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zzz [600]
2 years ago
7

A rocket is launched from a hill above a lake. The rocket will fall into the lake after exploding at its maximum height. The roc

ket's height above the surface of the lake is given by g(x)= -16x² + 72x + 80. How long will it take to hit the ground?
Mathematics
1 answer:
KonstantinChe [14]2 years ago
4 0

Step-by-step explanation:

g(x)= -16x² + 72x + 80

Plug 2 in to check if it's correct.

g(2)= -16(2)² + 72(2) + 80

-16(4)+128+80

-72+128+80

= 136

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Order from least to greatest
Orlov [11]
Answer: 
In order from least to greatest: 0.25, 3 ⅜, 3 <span>⅖</span>; 

Or, write as: 0.25 < 3 ⅜ < 3 ⅖ .
___________________________________
Explanation:

0.25 =  ¼ l  (less than "1"); the lowest of the three given values. 

The remaining two values have the same whole number of 3, and a fraction:
   3 <span>⅖ ;</span> and 3 ⅜.

The least common multiples among the denominators of the fraction values is 40.   ⅖ = ?/40 ; 5*? =40? 5* 8 = 40, so 2*8 = 16;
Thus, ⅖ = 16/40, and 3 ⅖ = 3 16/40.  3/8 = ?/40? 8*5 =40; so 3*5 = 15 ; thus ⅜ = 15/40; and
and 3 ⅜ = 3 15/40.
3 15/40 is less than than 3 16/40;  
as such; 3 ⅜ is less than 3 ⅖.

So, in order from least to greatest: 0.25, 3 ⅜, 3 ⅖; 
Or, write as: 0.25 < 3 ⅜ < 3 ⅖ .

7 0
3 years ago
Write the number in 2 equivalent forms as a​ fraction, decimal, or percent.0.40
KIM [24]

Answer:

2/5 or 40%

Step-by-step explanation:

.40 is 40 hundredths or 40/100

40/100 can be reduced to 20/50 and reduced again to 10/25 and one more time to 2/5

Percentages are fractions out of 100 so 40/100 would be 40%.

5 0
3 years ago
Here is an easy puzzle:
galina1969 [7]
The answer is 
date
1                  2                 3          4             5                                         31
r1                r2               r3           r4          r5               .  .  .                  r31
1gm           2gms         3<span>gms     4gms    5gms        .   .  .                 31gms

r1+r2+ .... +r31= 31(31+1) /2=496gms  (31 rings)

he only made 5 rings

31 rings----------> 496 gms
5 rings ------------> ? = 5 x496  / 31=80 gms

</span><span> the weights of those 5 rings was 80 gms</span>
4 0
4 years ago
Which of the following transformations produce congruent images? translation rotation dilation reflection
slava [35]

Answer:

Translation, rotation and reflection

Step-by-step explanation:

Congruent images remain the same.

Translation, rotation and reflection preserve congruence while dilation will not.

8 0
3 years ago
Read 2 more answers
<img src="https://tex.z-dn.net/?f=15x%5E%7B2%7D" id="TexFormula1" title="15x^{2}" alt="15x^{2}" align="absmiddle" class="latex-f
Genrish500 [490]

Answer:

not sure of what you were asking so it's simplified below.

Step-by-step explanation:

15x^2-10x-6x+4\\\\15x^2-16x+4

Note: best i could do with what was given.

8 0
3 years ago
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