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mezya [45]
3 years ago
9

A classmate tells you that there are two Fahrenheit temperature that is the same as the Celsius temperature. They tell you it is

50 degrees and -40 degrees. Is your classmate correct or incorrect explain your reasoning.
Mathematics
1 answer:
8090 [49]3 years ago
7 0

Answer:

Step-by-step explanation:

the conversion for farenheit to celsius is to subtract 32 and multiply by 5/9.

-40-32 is -72. multiply that by 5/9 and that is -40

50-32 is 18. multiply that by 5/9 and you get 10. so no she's wrong

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A triangle has a perimeter of 33cm. If the three sides of the triangle are n, 3n−4, and 3n−5, what is the length of each side?
lara [203]

Just did this one.


The perimeter is the sum of the sides.

n + (3n - 4) + (3n - 5) = 33

7n - 9 = 33

7n = 42

n = 6

3n-4=18-4=14

3n-5=13

Check: 6+14+13=33, good

Answer: 6 cm, 14 cm, 13 cm

6 0
3 years ago
The boat travels x miles per hour from one island to another island in 2.5 hours. The boat travels 5 miles per hour faster on th
notka56 [123]
The speed to the island is x. The speed to return is x+5.

The distance is the same so, 2.5 multiplied by x = 2×(x+5).

It took 2.5 hrs to get there and 2 hrs to return. Now all we have to do is solve.

 2.5*x = 2x + 10

 .5x = 10
x=20

 Therefore, the distance between islands is 2.5 × 20 = 50 miles.

hope this helps!

6 0
3 years ago
Which properties of logarithms help you simplify log 200 + log 5 - log 100? (Select all that apply.)
Readme [11.4K]

Answer:

Step-by-step explanation:

Which properties of logarithms help you simplify log 200 + log 5 - log 100? (Select all that apply.)

a)quotient property

b)power property

c)change of base rule

d)product property

7 0
3 years ago
Please Help...........
klasskru [66]
I believe the answer might be:
x = 28/19

Steps:
Expand
3(5 - x)/2 - 4(3 + 2x)/5

-3x + 15 - 8x + 12
------------ -----------
2 5

Find the LCD for the equation above:
(15-3x) * 5 - (12+8x) * 2
------------- --------------
10 10

Now we combine them since the denominators are equal:
5(-3+15) - 2(8x+12)
--------------------------
10

We expand above:
-31x+51
-----------
10
6 0
3 years ago
6 cm
Svetach [21]

Answer:

3 cm base 4 cm height

Step-by-step explanation:

6 0
3 years ago
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