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crimeas [40]
3 years ago
9

NEED HELP ASAP

Mathematics
1 answer:
Gnoma [55]3 years ago
6 0

Answer:

sorry i thought i knew the aanswer :(

Step-by-step explanation:

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2. How much heat is needed to warm .052 kg of gold from 30°C to 120°C
Doss [256]

Answer: 90 degrees Celsius

Step-by-step explanation:

120-30 = 90

7 0
3 years ago
The magnitude and direction of two vectors are shown in the diagram. What is the magnitude of their sum?
Serjik [45]

Answer:

2√5

Step-by-step explanation:

Using the formula for calculating resultant

R = √Fx + Fy

\sum Fx = -2sin 45 + 4 cos 45

\sum Fx =  2cos45

\sum Fx = 2(1/√2)

\sum Fx   = 2/√2

Similarly;

\sum Fy = 2 cos 45 + 4 sin45

\sum Fx  = 2(1/√2) + 4(1/√2)

\sum Fx = 6/√2

Magnitude = √(2/√2)²+6/√2)²

Magnitude = √4/2 + 36/2

Magnitude = √2+18

Magnitude = √20

Magnitude = 2√5

Hence the magnitude of their sum is 2√5

6 0
2 years ago
Read 2 more answers
When a number is decreased by 25%, the result is 22. What is the original number to the nearest tenth?
Ilya [14]

The decrease is 25% so this means that 22 is 75% of the original number (100% - 25% = 75%)

Divide 22 by 75%:

22/ 0.75 = 29.3

The answer is 29.3

7 0
3 years ago
Help me plz show work​
FinnZ [79.3K]

Answer:

c. 2,320miles

Step-by-step explanation:

29 divided by 1/4 = 116

116*20=2,320

7 0
2 years ago
What is the simplified value of the exponential expression 16^1/4 ?<br> 1/2<br> 1/4<br> 2<br> 4
Archy [21]

Answer:

2

Step-by-step explanation:

Add fractions, divide by wholes, and add the decimal point

Hope this helped, and please mark as Brainliest :)

8 0
2 years ago
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