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zubka84 [21]
3 years ago
10

Use the number line to determine the unknown addend. 2 + ____ = 11 -3 + ____ = -11

Mathematics
1 answer:
den301095 [7]3 years ago
7 0

Answer:

For the First one, 2 + 9 = 11. And 11 - 3 + (-19) = -11

Step-by-step explanation:

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There is a population of 5,000 bacteria in a colony. If the number of bacteria doubles every 37 minutes, what will the populatio
Troyanec [42]

Answer:

If there are 5000 bacteria in a colony right now, there will be  5000x2, or 10000 bacteria in the colony in 37 minutes.

If there are 10000 bacteria in the colony in 37 minutes, there will be 20000 bacteria in the colony in 74 minutes, as the bacteria doubles every 34 minutes.

Let me know if this helps!

8 0
2 years ago
Read 2 more answers
A stone is launched into the air from a height of 240 feet. The height, h, of the stone, in feet, t seconds after launch is give
rosijanka [135]

A projectile is an object <u>launched</u> into space, and moving under the <em>influence</em> of <u>gravity</u> and <u>momentum</u>. The <em>stone</em> here is an example. Thus, the <em>time</em> taken for the stone to reach the ground is 10 seconds.

On <em>launching</em> of the stone into <u>space</u>, it behaves as a <u>projectile</u>. Thus moving under the <em>influence</em> of gravity and its momentum. Its <u>momentum</u> is the <em>product</em> of its <u>mass </u>and <u>velocity</u>.

The height h, is given as:

h = 16t^{2} + 32t + 240

Differentiating the expression with respect to t, we have;

32t + 32 = 0

t = -1 seconds

Substitute the value of time, t, in the equation for the height;

h = 16 - 32 + 240

  = 224

h = 224 m

Total height, S = 240 + 224

                         = 464

S = 464 m

The total height covered by the stone is 464 m.

From the second equation of <em>free fall</em>,

S = Ut + \frac{1}{2}gt^{2}

S = \frac{1}{2}gt^{2}

464 = \frac{1}{2}*9.8*t^{2}

t^{2} = \frac{928}{9.8}

  = 94.694

t = \sqrt{94.694}

 = 9.7311

t ≅ 10 seconds

The <em>time taken</em> for the stone to hit the ground is 10 seconds.

Thus option A is the required answer.

Visit: brainly.com/question/13834669

7 0
2 years ago
21. SAT Scores Sample SAT scores for eight males and eight females are listed. 923 1017 1214 1042 1226 965 841 1053 1056 (1393 1
balu736 [363]

Answer:

ddfdfd

Step-by-step explanation:

7 0
3 years ago
How to solve 64mi/h=____ft/s
MakcuM [25]
To convert miles to feet you multiply by 5280
To convert hours to seconds you divide by 3600

so you multiply 64  by 5280/3600   which comes to  93.87 ft/s Answer


7 0
3 years ago
Pls help solve a and b
Varvara68 [4.7K]
A is 9 for the proportion part but I can’t see the rest of b so I can’t answer that for you
6 0
3 years ago
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