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lisov135 [29]
3 years ago
8

Which statement is true?

Mathematics
2 answers:
Veronika [31]3 years ago
7 0
B. is true. 15·(–5) > 23·(–12).
15·(-5)=-75.
23·(-12)=-276.

-75 > -276
defon3 years ago
7 0
B is true  for this question

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Christian is placing photos onto scrapbook paper for his photo album. the scrapbook paper is 12 inches long and 12 inches wide.
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The answer would be 144 inches, found by multiplying the length of the paper by the width.

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Write 10 5/12 as an equivalent improper fraction.
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125/12 would be your equivalent improper fraction

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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
HELPPPP will mark brainliest
ArbitrLikvidat [17]

Answer:

12x-2

Step-by-step explanation:

You need to add 5x+1 and 7x-3.

5x+1+7x-3.

We need to organize this into common terms.

5x+7x+1-3

Now we simplify.

12x-2

That is the final answer!!

Hope this helped!!!! :D

6 0
3 years ago
What’s the answer. Please respond fast
8_murik_8 [283]
The answer to your problem is 108.18
7 0
3 years ago
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