System Applications
A chemistry teacher needs to make a 42% sulphuric acid solution. The acid solutions available are 4 liters of 30% sulphuric acid and 50% sulphuric acid, by volume. How many liters of the 50%...
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12/16/20
Write the equation of the line perpendicular to y = -3x- 9 and passing through (6,8).
y = 3x + 5y = -1/3x - 7y = 3x + 4(wrong)y = -1/3x + 10
equations of circles
write the equation in standard form for the circle passing through (1,0) centered at the origin
equations of circles
write the equation in standard form for the circle passing through (1,0) centered at the origin
12/16/20
Help, help me, I'm losing my sanity.
Two mechanics worked on a car. The first mechanic worked for 10 hours, and the second mechanic worked for 5 hours. Together they charged a total of $1,550. What was the rate charged per hour by...
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12/16/20
write an Line equation
Write an equation for line L in point-slope form and slope-intercept form.L is parallel to y=3x LINE L is 2,-4
12/15/20
Math Surface Areas
A bale of hay in the shape of a rectangular prism has a length of 4 feet, a width of 2 feet, and a height of 2 feet. A cylindrical bale of hay has a diameter of 5 feet and a height of 6 feet. How...
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12/15/20
whats the awsner please
What is the value of p if the expression 4(n+7) is equivalent to (n+p)4?
12/15/20
HELP THIS IS DUE TODAY!!!!!!
Chocolate Bliss sells their box of chocolate candy for $2.00 per candy plus a $12 packaging tee. Expressions in Sweets sells their box of chocolate candy for $3.00 per candy plus a $10 packaging...
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12/15/20
In a family with 5 children, excluding multiple births, what is the probability of having 5 girls? Assume that a girl is as likely as a boy at each birth.
In a family with 5 children, excluding multiple births, what is the probability of having 5 girls? Assume that a girl is as likely as a boy at each birth.Find the number of elements in event E,...
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12/15/20
Find\:Pr\left[A^c\cap B\right].
Let A and B represent independent events in a sample space S with Pr[A] = .8 and Pr[B] = .5 .
12/15/20
Lin runs 5 laps around a track in 15 minutes.
1- How many minutes per lap is that?2- How many laps per minute is that?3- If Lin runs 24 laps, how long does it take her?
12/15/20
Mixture word problems
Brand X sells 32 oz. bags of mixed nuts that contain 52% peanuts. To make their product they add peanuts to Brand A's mixed nuts which contain 20% peanuts. How much of each do they combine?
12/15/20
Finding my rate per hour
I can run 2 miles every 1/3 of a minute. Find my unit rate per hour
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