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victus00 [196]
4 years ago
13

In a lab, a substance was cooled by 36°C over a period of 9 hours at a constant rate. What was the change in temperature each ho

ur?
Mathematics
2 answers:
Rudiy274 years ago
8 0

Answer: Haha who else got these from ALEKS

Step-by-step explanation:

copy-paste, fill in the the numbers because ALEKS doesn't copy them, and wait for answers. This was NOT very helpful LOL.

zhannawk [14.2K]4 years ago
6 0

Answer:

Step-by-step explanation:

\frac{36 degrees}{9 hours}

\frac{4 degrees}{1 hour}

4 degrees/hour

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The length of one base of a trapezoid is 19 less than five times the length of the other base. If the trapezoid has a height of
RoseWind [281]

The length of longer base is 41 feet

<em><u>Solution:</u></em>

<em><u>The area of trapezoid is given as:</u></em>

A = \frac{a+b}{2} \times h

Where , "a" and "b" is the length of base and "h" is the height

The length of one base of a trapezoid is 19 less than five times the length of the other base

a = 19 less than fives times b

a = 5b - 19

Height of 18 feet and an area of 477 ft squared

h = 18 feet

area = 477 square feet

<em><u>Substitute the values in above formula</u></em>

477=\frac{5 b-19+b}{2} \times 18\\\\477=(6b-19) \times 9\\\\477 = 54b-171\\\\54b = 648\\\\b=12

Therefore,

a = 5b - 19 = 5(12) - 19 = 41

Thus length of longer base is 41 feet

5 0
3 years ago
BRAINLIEST AND 10 POINTS
11Alexandr11 [23.1K]

Answer:

use the link but its answer D.

Step-by-step explanation:

4 0
3 years ago
I need help pleaseee!!!
ZanzabumX [31]

Answer: x = 57

Step-by-step explanation:

Since CD = AC, triangle ACD is isosceles, therefore

ADC = DAC

ADC + DAC + 112 = 180

ADC + DAC = 180 -112 = 68

ADC + DAC = 68/2 = 34

DEB = 180 - 34 - 23 = 123 (sum of interior angles of a triangle = 180)

Therefore, x = 180 - 123 = 57  (DEB and x are supplementary angles)

6 0
1 year ago
How to work out 1/2 of 53
melisa1 [442]

Answer:

26.5

Step-by-step explanation:

7 0
2 years ago
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Is -3x+4y=8 parallel or perpendicular to -4x+3y=-6
meriva

Step-by-step explanation:

4y = 3x +8

y= 3/4x +2

3y = 4x -6

y = 4/3x -2

neither, perpendicular is negative reciprocal, and parallel m is the same. 3/4 =\ 4/3 and they are not negative reciprocals.

3 0
3 years ago
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