09/01/16

Help me asap!
10cm3 of a normal specimen of human blood contains 1.2g of hemoglobin. A new piece of equipment, requiring significant effort to calibrate, was installed in the lab. The first 5 samples of 25cm3... more
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09/01/16

You are baking a casserole. The recipe calls for 2/3 of a cup of beans to make 7 servings .how many cups of beans would you need to make 49 servings?
This is a difficult word problem that I have to explain to my seventh grader
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09/01/16

How much water must be evaporated from 290 mL of a 15% salt solution to produce a 25% salt solution?
How much water must be evaporated from 290 mL of a 15% salt solution to produce a 25% salt solution?
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09/01/16

Linear Equation
x + 4 = 4(3x - 2)
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09/01/16

John wants to fence a rectangular garden, which is 30 feet. What would be the dimensions of the fence which would maximize the area?
 It's for math  
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09/01/16

how many sundaes? algebra question
Im having issues figuring out where to begin with this problem. All Ive done is convert the ice cream amounts to scoops. Thanks for your help. An ice cream shop is having a special "Ice Cream... more
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08/31/16

Diffrence of a number times 8 and 6 equals 3
I dont know how to arrange the expression the "diffrence" throws me off . 
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08/31/16

Can someone explain it
Fahrenheit temperature, F, can be found from a Celsius temperature, C, using the formula F = 1.8C + 32. Write an equation to find the temperature at which the Fahrenheit and Celsius readings are... more
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08/31/16

What is the control variable here? Can anyone help me understand this problem?
A team of researchers observed that the acorn density of the oak forests in New York fluctuates from year to year and that mice populations in the forest were increased when the acorn density was... more
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08/31/16

Two young college graduates opened a chain of print shops.
Two young college graduates opened a chain of print shops. The chain expanded rapidly during the early 1990s and many new stores were opened. The number of print shops in operation during any year... more
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08/31/16

How to find K in Q(t) = 15(1 - e^-kt)
A 50-gallon barrel is filled completely with pure water. Salt water with a concentration of 0.3 pounds/gallon is then pumped into the barrel, and the resulting mixture overflows at the same rate.... more
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08/31/16

One angle of a triangle is 4 times the measure of the 2nd angle.3rd angle measures 5 degrees more than twice the second. Find the measures of the angles.
Find the measures of the angles. 
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08/31/16

If a number is reduced by 80%, what is the ratio between the "before" and "after" values of the numbers?
 HELP
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08/31/16

A circle with center C(4,-2) contains the point D(8,1). What is the equation of the line perpendicular to the radius of the circle passing through point C
It has to be an equation that the line is perpendicular
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08/31/16

T is the midpoint of RS and RS = 29.7, what is the measure of TS?
 T is the midpoint of RS and RS = 29.7, what is the measure of TS?
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08/31/16

The sum of -7 times a number and 8 times the sum of the number and 1 is the same as the number minus 7
Help 
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08/31/16

3% interest and $3,500 more than that amount at 6%. Her total yearly interest was $570. How much did she invest at each rate?
Desa invested a certain amount of money at 3% interest and $3,500 more than that amount at 6%. Her total yearly interest was $570. How much did she invest at each rate?
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08/31/16

solve each system by sunbstitution
y=-3x-8 5x+5y=0
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08/31/16

Work and rate
adults can do a job twice as fast as children. If X adults can complete a job in d days, how many children can do the same job in d+2 days? Answer in terms of d and X  
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08/31/16

one offer for 50 snow plows quoted as 123962.50 which includes a sales tax of 5.5%. what is the cost of a single snowplow before taxes
one offer for 50 snow plows quoted as 123962.50 which includes a sales tax of 5.5%. what is the cost of a single snowplow before taxes
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08/31/16

in a absolute monarch how did the kings get their power
looking for help on a project
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08/31/16

word problem
. P can complete a task in ydays while Q takes y+12 days to do the same task. (a). What fraction of the task can each of them complete in a day? (b). If both of them work together, they can... more
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08/31/16

Two boxes are both shaped like cubes. Each edge of the smaller box is 1/2 the length of the corresponding edge of the larger box. The larger box will hold how
here is the whole question Two boxes are both shaped like cubes. Each edge of the smaller box is 1/2 the length of the corresponding edge of the larger box. The larger box will hold how many times... more
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08/30/16

if the sum of a number and nine is doubled the result is three less than the number find the number
I didn't really learn this and I forgot the concept and I need help
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08/30/16

I have no clue where to start on this problem for my college math
You read online that a 15ft by 20ft brick patio would cost about $2,275 to have it professionally installed. Estimate the cost of having a 18 by 22 ft brick patio installed
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