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zheka24 [161]
3 years ago
14

At 9:00 pm, the temperature was 45 degrees. By 3:00 am, the temperature dropped to -5 degrees. By how much did the temperature c

hange?
Mathematics
2 answers:
muminat3 years ago
8 0
(40-45):45 = .... X 100 = ... %
maw [93]3 years ago
6 0

50 degrees is how much the temperature changed

45 - -5 equals 50

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Find the missing length for the right triangle described below. B = 21 ft, c=27 ft. Find side a. Round to the nearest whole numb
maksim [4K]

Answer:

16.97 ft

Step-by-step explanation:

According to the scenario, computation of the given data are as follows,

Side B = 21 ft

Side c = 27 ft

As we know, formula for right triangle is as follows,

a^{2} + b^{2} = c^{2}

a^{2} = c^{2} - b^{2}

So, by putting the value in the formula, we get,

a^{2} = 27^{2} - 21^{2}

a^{2} = 729 - 441

a^{2} = 288

a = 16.97 ft

Hence, the length of the side  for the right triangle is 16.97ft.

6 0
3 years ago
1/4 divides by 5/13=?
katrin2010 [14]
1/4 dividend by 5/13 is the same as
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8 0
3 years ago
What value for C will make the expression a perfect square trinomial x2-7x+c
Tom [10]

Answer:

The value of c is 12.25

Step-by-step explanation:

we know that

A perfect square trinomial is of the form

(x-a)^{2}=x^{2}-2ax+a^{2}

In this problem we have

x^{2}-7x+c

so

equate the equations

x^{2}-7x+c=x^{2}-2ax+a^{2}

we have

the following equations

-7x=-2ax -----> equation A

and

c=a^{2} -----> equation B

<u>Solve the equation A</u>

-7x=-2ax

7=2a

a=3.5

<u>Solve the equation B</u>

c=a^{2}

c=3.5^{2}=12.25

therefore

(x-3.5)^{2}=x^{2}-7x+12.25

The value of c is 12.25

7 0
3 years ago
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P = a + b +c for b what the answer math ​
Elena L [17]

Answer:

p - a - c = b

Step-by-step explanation:

p = a + b + c

subtract a and b from both sides to isolate c

p - a - c = a - a + b

+ c - c

3 0
3 years ago
Please help me solve 4 inequalities and show work. Will get brainiest!!
FrozenT [24]
1. y<span> ≤ 4x/3+5
2. y</span><span>< 6x/4+3</span>
5 0
3 years ago
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