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Vlada [557]
3 years ago
8

55% of what number is 1100? Which of the following proportions could be used to solve this problem?

Mathematics
1 answer:
ivolga24 [154]3 years ago
6 0
Wouldn't the answer be B? 
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Suppose that the concentration of a bacteria sample is 60 comma 000 bacteria per milliliter. If the concentration triples in 4 ​
Elodia [21]

Answer:

1.932 days (or approximatelly 1 day, 22 hours and 22 minutes)

Step-by-step explanation:

The inicial concentration is 60,000, and this concentration triples every 4 days, so we can write the equation:

P = Po * r^t

where P is the final concentration after t periods of 4 days, Po is the inicial concentration and r is the ratio that the concentration increases (r = 3)

Then, we have that:

102000 = 60000 * 3^t

3^t = 102/60 = 1.7

log(3^t) = log(1.7)

t*log(3) = log(1.7)

t = log(1.7)/log(3) = 0.483

so the number of days that will take is 4*0.483 = 1.932 days (or approximatelly 1 day, 22 hours and 22 minutes)

3 0
3 years ago
Not sure how to do this! I’m supposed to find the area of each shape, but the slits in the shapes are confusing me and I’m not t
scoray [572]

sorry i don't know answe're of this question

4 0
3 years ago
How is copying line segment similar to copying an angle?​
makkiz [27]

Answer:

In terms of construction, copying a line segment and an angle requires a fixed compass width as a basic tool

Step-by-step explanation:

The basic similarity is in both constructions, or copies is that we are going to use the same compass width in each case as the basic tool to copy a line segment or an angle.

hope this helpes

be sure to give brainliest

7 0
3 years ago
In △ABC , point D is between points A and B, and point E is between points B and C. Point Y is the incenter of the triangle, YD¯
n200080 [17]

Answer:

Answer: Using the proportions between the segments, the area of the triangles are:

1. Area of triangle ADC is 25 in^2.

2. Area of triangle BDC is 15 in^2.

3. Area of triangle CDE is 12 in^2.

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
⛅️ + ⛅️+ ⛅️= 30<br> ⛅️ + ❄️+ ❄️= 20<br> ❄️ + + = 13<br> ⛅️+ ❄️ x = ??
Alexxx [7]
⛅️ = 10
❄️= 5
Unfortunately that’s all I can offer because I don’t understand what the + + and ❄️ x means
4 0
4 years ago
Read 2 more answers
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