval99 mariahval99

13-04-2019
Mathematics

contestada

Which expression is equal to 4√20 - 3√45

A.11√5

B.−11√5

C.√5

D.−√5

Respuesta :

wegnerkolmp2741o wegnerkolmp2741o

13-04-2019

Answer:

D.−√5

Step-by-step explanation:

4 sqrt(20) -3 sqrt(45)

We know that sqrt(ab) = sqrt(a) sqrt(b)

4 sqrt(4) sqrt(5) - 3 sqrt(9) sqrt(5)

4 *2 sqrt(5) - 3 *3 sqrt(5)

8 sqrt(5) - 9 sqrt(5)

- sqrt(5)

Answer Link

Otras preguntas

Right Triangle Trig question. Please respond with a legitimate answer and with a thorough explanation.

Mrs. Knighten brought a box of c cookies and split them evenly between the 25 students in her classroom. Write an expression for the number of cookies each stud

By the road to the contagious hospital under the surge of the blue mottled clouds driven from the northeast—a cold wind. Beyond, the waste of broad, muddy field

Absorbed lipids are transported from intestinal epithelial cells to the lymphatic system in what form

Describe the main parts of a proof

a cylinder has a height of 9 cm and a radius of 15 cm what is the exact volume A( 225 pi B( 405 pi C(675 pi D( 90 pi

Which is an image of a scintillation counter?

PLEASE HELP ME ASAP!!!!!!!!!!!!

Answer needed ASAP!!!!

In a previous exercise we formulated a model for learning in the form of the differential equation dp dt = k(m − p) where p(t) measures the performance of someo