Combine these radicals. 8√5 + 2√45

Mathematics

2 answers:

Greeley [361]3 years ago

8 0

8√5 + 2√45
= 8√5 + 6√5
= 14√5

hope it helps

kobusy [5.1K]3 years ago

5 0

The answer would be 14 square root 5

You might be interested in

Identify the mean of each distribution.

Setler [38]

Answer:

Distribution A : 50

Distribution B : 100

Distribution C : 200

Second part is : B,C,A

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Determine which consecutive integers do not have a real zero of between them. a. (–6, –5) c. (–2, –1) b. (–5, –4) d. (1, 2) Plea

svetoff [14.1K]

We have by the intermediate value theorem that if a continuous function takes values both above and below zero at 2 points, there is a zero of the function in-between. We have that polynomials are continues. Let's calculate f(-6) and f(-5). f(-6)=-36 while f(-5)=-1. Thus, we cannot conclude that there is a root between them.
F(-2)=8, f(-1)=-1, so there is a flip; a zero must exist between them.
F(1)=-1, f(2)=20, so again there is a change of signs.
f(-5)=-1, f(-4)=14 so there is a root still.
We have that the only choice that does not have a root between the integers is choice a.

7 0

3 years ago

Solve the following system of equations and show all work. y = -x^2 + 4 y = 2x + 1

Pavel [41]

-x^2 + 4 = 2x + 1
-x^2 - 2x + 4 - 1 = 0
-x^2 - 2x + 3 = 0
(x + 3)(-x + 1)= 0

x + 3 = 0 -x + 1 = 0
x = -3 -x = -1
x = 1

so x = -3 and x = 1

8 0

3 years ago

Ashley purchased a prepaid phone card for $ 25 . Long distance calls cost 17 cents a minute using this card. Ashley used her car

Lynna [10]

124.5 minutes = 2 hours and 7 minutes and 5 seconds

7 0

3 years ago

Read 2 more answers

Please simplify this fraction c:

Liula [17]

F you just want to see the really short way, just skip down to AAAAAAAAAAAA

so, here is the long explanation
exponential properties
$x^{-m}= \frac{1}{x^m}$

don't forget pemdas
2x^2=2(x^2)

so
$\frac{2x^{-4}}{3xy}$ = $\frac{2 \frac{1}{x^4} }{3xy}= \frac{2}{3x^5y}$

AAAAAAAAAAAAAAAAAAAAAAAA
so we see
the original equatio is
$\frac{2x^{-4}}{3xy}$

remember
$\frac{ab}{cd} =( \frac{a}{c})( \frac{b}{d})$

so we can seperate the constants
$\frac{ab}{cd} =( \frac{2}{3})( \frac{x^{-4}}{xy})$

we know that the placeholders cannot affet the position of the constants unless they are grouped together which they are not

terfor the answer must have 2/3 in it

the only one that hsa that is A

ANSWER IS A

3 0

3 years ago

Read 2 more answers