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MATH SOLVE
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6. Suppose a and b are integers and a^2 - 5b is even. Prove that b^2 - 5a is even.
General
4 months ago
The plant-breeding department at a major university developed a new hybrid boysenberry plant called Stumptown Berry. Based on research data, the claim is made that from the time shoots are planted 90 days on average are required to obtain the first berry. A corporation that is interested in marketing the product tests 60 shoots by planting them and recording the number of days before each plant produces its first berry. The sample mean is 92.3 days. The corporation wants to know if the mean number of days is different from the 90 days claimed. What are the correct hypotheses?
General
4 months ago
Bess and Gina earn $45 per week for delivering flowers. Bess worked for x weeks and earned an additional total bonus of $20. Gina worked for y weeks. Which expression shows the total money, in dollars, that Bess and Gina earned for delivering flowers?
General
4 months ago
how to solve inequalities
General
4 months ago
Consider the cubic function y = f(x) = -4x^3 – 6x^2 + 3x + 7.Use the Rational Zeroes Theorem to list the possible rational zeroes of f(x). ____________
General
4 months ago
Suppose a cold beer at 40°F is placed into a warm room at 70°F. Suppose 10 minutes later, the temperature of the beer is 48°F. Use Newton's law of cooling to find the temperature 25 minutes after the beer was placed into the room.
General
4 months ago
One survey showed that among 785 randomly selected subjects who completed four years of college, 18.3% smoke and a 98% confidence interval for the true percentage of smokers among all people who completed four years of college is 15.1% to 21.6%. Based on the result, the smoking rate for those with four years of college appears to be substantially different than the 27% rate for the general population.a. Trueb. False
General
4 months ago
HW-02 Problem No.2.1 / 10 pas 5x1 - x2 = 1 ( 3x2 - 2x1 = -3 Solve the system of linear equations by modifying it to REF and to RREF using elementary equivalent operations. Show REF and RREF of the system. Matrices may not be used. Show all your work, do not skip steps. Displaying only the final answer is not enough to get credit. Solution (Show all intermediate steps, formulas, calculations, explanations and comments below this line. Don't write above this line)
General
4 months ago
HELP ASAP I WILL GIVE BRAINLIEST, WORTH 20 POINTSWhich of the following is a solution of the inequality 7x+8>20.1.) 12/72.) 2.53.) -3Answer choices:1.) 1, 2, and 32.) 1 and 23.) 2 only4.) 2 and 3
General
4 months ago
Justin runs at a constant rate, traveling 17 \text{ km}17 km17, start text, space, k, m, end text in 222 hours. Write an equation that shows the relationship between ddd, the distance he runs in kilometers, and hhh, the time he spends running in hours.
General
4 months ago
1/4 of a rod was painted red. 2/5 was painted orange and 2/7 of the remainder was painted yellow. The yellow section was 20cm long how long was the rod
General
4 months ago
A rectangle has sides in the ratio 1:3 a)Write down the length of the longer side of the length of the shorter side is: (i) 1 cm (ii) 2 cm (iii) 5 cm
General
4 months ago
How to solve the problems
General
4 months ago
i need answers for 1 and 2
General
4 months ago
Number 31 please help
General
4 months ago
When do you need to rationalize the denominator? My physics teacher says that you don't have to if you are isolating a variable.
General
4 months ago
can you tell me if they are proportional or nonproportional
General
4 months ago
Osmin had a gross pay of 624.86 last week. She earns 12.85 per hour plus a 3% commission on all sales. She knows she worked 40hrs last week but can't remember her total sales. What were her total sales ?
General
4 months ago
Jasmine has 84 flowers available to make bouquets for the farmer's market. To make the bouquets more appealing to theshe would like to have an odd number of flowers in each. She wants to use all of the available flowers. To meet lasminesrequirements, how many flowers could she put in each bouquet?HELP PLZZ
General
4 months ago
Louis bought a burger and soda for $8. Kate purchased a slice of pizza and soda for $9. Biff purchased a burger, a slice of pizza and a soda for $13.50 what is the equation for each purchase?
General
4 months ago
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