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Goshia [24]
2 years ago
7

In a group of 80 children there are 3 times as many boys as girls how many girls are there

Mathematics
1 answer:
insens350 [35]2 years ago
7 0
80=x+3x
80=4x
20=x

There are 20 girls.
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Alex73 [517]
It's B the second one
6 0
3 years ago
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100(x - 3)=1000<br><br>can you help​
alekssr [168]

Answer:

x= 13

Step-by-step explanation:

6 0
3 years ago
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Henry is taking a medicine for a common cold. The table below shows the amount of medicine f(t), in mg, that was present in Henr
Elden [556K]
Geometric sequence general form: a * r^n
For Greg, we are given the elimination of the medicine as a geometric nth term equation:
200 * (0.88)^t
The amount of medicine starts at 200 mg and every hour, decreases by 12%;
To compare the decrease in medicine in the body between the two, it is useful to get them in a common form;
So, using the data provided for Henry, we will also attempt to find a geometric nth term equation that will work if we can:
As a geometric sequence, the first term would be a and the second term would be ar where r = multiplier;
If we divide the second term by the first term, we will therefore get r, which is 0.94 for Henry;
We can check that the data for Henry can be represented as a geometric sequence by using the multiplier (r) to see if we can generate the third value of the data;
We do this like so:
282 * (0.94)^2 = 249.18 (correct to 2 d.p)
We can tell that the data for Henry is also a geometric sequence.
So now, we just look at the multiplier for Henry and we find that every hour, the medicine decreases by 6%, half of the rate of decrease for Greg.

The answer is therefore that <span>Henry's body eliminated the antibiotic at half of the rate at which Greg's body eliminated the antibiotic.</span>
3 0
3 years ago
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Simplify 200xyz3 .
sdas [7]

Simplify the Integer part of the SQRT

Step-by-step explanation:

Factor 200 into its prime factors

           200 = 23 • 52 

5 0
3 years ago
Composite numbers are
oee [108]
Composite numbers are numbers that are not prime.
6 0
2 years ago
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