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Shtirlitz [24]
3 years ago
8

One winter night the temperature fell 13 degrees between midnight and 5 A.M. By 9 A.M.the temperature had doubled from what it w

as at 5 A.M. By​ noon, it had risen another 9 degrees to 29 degrees. What was the temperature at​ midnight?
Mathematics
1 answer:
vaieri [72.5K]3 years ago
8 0

Answer:

23 degrees

Step-by-step explanation:

First, subtract 9 from 29 to find the temperature at 9 A.M. The temperature at 9 A.M. was 20 degrees. The temperature from 5 A.M. doubled to get to the temperature at 9 A.M., so divide 20 by 2. The temperature at 5 A.M. was 10 degrees. The temperature from midnight to 5 A.M. fell 13 degrees, so add 13 to get the temperature at midnight. 13+10=23. It was 23 degrees at midnight.

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Pani-rosa [81]
835/ 10 is 83.5
So his average rate of change is 83.5 miles per hour
5 0
3 years ago
Work out the value 4^2 x2^4
elixir [45]

Answer

The answer to this equation would be 64. '^' just means multiplied by. It has the same mathematical definition as the multiplication sign.

Step-by-step explanation:

USING PEMDAS (NO PARENTHESES)

4 x 2 x 2 x 4

8 x 2 x 4

16 x 4

64

USING PEMDAS (WITH PARENTHESES)

(4 x 2) x (2 x 4)

(8) x (2 x 4)

(8) x (8)

64

3 0
3 years ago
Read 2 more answers
Solve this question please
Iteru [2.4K]

The value of y in y = 5x if the value of x doubles itself is y also doubles itself; option A

<h3>How to solve equation?</h3>

y = 5x

if x = 2

y = 5(2)

y = 10

if the value of x doubles, for instance, if x = 4

y = 5(4)

y = 20

y = 5/x

if x = 0.5

y = 5/0.5

y = 10

if the value of x triples, for instance, if x = 0.125

y = 5/x

= 5/0.125

y = 40

The value of y in y = 5/x if the value of x triples itself is y also triples itself; option B

Learn more about equation:

brainly.com/question/13763238

#SPJ1

4 0
2 years ago
Would appreciate it if anyone could answer
stepladder [879]

Answer:

x=7

Step-by-step explanation:

If one of the angles is a right angle, then it equals 90 degrees.  Since the other angle is 33 degrees and all triangles equal 180 degrees, then that means that the remaining angle must equal 57.  Since the angle that equals 57 degrees is represented by the expression 6x+15, then 57=6x+15 and now all that's left is to simplify:

57=6x+15\\57-15=6x+15-15\\42=6x\\\frac{42=6x}{6}\\7=x

Hope this helps :)

7 0
2 years ago
What 3 relationships are truth in the construction below?? (Only if you know please though! I numbered them for you as well!)
Ahat [919]

Answer:

The 3 truth relationships are:

Line CD is the perpendicular bisector of AB ⇒ (1)

Line AB is perpendicular to the line CD ⇒ (3)

Line segment AE is congruent to line segment BE ⇒ (4)

Step-by-step explanation:

<em>When two circles </em><em>pass through the centers of each other</em><em>, then the line </em><em>joining their intersection points</em><em> is the </em><em>axis of symmetry (perpendicular bisector) </em><em>of the </em><em>segment joining their centers</em>

In the given figure

∵ Circle A passes through the center of circle B

∵ Circle B passes through the center of circle A

∴ AB is the line center

∵ Circles A and B intersected at points C and D

∴ CD is the line joining their intersection points

→ By using the rule above

∴ CD is the perpendicular bisector of AB

∴ Line CD is the perpendicular bisector of AB ⇒ (1)

∵ CD ⊥ AB

→ That means AB is perpendicular to CD

∴ Line segment AB is perpendicular to line CD ⇒ (3)

∵ CD is the perpendicular bisector of AB

∴ E is the mid-point of AB

→ That means E divides AB into two equal parts AE and BE

∴ AE = BE

∴ Line segment AE is congruent to line segment BE ⇒ (4)

5 0
3 years ago
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