09/16/19
please help please
How many gallons of fuel costing $1.15 per gallon must be mixed with 20 gallons of a fuel costing $0.85 per gallon to obtain a mixture costing $1 per gallon?
09/16/19
Write an equation that expresses the relationship. Then solve the equation for u
V varies jointly as c and the sum of u and m
09/16/19
confuse right now
A car leaves Beloit, heading east at 50 mph. One hour later, a second car leaves Beloit, heading east at 65 mph. How long will it take for the second car to overtake the first car?
Mathematical expression
How to translate this into words ∀x,y ∈ ℝ, (x+y)²=x²+2xy+y²
09/16/19
A bird species in danger of extinction has a population that is decreasing exponentially (𝐴=𝐴0𝑒𝑘𝑡).
7 years ago the population was at 1640 and today only 1090 of the birds are alive. Once the population drops below 190, the situation will be irreversible. When will this happen? Hint: When you...
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on description hehehs
Given the infinite geometric series: 7-2.8+1.12-0.448+... What is the particular value that the sums are approaching?
09/15/19
How do I find all the points on a Cartesian Plane that are exactly 5 units from a given coordinate, such as (3,1)
I got given this question in my maths class. I know it uses the formula for distance on a Cartesian Plane but I'm unsure how to work this question out
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09/14/19
How do I solve this inequality, 4x−7 < 12 and 3x + 5 > 11?
My homework says to solve, #6. 4x−7 < 12 and 3x + 5 > 11 in algebraic form. Does this mean I solve each inequality separately and then combine both answers? If so I got: 2<x<19/4 Or...
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09/14/19
Consider the function f(x)=−x2+6 on the domain [0,∞). Use the range of f(x) to determine the domain of f−1(x). What is the domain of f−1(x)?
OPTIONS:−6<x<6−∞<x≤66<f−1(x)<∞−∞<f−1(x)≤66<x<∞−6<f−1(x)<6
09/14/19
MTH 266 HW 2 Problem #1
Is the following valid? Why or why not?For square matrices A and B with Real entries: (A+B)2 = A2+ AB+B2
09/14/19
probability answer
A card is drawn from a well-shuffled deck of 52 cards. Find the probability that the card is a red card or a 5.
09/13/19
What is the average speed of the round trip?
Suppose you run 5 miles from your house to a friend’s house at a speed of 4 miles per hour. When the time comes to return home, you are tired and walk the same 5 miles home at 2 miles per hour.
09/13/19
Find the endpoint
the midpoint M of BC has coordinates (5,5). Point B has coordinates (6,0). Find the coordinates of point C.
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09/13/19
use the intermediate value theorem to show that there is a root of the equation in the specified interval
e^x=3-2x, (0,1)
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09/13/19
I don't understand this problem I have tried so many times to get it corrected
Jina borrowed 8000 at a rate of 18% , compounded monthly. Assuming she makes no payments, how much will she owe after 4 years
F and H are sets of real numbers...
F={x | x > 4}H={x | x >= 6}Write F^H and FvH using interval notation.if the set is empty, write 0.F^H=[]FvH=[]
09/12/19
Find all values (inequality) of r that guarantee r - 2|x-2| = 8 has no solutions for x?
(A) {r | r < 8}(B) {r | r >= 10}(C) {r | r <= 2}(D) {r | r > -4}
09/12/19
Find the values of a and b that make f continuous everywhere
(x2-4)/(x-2) if x < 2ax2 - bx +1 if 2 <_ x < 34x-a-b if x >_ 3
09/12/19
I don't understand how to solve a problem by "completing the square"
Here is an example problemm² + 10m + 7 = 0I don't understand how to solve it like this...
09/12/19
Brain Teaser from my school agenda
if sam gives 7 baseball cards to lee, lee will then have 5 times as many cards as sam. However, if lee gives sam 7 baseball cards, both will have the same number of cards. How many cards does each...
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