3 years ago

What is the simplified square root of -20?

Mathematics

1 answer:

poizon [28]3 years ago

5 0

Answer:

do you mean -2 $\sqrt{5}$ ?

Step-by-step explanation:

You might be interested in

Can someone explain if I am wrong?

snow_lady [41]

Answer:

Step-by-step explanation:

A. (b - 10)(b + 10) = 180

$b^{2}$ -100 = 180

$b^{2}$ = 280

b = $\sqrt{280}$

b = 2 $\sqrt{70}$

Your A is correct.

B. 2 $\sqrt{70}$ - 10 = c

c = 6.733200531 = 6.73 Try rounding to 3 significant figures.

C. 2 $\sqrt{70}$ + 10 = d

d = 26.73320053 = 26.7

You are correct in all 3 answers. Perhaps you should try rounding to 3 significant figures for your c and d values.

I hope this helps!! ^-^

8 0

3 years ago

Read 2 more answers

X squared + 12 x + 3 = 7 solve by completing the square

GarryVolchara [31]

ax^2 + bx + c

x^2 + 12x + 3 = 7

x^2 + 12x = 4

Take b, half it, then square it--

x^2 + 12x + 36 = 40

That equation becomes

(x+6)^2 = 40

+ 6 = ± (square root of 40)

= 0.324555

= −12.3246

5 0

4 years ago

Read 2 more answers

Please explain how to simplify it.

denpristay [2]

Which question do u want me to answer?

8 0

3 years ago

Read 2 more answers

The first number in the pattern is 32 the rule is to add 27

svetlana [45]

Answer:

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

What is 1/10 of 3.0<br> Can someone answer this

crimeas [40]

Answer:0.3

Step-by-step explanation:

5 0

3 years ago