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Lostsunrise [7]
3 years ago
12

HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP PLEASE

Mathematics
2 answers:
Mars2501 [29]3 years ago
7 0

Answer:

19+19+10+10= 58 is the answer

irinina [24]3 years ago
4 0
19 + 10 + 19 + 10 = 58
If you see the lines on the other side clearly you will understand it
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the initial vertical velocity of a rocket shot straight up is 42 meters per second. How long does it take for the rocket to retu
Snowcat [4.5K]
It takes 4.3 seconds for the rocket to return to earth.

The equation is:
0=-9.8t^2+v_0t+h_0
where -9.8m/sec² is the acceleration due to gravity, v₀ is the initial velocity, and h₀ is the initial height.  We will go from the assumption that the rocket is launched from the ground, so h₀=0, and we are told that the initial velocity, v₀, is 42.  This gives us:

0=-9.8t^2+42t

We will use the quadratic formula to solve this.  The quadratic formula is:
x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}

Plugging in our information we have:
t=\frac{-42\pm \sqrt{42^2-4(-9.8)(0)}}{2(-9.8)}
\\
\\=\frac{-42\pm \sqrt{1764-0}}{-19.6}
\\
\\=\frac{-42\pm \sqrt{1764}}{-19.6}
\\
\\=\frac{-42\pm 42}{-19.6}=\frac{-42-42}{-19.6} \text{ or } \frac{-42+42}{-19.6}
\\
\\=\frac{-84}{-19.6}\text{ or }\frac{0}{-19.6}
\\
\\=4.3\text{ or }0

x=0 is when the rocket is launched; x=4.3 is when the rocket lands.
8 0
3 years ago
The graph shows the relationship between the volume of a rectangular prism and the volume of a square pyramid with an identical
True [87]

Answer: is it on chart? if count rise over run

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Please no link because I can't access it when it's sent.please am asking no link ​
erma4kov [3.2K]

Answer:

x ≈ 1051.368672

Step-by-step explanation for #3:

tan(\frac{x}{12}) =24          <em>Use tangent function because it relates to the opposite and adjacent sides of the triangle.</em>

<em />tan^{-1}(tan(\frac{x}{12}))=tan^{-1}(24)<em />

<em />\frac{x}{12} = tan^{-1}(24)<em />

<em />x = 12[tan^{-1}(24)]<em />

x ≈ 1051.368672

If you have any more questions, feel free to ask and I'll answer them in the comments section under this answer. Please consider marking my answer as Brainliest, because it really helps me out.

Thanks!

7 0
3 years ago
Mrs. McAlister wrote the equation 10 t minus 4 t + 3 t = 8 on the board and asked students to write an equivalent equation. The
tia_tia [17]
10t - 4t + 3t = 8
13t - 4t = 8 (will do addition first)
9t = 8
So, Tanisha’s equation will be equivalent
As Tanisha’s equation is :
9t = 8
4 0
2 years ago
Find the perimeter and area of the following combined figure.​
timofeeve [1]

Answer:

perimeter =136cm

and

area =560+308= 868 sq.cm

8 0
2 years ago
Read 2 more answers
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