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Fofino [41]
3 years ago
12

How is 225 divisible by nine

Mathematics
2 answers:
Svetradugi [14.3K]3 years ago
8 0
<span>A number is divisible by 9  if the sum of the digits is divisible by 9.

</span><span>225 is divisible by 9 since the sum of the digits is 9 , (2+2+5=19), and 9 is divisible by 9.</span>
Ivanshal [37]3 years ago
5 0
A number is divisible by 9 if and only if the sum of its number is a multiple of nine.

2+2+5=9 hence 255 is divisible by 9.
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Slope intercept form is y=mx+b. In this case, I believe it's y= -5/6x -5/6.
7 0
3 years ago
Tara runs an amusement park ride and needs to count the people who get on the ride. At the beginning of her shift, 132 people ha
DanielleElmas [232]
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6 0
3 years ago
Read 2 more answers
Question
balandron [24]

Answer:

The approximate percentage of SAT scores that are less than 865 is 16%.

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

Approximately 68% of the measures are within 1 standard deviation of the mean.

Approximately 95% of the measures are within 2 standard deviations of the mean.

Approximately 99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

Mean of 1060, standard deviation of 195.

Empirical Rule to estimate the approximate percentage of SAT scores that are less than 865.

865 = 1060 - 195

So 865 is one standard deviation below the mean.

Approximately 68% of the measures are within 1 standard deviation of the mean, so approximately 100 - 68 = 32% are more than 1 standard deviation from the mean. The normal distribution is symmetric, which means that approximately 32/2 = 16% are more than 1 standard deviation below the mean and approximately 16% are more than 1 standard deviation above the mean. So

The approximate percentage of SAT scores that are less than 865 is 16%.

8 0
3 years ago
P(A) = 0.5 P(B) = 0.35 P( A or B) = ?
neonofarm [45]

Answer:

0.5 ≥ x ≥ 0.35

Step-by-step explanation:

3 0
3 years ago
What is the measure of arc CD?
CaHeK987 [17]

Option C:

The measure of arc CD is 40°.

Solution:

Given data:

m∠X = 11° and m(arc AB) = 18°

To find the measure of arc CD:

We know that,

<em>Angle formed by two intersecting secants outside the circle is equal to half of the difference between the intercepted arcs.</em>

$m \angle X =\frac{1}{2}({arc  \ CD}-{arc}  \ AB)

$ 11^\circ =\frac{1}{2}({arc}  \ CD-{18^\circ})

Multiply by 2 on both sides.

22° = arc CD - 18°

Add 18° from both sides.

40° = arc CD

Switch the sides.

arc CD = 40°

Hence the measure of arc CD is 40°.

Option B is the correct answer.

7 0
3 years ago
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