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Li rolls a number cube that has sides labeled 1 to 6 and then flips a coin. What is the probability that she rolls an odd number and flips tails?
General
4 months ago
Trees in urban areas help keep air fresh by absorbing carbon dioxide. A city has $2100 to spend on planting spruce and maple trees. The land available for planting is 45,000 square feet. Spruce trees cost $30 to plant and require 600 square feet of space. Maple trees cost $40 to plant and require 900 square feet of space. Spruce trees absorb 650 lb/yr of carbon dioxide and maple trees absorb 300 lb/yr of carbon dioxide. How many of each tree should the city plant to maximize carbon dioxide absorption?
General
4 months ago
Find the equation, f(x) = a(x-h)2 + k, for a parabola that passes through the point (8,12) and has (6,10) as its vertex. What is the standard form of the equation? A) The vertex form of the equation is f(x) = 1 2 (x - 6)2 + 10. The standard form of the equation is f(x) = 1 2 x2 - 6x + 28. B) The vertex form of the equation is f(x) = 1 2 (x + 6)2 + 10. The standard form of the equation is f(x) = 1 2 x2 + 6x + 28. C) The vertex form of the equation is f(x) = 1 2 (x - 6)2 - 10. The standard form of the equation is f(x) = 1 2 x2 - 6x - 28. D) The vertex form of the equation is f(x) = − 1 2 (x - 6)2 + 10. The standard form of the equation is f(x) = − 1 2 x2 - 6x + 28.
General
4 months ago
Select all that apply. Which of the following are equivalent to 0.625? 625/1,000 100/625 5/8 125/200 20/125
General
4 months ago
Miguel’s steps in evaluating an expression are given below. 32/2(2^3-4) Step 1: =32/2(8-4) Step 2: =32/2(4) Step 3: =32/8 Step 4: =4 What, if any, was Miguel’s mistake? Miguel made no mistakes. Miguel incorrectly evaluated 2³ in step 1. Miguel incorrectly multiplied before dividing in step 3. Miguel should have used the distributive property in step 1.
General
4 months ago
In an experiment you are to flip a two sided coin 100 times and record 55 heads up and 45 tails up. Determine the theoretical and experimental probability of getting a heads up in the experiment.1. theoretical = ; experimental = 2. theoretical = ; experimental = 3. theoretical = ; experimental = 4. theoretical = ; experimental = PLEASE HELP
General
4 months ago
A train travels at a constant rate of 45 miles per hour.a. What is the distance, d, in miles, that the train travels in t hours?b. How many miles will it travel in 2.5 hours?0
General
4 months ago
i need helphdhhd;hhdhdjdjieieieiieieii
General
4 months ago
does choosing a blue marble represent the complement event of choosing a red marble
General
4 months ago
What is the equation, in point-slope form, of the line that is perpendicular to the given line and passes through the point (−4, −3)?
General
4 months ago
The perpendicular bisector of side ab of ∆abc intersects the extension of side ac atd. find the measure of ∠abc if m∠cbd = 16° and m∠acb = 118°.
General
4 months ago
A card is drawn at random from an ordinary deck of 52 playing cards. find the probability that it is:a. an aceb. a jack of heartsc. a three of clubs or a six of diamondsd. a hearte. any suit except hearts f. a ten or a spade g. an ace, given that an ace has already been drawn
General
4 months ago
Fifty-three students are going on a field trip. the students are divided into groups of 6 students. how many groups of 6 students will there be? if the remaining students form a smaller group, and one chaperone is assigned to every group, how many total chaperones are needed?
General
4 months ago
Variable rate loans typically have a 1)________ interest rate than fixed rate loans because with variable rate loans, the borrower assumes the risk that the interest rate might 2)_________. Lower, Decrease Lower, Increase Higher, Increase Higher, Decrease
General
4 months ago
The ratio of marbles to stones in a large pot 6 to 7. if there are 42 marbles, then how many stones are there
General
4 months ago
Which situations can be represented by an exponential function? select each correct answer. an event organizer finds each year's attendance for the past five years is about 45 of the previous year's attendance. on the highway, kareem's car gets 38 mpg. shu fang has $25.75 deducted from her checking account every month. a toad population is increasing by about 7.5% each year?
General
4 months ago
The board of examiners that administers the real estate broker examination in a certain state found that the mean score on the test was 426 and the standard deviation was 72. If the board wants to set the passing score so that only the best 80%of all applicants pass, what is the passing score? assume tht the score are normally distributed. Draw the normal curve, label and shade the area.
General
4 months ago
Children under 10 years and older people over 65 years receive a discount on movie tickets. Let x represent the age of a person who receives a discount. Which inequality represents the age of a child who receives a discount? Which inequality represents the age of an older person who receives a discount? Which compound inequality represents the age of a person who receives a discount?
General
4 months ago
What was the percent of atmospheric co2 in 1850 if it was 280 ppm? move the decimal place 4 digits to the left to get percent (%)?
General
4 months ago
PLEASE HELP I HAVE NO IDEA You owe $1,853.42 on a credit card with a limit of $3,000.00 at a rate of 15.5% APR. You pay $400.00 the first 2 months and then $200.00 until the bill is paid off. You pay the bill on the due date each month. 1) Complete the table showing the decreasing debt. 2) How much is your last payment? 3) What is the total amount paid by the time you pay off the credit card? 4) What was your debt ratio at the beginning?
General
4 months ago
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