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valentinak56 [21]
3 years ago
14

I NEED HELP ASAP!!! MIGHT MARK BRAINLIEST

Mathematics
2 answers:
Olin [163]3 years ago
7 0
Answer: 12+12=24
Explanation: It was -12 degrees in the morning, and it became 12 degrees in the afternoon. So, the temperature needs to go up 12 degrees first, which becomes 0, and then go up another 12 degrees to become 12. So the total temperature rise was 24.
Goryan [66]3 years ago
5 0

Answer:

the temp now is 0 degrees

-12+12=0

Step-by-step explanation:

hope i helped

brainliest pls!

-Zylynn

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Find the value of d.<br> 1/2d - 5 -1/4d = 10
Ksenya-84 [330]
D=60. multiply both sides of the equation by 4 since it’s a factor, giving you 2d-20-d=40. since there are like terms with d, collect them to get d-20=40 and move 20 to the right and change it’s sign. that will give you d=40+20, then calculate to get d=60. hope this helped! :)
6 0
3 years ago
Hurry please!
muminat

Answer:

Johnny is correct because irrational numbers never end

3 0
3 years ago
chegg evaluate the following integral using trigonometric substitution. dx/square root(x^2-81), x &gt; 9
vesna_86 [32]

Integration will be ln | ( x /9 ) + ( \sqrt{(x/9)^{2} - 1 } ) | + c  .

Given  ∫ 1 dx / ( x^{2} - 81 )

Put ,

x = 9 secθ

dx = 9 secθ tanθ dθ

and

\sqrt{x^{2}  - 9^{2} } = 9 tanθ

Substituting values in  ∫ 1 dx / ( x^{2} - 81 ) ,

∫ (9 secθ tanθ ) dθ / ( 9 tanθ )

∫ secθ dθ = ln | secθ + tanθ | + c

                = ln | ( x /9 ) + ( \sqrt{x^{2}  - 9^{2} } / 9 ) | + c

              = ln | ( x /9 ) + ( \sqrt{(x/9)^{2} - 1 } ) | + c

Hence , the integration will be ln | ( x /9 ) + ( \sqrt{(x/9)^{2} - 1 } ) | + c .

To learn more on integration follow link :

brainly.com/question/20156869

#SPJ4

6 0
2 years ago
Mina created a miniature rocket launcher, and the graph shows the height of one of her
Kazeer [188]

Answer:

Work individually or in teams of two to construct and launch paper rockets using a teacher-built PVC-pipe launcher.

Following the flight of their rocket, calculate the altitude their rocket achieved.

Based on the flight performance of their rockets, analyze their rocket designs, modify or rebuild them, launch again, and calculate the altitude achieved to determine if their changes affected the performance of the rocket.

Conclude the activity by writing a post-flight mission report.

Materials

5 0
3 years ago
Y is directly related to X, and Y is 81 when X is 27.<br> The constant of variation is ____
Tamiku [17]

Answer:x=3/9

Step-by-step explanation:

X directly proportional to Y

X=ky

Make k the subject of formula

k=x/y

K=27/81

Divided by 9

K=3/9

5 0
3 years ago
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