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coldgirl [10]
3 years ago
9

Can you help plz I don’t get it

Mathematics
1 answer:
aleksklad [387]3 years ago
7 0
The correct answer is A) x=3

What this picture demonstrates is 3 x’s on the left side and 9 ones on the right. So it says 3x=9. If you were to divide by 3, or multiply by 1/2, you’d have x=3.

Another way to think of it is by redrawing the picture. Each ‘x’ would get three “1’s” thus x=3
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For which sample size (n) and sample proportion (p) can a normal curve be
Nonamiya [84]

Answer:

Option c.

Step-by-step explanation:

Using the normal curve to approximate a sampling distribution:

For a sample size n and a proportion n, the normal curve can be used if:

np \geq 10 and n(1-p) \geq 10

Option a:

np = 35*0.8 = 28 > 10

n(1-p) = 35*0.2 = 7 < 10

So option a cannot be used.

Option b:

np = 65*0.9 = 58.5 > 10

n(1-p) = 65*0.1 = 6.5 < 10

So option b cannot be used.

Option c:

np = 65*0.8 = 52 > 10

n(1-p) = 65*0.2 = 13 > 10

So option c can be used, and is the answer

Option d:

np = 35*0.9 = 31.5 > 10

n(1-p) = 35*0.1 = 3.5 < 10

So option d cannot be used.

The answer is given by option c.

7 0
3 years ago
32 minus twice p is 31​
Katena32 [7]
P=1 because 32-1 is 31
3 0
3 years ago
Sum of three consecutive multiples of 6 is 648. One of these multiple is​
Ber [7]

Answer:

Let two consecutive multiples of 3 be x and (x+3)

A/q,

x * (x+3) = 648

➡ x² + 3x = 648

➡ x² + 3x -648 = 0

➡ x² + 27x - 24x -648 = 0

➡ x ( x + 27 ) -24 ( x +27)

➡ ( x - 24) ( x + 27)

➡ x = 24 and x = -27

so, we take x = 24.

Required multiples of 3

➡ x = 24

➡ x +3 = 24+3 = 27.

3 0
3 years ago
Read 2 more answers
Please answer this for me i need a step by step example
nataly862011 [7]
I’m not sure. But I’m sure someone will help you. I haven’t done it in a while. Sorry about that
7 0
2 years ago
Read 2 more answers
Two angles in a triangle add up to 85 degrees what is the size of the third angle
Ilia_Sergeevich [38]
All of the angles in a triangle should add up to 180 degrees so if you know 2 out of three you just do subtract 180 by the sum of the two angles.
180-85=95
6 0
3 years ago
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