<span>Let +a+ = number of trumpet players
Let +b+ = number of saxophone players
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(1) +a+=+b+-+10+
(2) +b+=+3a+
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Substitute (2) into (1)
(1) +a+=+3a+-+10+
(1) +2a+=+10+
(1) +a+=+5+
and
(2) +b+=+3%2A5+
(2) +b+=+15+
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There are 5 trumpet players
and 15 saxophone players</span>
Answer:
Step-by-step explanation:
The equation of a straight line can be represented in the slope intercept form as
y = mx + c
Where
m = slope = (change in the value of y in the y axis) / (change in the value of x in the x axis)
The equation of the given line is
9x+7y=4
7y = - 9x + 4
y = -9x/7 + 4/7
Comparing with the slope intercept form, slope = - 9/7
If the line passing through the given point is perpendicular to the given line, it means its slope is the negative reciprocal of the slope of the given line.
Therefore, the slope of the line passing through (7,-4) is 7/9
To determine the intercept, we would substitute m = 7/9, x = 7 and y = -4 into y = mx + c. It becomes
- 4 = 7/9×7 + c = 49/9 + c
c = - 4 - 49/9 = -85/9
The equation becomes
y = 7x/9 - 85/9
Answer:
3.6% of the ball bearings will have diameters of 20.27 mm or more.
Step-by-step explanation:
We can calculate this proportion using the z-score.
We have a normal distribution with mean 20.00 mm and standard deviation of 0.150 mm.
The value for X is 20.27 mm.
Then, the z-score and its associated probability are:
She is reading at a rate of 44 pages per hour
Answer:
3-9=6-1=5ad 19 and you got f =519
Step-by-step explanation:
i think. when the 3 has thos things on it that means you have to do that first and you are figiring owt what f = that is y the f is ther and sins ther is no ecwajen arond the 1 and 9 i think it means ad that
