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MATH SOLVE
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a dump truck weighs 11.25 tons. a conveyor belt pours sand into the truck at a constant rate of 1/4 ton per minute. the dump truck weighs 18 tons when filled. at the same time the dump truck is being filled, an identical truck filled to capacity is being emptied at a rate of 1/8 ton per minute. how much sand is in each dump truck when the trucks are the same weight?
General
4 months ago
The areas of 10 cities are given in the table.How much greater is the range for the cities in the west than the cities in the east?Enter your answer in the box. mi²Eastern Cities \\\\\\ Western CitiesNew York City 305 mi² \\\\\ Los Angeles 503 mi²Baltimore 92 mi² \\\\\ San Francisco 47 mi²Philadelphia 142 mi² \\\\\ Seattle 84 mi²Orlando 111 mi² \\\\\ San Diego 372 mi²Boston 90 mi² \\\\\ Portland 145 mi²
General
4 months ago
Use the quadratic formula to solve the equation. If necessary, round to the nearest hundredth. –2y2 + 6y = –2–0.61, 6.61–0.3, 3.3–3.3, 0.3–11.5, 14.5
General
4 months ago
Tommy has a history test on Monday morning. He writes down the number of minutes he studies for the test each day for a week. Using his chart, calculate the average number of minutes he studied each day. If necessary, round your answer to the nearest tenth. Day Mins Monday-30 Tuesday-20 Wednesday-0 Thursday-0 Friday-0 Saturday-0 Sunday-120
General
4 months ago
What is the first step to simplify the expression: [–23 – [5 · (2 – 4)]] ÷ 32
General
4 months ago
evaluate sigma from (n-1 to 14) 3n+2
General
4 months ago
15 POINTSWhat is the equation of the following graph in vertex form?(parabolic function going down from the left through the point negative four comma zero and turning at the point negative three comma negative one and going up through the point negative two comma zero and then through the point zero comma eight and continuing up towards infinity) y = (x − 3)2 − 1 y = (x + 3)2 − 1 y = (x − 4)2 − 2 y = (x − 4)2 + 8
General
4 months ago
Anthony observes that when people are leaving class, about 50% turn left and about 50% turn right. Anthony wants to estimate the probability that fewer than 3 of the first 4 students will turn left when leaving class tomorrow. To do this, he lets H represent turning left when leaving class and T represent turning right. He then flips a coin 4 times, recording the results. He repeats this process for a total of 20 trials. HHTT THHT HTTT HTHH HHTT HTHT THTH TTHH HHHH HTTH HHHT TTHT THHH THTH HHTT HTTT HTTH HHTT HTHH HHTH Drag and drop the correct fraction to the box to estimate the probability, using this simulation. Estimated probability that fewer than 3 of the first 4 students leaving class tomorrow will turn left:
General
4 months ago
A deli is offering two specials. The roast beef special gives a profit of $2.30 per sandwich, whereas the turkey special gives a profit of $3.10 per sandwich. The roast beef special uses two slices of bread and three slices of cheese. The turkey special uses two slices of bread and four slices of cheese. The deli has 120 slices of bread and 160 slices of cheese available for the specials. The deli wants to maximize its profit selling sandwiches. Let x represent the number of roast beef specials and y represent the number of turkey specials. What are the constraints for the problem?
General
4 months ago
Atrap and Bracken are two rival insurance companies. Atrap and Bracken have premiums of $150 and $100 and deductibles of $2,500 and $3,500 respectively. The average expense of surgery is $25,000. If after 5 years, 25 of the 1,000 people registered with Bracken have gone through surgery, where does Bracken stand in terms of gains or losses?
General
4 months ago
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