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Temka [501]
3 years ago
13

Can someone plz help me with these

Mathematics
1 answer:
svet-max [94.6K]3 years ago
3 0

Answer:

11: -20

12: -4/9

13: 15

14:  1/2

15: 9 yards

16: 1/10 m^3 or 0.1 m^3

17: 51 degrees

Step-by-step explanation:

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6sqrt20 + 8sqrt5 - 5sqrt45
marta [7]

Answer:

11.1803398875

Step-by-step explanation:

4 0
3 years ago
Why are decimals called decimals​
GREYUIT [131]

Answer:

A decimal is a fraction written in a special form. ... Decimal comes from the Latin word decimus, meaning tenth, from the root word decem, or 10. The decimal system, therefore, has 10 as its base and is sometimes called a base-10 system. Decimal can also specifically refer to a number in the decimal system.

Step-by-step explanation:

According to google

4 0
3 years ago
Natasha was thinking of a number. Natasha doubles it and gets an answer of 93. What was the original number?
saul85 [17]

Answer:

46.5

Step-by-step explanation:

i divided 93 by 2 and got 46.5

hope this helps :)

4 0
3 years ago
Read 2 more answers
A local electronics store raised its prices on headphones by 20%. The headphones that Stan wants to buy now cost $36. How much d
atroni [7]
You would do 36$ -20% =28.8
4 0
3 years ago
Wires are attached to a pole to make it more secure. The diagram shows one of those wires having a length of 220 feet. The angle
LuckyWell [14K]
The wire, the pole and the segment joining the leg of the pole to the wire in the ground form a right triangle whose hypotenuse is the wire, and the side opposite to the angle 36° is the pole.

By right triangle trigonometry, sin36°=(opposite side)/(hypotenuse.)

Substituting, we have 0.588=(opposite side)/220, thus the length of the opposite side, which represents the length of the pole, is 

                                       0.588*220 ft=129.3 ft
3 0
3 years ago
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