The science club charges $4.50 per car at their car wash. Write and solve an inequality to find how many cars they have to wash to earn at least $300. Question solved general 10 months ago 2697

Big Dig Diamond Company pulverizes 156 tons of rock for every 2 ounces of diamonds it finds. How many tons of rock must it grind up in order to locate 20 ounces of diamonds? Question solved general 10 months ago 9721

Grapes cost $7.55 per pound. Evan wants to buy 4.8 pounds of grapes, and he estimates that he will need $32 to buy the 4.8 pounds of grapes. Which statement about Evan’s estimate is true? Question solved general 10 months ago 9364

Allison is 5 ft tall. One afternoon her shadow measured 2.5 ft. At the same time, the shadow of her favorite tree was 14.5 ft. What is the height of the tree? Question solved general 10 months ago 2515

What is the equation of the line x–3y=18 in slope-intercept form? Drag and drop the appropriate number, symbol, or variable to each box. xy–18–9–3–13136918+–= Question solved general 10 months ago 3963

The equation of a circle whose center is at (1,2) and radius is 5 is Question solved general 10 months ago 2549

For two functions, m(x) and p(x), a statement is made that m(x) = p(x) at x = 7. What is definitely true about x = 7? Both m(x) and p(x) cross the x-axis at 7. Both m(x) and p(x) cross the y-axis at 7. Both m(x) and p(x) have the same output value at x = 7. Both m(x) and p(x) have a maximum or minimum value at x = 7. Question solved general 10 months ago 3321

A weather plane took to the skies to measure the speed of the jet stream. The plane flew 1920 km with the jet stream as a tail wind. Then, it returned to its original location. The eastbound flight took 2 hours, and the westbound flight took 3.2 hours. Which system of equations can be used to find the speed of the jet stream and the speed of the plane? What was the speed of the jet stream? (p = plane, w = wind) Question solved general 10 months ago 7873

What is the solution of the system?{−3x+9y=364x+12y=24Enter your answer in the boxes. Question solved general 10 months ago 6229

A high school purchases a printing machine that can put lettering on clothing for $6000. The school plans to print T-shirts with the school logo and sell them. Each T-shirt costs the school $4 and will sell for $12. How many T-shirts must the school sell before breaking even Question solved general 10 months ago 3166

A toy manufacturer inspects boxes of toys before shipment. each box contains 19 toys. the inspection procedure consists of randomly selecting three toys from the box. if one or more of the toys are defective, the box is not shipped. suppose that a given box has two defective toys. what is the probability that it will be shipped? Question solved general 10 months ago 6349

If f(x) = 11x/(2 + x 2), find f '(3) and use it to find an equation of the tangent line to the curve y = 11x/(2 + x 2) at the point (3, 3). Question solved general 10 months ago 4527

A bacteria population is 6000 at time t = 0 and its rate of growth is 1000 Â· 9t bacteria per hour after t hours. what is the population after one hour? (round your answer to the nearest whole number.) Question solved general 10 months ago 2556

Apple weights in an orchard are normally distributed. from a sample farmer fred determines the mean weight of a box of apples to be 270 oz. with a standard deviation of 10 oz. he wonders what percent of the apple boxes he has grouped for sale will have a weight less than 255 oz. carl calculates the z-score corresponding to the weight 255 oz. = - using the table (column .00), carl sees the area associated with this z-score is 0. carl rounds this value to the nearest hundredth or 0. now, carl decides to find the percent associated with boxes less than 255 oz. so he rounds to hundredths and subtracts 0.50 - 0. = %. Question solved general 10 months ago 8954

A circle has diameter 11cmA square has side length 7cmUse Pythagoras' Theorem to show that the square will fit inside the circle without touching the edge of the circle. Question solved general 10 months ago 6745

Choose the linear inequality that describes the graph. The gray area represents the shaded region. 4x + y < 4 4x + y > 4 4x – y ≥ 4 4x + y ≥ 4 Question solved general 10 months ago 2549

Write and solve an equation to find the value of the variable 104, 137, 154, 131, x; meaan=130 Question solved general 10 months ago 3246

Act scores for 1,171,460 members of the 2004 high school graduating class who took the test closely followed the normal distribution with mean 20.9 and standard deviation 4.8. Choose two students independently and at random from this group. A) what is the expected difference in their scores b) what is the standard deviation in their scores c) find the probability that the difference in the two students scores is greater than 6. Thank you so much for your help!! Question solved general 10 months ago 2589

Which function equation is represented by the graph? A)f(x)=40(3.25)^xB) f(x)=40(2.25)^xC) f(x)=40(1.5)^xD) f(x)=40(2.5)^xPLEASEE HELP ): Question solved general 10 months ago 4663

The heights of adult women are approximately normally distributed about a mean of 65 inches with a standard deviation of 2 inches. if rachael is at the 99th percentile in height for adult women, then her height, in inches, is closest to: Question solved general 10 months ago 6124