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Aliun [14]
3 years ago
10

Which expression is equivalent to Square root of 80 ?

Mathematics
1 answer:
Lana71 [14]3 years ago
3 0

Answer:

4i√5

Step-by-step explanation:

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The diagram shows a 5 cm x 5 cm x 5 cm cube.
Nitella [24]

Answer:

8.7 cm

Step-by-step explanation:

The question is a 2-two-step Pythagoras theorem. (c^2 = a^2 + b^2)

Consider as such, If I were to draw a diagonal line along the base of the cube what is the length of the diagonal line. To find out that we use the theorem. We can substitute a for 5 and b for 5 as well. So

a^2 +b^2 = c^2

5^2 + 5^2 = c^2

25 + 25 = c^2

√50 = c

Then since the line side of the cube is on a 3d angle we need to do the same process again but now using the imaginary diagonal line that we just calculated and the height (5).

a^2 +b^2 = c^2

√50^2 + 5^2 = c^2

50 + 25 = c^2

√75 = c

c = 8.6602...

<em>when rounded to 1 d.p.</em>

c = 8.7

Line AB is 8.7 cm long.

7 0
4 years ago
After 1 minute, a submarine had descended to −280 feet. After 9 minutes, the submarine had descended to −360 feet. Assuming a li
adelina 88 [10]

Answer:

the answer is 640

Step-by-step explanation:

-280-360 = 640

d(t)=-360

= 360*d*t

4 0
3 years ago
Three numbers are in the ratio 1:3:5 and their sum is 270. find the largest number.
Sphinxa [80]

Answer:

<u>150</u>

Step-by-step explanation:

Let :

⇒ The numbers can be denoted as <u>x</u>, <u>3x</u>, and <u>5x</u>

<u />

=============================================================

Solving :

⇒ It mentions their sum is 270

⇒ x + 3x + 5x = 270

⇒ 9x = 270

⇒ x = 30

=============================================================

Largest number :

⇒ 5x

⇒ 5(30)

⇒ <u>150</u>

8 0
2 years ago
Read 2 more answers
A classic car is now selling for $2000 less than two times its original price. If the selling price is now $20,000, what was the
Otrada [13]

Answer:

$11,000

Step-by-step explanation:

Because,

20,000 + 2000 = 22,000

22,000 / 2 = 11,000

3 0
3 years ago
Evaluate tan 11 pi/6
Nadusha1986 [10]

Answer:

tan 11 pi dived by 6 is equal to -118.307586549

4 0
3 years ago
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