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Whitepunk [10]
3 years ago
10

There are 35 boys in the sixth grade. The number of girls in the sixth grade is 42. Lonnie says that means the ratio of the numb

er of boys in the sixth grade to the number of girls in the sixth grade is 5: 7. Is Lonnie correct?
Mathematics
1 answer:
balandron [24]3 years ago
8 0
Lonnie is incorrect. this is because 7 x 7 equals 49 and not 42.
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7 0
3 years ago
write the standard form of the equation of the line described. through (-2,3), perpendicular to y=2/7x+5
Setler79 [48]
The general form of a linear equation is
y = mx + b
where m = slope and b = y-intercept
Here m = 2/7
To get to its perpendicular equation, first the slope should be negative reciprocal. So the perpendicular slope is m = -7/2
Given the point (-2,3), use the point-slope form equation, that is
y - y1 = m(x - x1)
Plug in
y - 3 = (-7/2)[x - (-2)]
y - 3 = (-7/2)x - 7
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That is the equation required.
4 0
3 years ago
R^2+7r+10/3 / 3-30/r2-5r-50
kvasek [131]
Multiply r^2+7r+10/3 by 3r-30/r^2-5r-50 
<span>=( r^2+7r+10)/3 (3r-30)/(r^2-5r-50) </span>
<span>=(r+2)(r+5)/3 3(r+10)/ (r-10)(r+5) </span>
<span>=3 (r+2)(r+5)(r+10)/3(r-10)(r+5) </span>
<span>=(r+2)(r+10)/(r-10)</span>
8 0
2 years ago
Read 2 more answers
Jack has 3 quarters, 2 dimes, and one penny. how much money does jack have in all? show your work.
Aleks [24]
75+20+1=96 cents


your welcome
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Hope that helped
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