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Rasek [7]
3 years ago
10

In the first session 40 student attended.Of these 40 students 60% were girls. How many girls attended the first session of swimm

ing lessons?
Mathematics
2 answers:
Romashka-Z-Leto [24]3 years ago
8 0
24 girls

60% is 0.6
40 x 0.6 = 24
Nataliya [291]3 years ago
5 0
10% of 40 is 4.

4 x 6 = 24

There were 24 girls.
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знайдіть площу трикутника дві сторони якого дорівнюють 4 см і 6 см а кут між ними дорівнює 60 дам ‼️40 балов‼️
motikmotik
What are you saying lol. Most of us are English
5 0
3 years ago
HELP ME NOW PLEASE NOW ADGAFDKD;LHJ!!!!!!<br><br><br> PLEASE AND THANK YOU :)))))
Eddi Din [679]

I got D.

There's a few ways to solve it; I prefer using tables, but there are functions on a TI-84 that'll do it for you too. The logic here is, you have a standard normal distribution which means right away, the mean is 0 and the standard deviation is 1. This means you can use a Z table that helps you calculate the area beneath a normal curve for a range of values. Here, your two Z scores are -1.21 and .84. You might notice that this table doesn't account for negative values, but the cool thing about a normal distribution is that we can assume symmetry, so you can just look for 1.21 and call it good. The actual calculation here is:

1 - Z-score of 1.21 - Z-score .84 ... use the table or calculator

1 - .1131 - .2005 = .6864

Because this table calculates areas to the RIGHT of the mean, you have to play around with it a little to get the bit in the middle that your graph asks for. You subtract from 1 to make sure you're getting the area in the middle and not the area of the tails in this problem.

7 0
3 years ago
ILL GIVE BRAINLIEST<br> 1 x/3 - 3/4= 5/12<br> solve for x
mel-nik [20]
X/3 - 3/4 = 5/2
x/3 = 3.25
x= 9.75 Or 9 3/4
4 0
1 year ago
Graph y = -½ x -3 mathematics
Dominik [7]
We can’t attach imagines on here
6 0
3 years ago
Daniel buys a block of clay for an art project. The block is shaped like a cube with edges lengths of 10 inches. Daniel decides
Andre45 [30]

Answer:

=14.92...

14 the maximum number of spheres that Daniel can make from the chunk of clay.

.

Step-by-step explanation:

10^3=1000 in^3

1000/2=500 vol of one congruent chunk.

4/3 * pi * r^3 = vol of a sphere

500/(4/3 * pi * 2^3)

=14.92...

5 0
2 years ago
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