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Setler [38]
3 years ago
9

An arrangement of marbles has 12 marbles in the first row and 10 rows in all. In each successive row one marble is added.

Mathematics
1 answer:
noname [10]3 years ago
6 0
Firstly, you divide by -2 then |x|  which equals 3 and the solutions x+3
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What number are 1.3 units from 0.4 on a number line
spayn [35]
0.5  ,0.6  ,0.7  ,0.8  ,0.9  ,1,1  .1  ,1.2  ,1.3

3 0
3 years ago
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Solve for x2:<br><br> y2 − y1 = m(x2 − x1)<br><br><br> this is literal equations btw
blondinia [14]

Answer:

x2 = y2/m - y1/m + x1

Step-by-step explanation:

Expand

y2 - y1 = mx2 - mx1

Rearrange

y2 - y1 + mx1 = mx2

Divide both sides by m to make x2 on its own

y2/m - y1/m + x1 (m's cancel out) = x2

Hence:

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7 0
3 years ago
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The positive square root of 38 is between?
Oksanka [162]
It's between 6 and 7.
4 0
3 years ago
Someone please explain (:
GaryK [48]

Answer:

a.) 1.38 seconds

b.) 17.59ft

Step-by-step explanation:

h(t) = -16t^2 + 22.08t + 6

if we were to graph this, the vertex of the function would be the point, which if we substituted into the function would give us the maximum height.

to find the vertex, since we are dealing with something called "quadratic form" ax^2+bx+c, we can use a formula to find the vertex

-b/2a

b=22.08

a=-16

-22.08/-16, we get 1.38 when the minuses cancel out. since our x is time, it will be 1.38 seconds

now since the vertex is 1.38, we can substitute 1.38 into the function to find the maximum height.

h(1.38)= -16(1.38)^2 + 22.08t + 6 -----> is maximum height.

approximately = 17.59ft -------> calculator used, and rounded to 2 significant figures.

for c the time can be equal to (69+sqrt(8511))/100, as the negative version would be incompatible since we are talking about time. or if you wanted a rounded decimal, approx 1.62 seconds.

7 0
3 years ago
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HELP PLEASE. what is 2878 to the third power
Neporo4naja [7]
Multiply 2878 three times.

23,838,140,152

Hope this helps :)

8 0
3 years ago
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