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LiRa [457]
3 years ago
8

Which of the following values is equal to − (−3.7)? −3.7 0 3.7 4 (not it)

Mathematics
2 answers:
Anton [14]3 years ago
7 0

Answer:

C) 3.7

Step-by-step explanation:

The given expression is -(-3.7)

Here we have to use the multiplication of sign rule.

- (-) = +

-(+) = -

+(-) = -

+(+) = +

So, we we multiply negative by negative, the result will be positive.

Therefore, -(-3.7) = +3.7

Hence, the answer is C) 3.7

bogdanovich [222]3 years ago
4 0
3.7

I hope this helps! Negatives cancel out negatives
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jolli1 [7]
Identity property because it doesn’t change the answer it’ll still be 4 if u multiply it by one
7 0
4 years ago
The value of y varies directly with x and the constant of variation is 4. What is the value of x when y=84?
anygoal [31]
Y varying directly with x means y equals a constant multiplying x: y=kx
in this case, k=4, so 84=4x
x=21
6 0
3 years ago
A triangle has two constant sides of length 5 feet and 7 feet. The angle between these two sides is increasing at a rate of 0.9
o-na [289]

Answer:12.74 ft^2/s

Step-by-step explanation:

Given

Two sides of triangle of sides 5 ft and 7 ft

and angle between them is increasing at a rate of 0.9 radians per second

let \thetais the angle between them thus

Area of triangle when two sides and angle between them is given

A=\frac{ab\sin C}{2}

A=\frac{5\times 7\times \sin \theta }{2}

Differentiate w.r.t time

\frac{\mathrm{d} A}{\mathrm{d} t}=\frac{35\cos theta }{2}\times \frac{\mathrm{d} \theta }{\mathrm{d} t}

at \theta =\frac{\pi }{5}

\frac{\mathrm{d} A}{\mathrm{d} t}=\frac{35\times cos(\frac{\pi }{5})}{2}\times 0.9

\frac{\mathrm{d} A}{\mathrm{d} t}=12.74 ft^2/s

4 0
4 years ago
On Monday, the water was shut off 3 times for ¼ hours, 2/3 hours, and 1-3/4 hours, respectively. What was the total number of ho
galina1969 [7]

Answer:

2-2/3 hours

Step-by-step explanation:

1/4 + 2/3 + 1-3/4 = 1/4 + 2/3 + 7/4. Use common is 12, so we get 3+8+21/12 = 32/12. Simplify equal 8/3 or 2-2/3 hours!

3 0
2 years ago
First right answer will get brainlist
KATRIN_1 [288]
2 and 1/5
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3rd option
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4 years ago
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