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Semmy [17]
3 years ago
14

10×3/5 A. 12 B. 5 C. 6*** D.8 1/5×8? A. 5/8 B. 1 2/5 C. 1 3/5*** D. 1 4/5 Two thirds of jacks sports cards are baseball cards. i

f he has 93 cards, how many are baseball cards? A. 186 B. 140 C. 62**** D. 31 4. three fifths of 30 days in June were sunny. how many days were sunny? A. 3 B. 5 C. 12*** D. 18 Jamie has a bag of dog treats. she gives her dogs 1/4 cups of treats each day. if she gives her dogs treats for 7 days, how many cups does she use? A. 7 1/4 B. 3 2/3 C. 8 D. 1 3/4*** please help Now!
Mathematics
1 answer:
Natalka [10]3 years ago
8 0

Answer:


Step-by-step explanation:

1. Which of the following does not represent the set of integers divisible by 4 from 1 to 40?

a. {4, 8, 12, 16, 20, 24, 28, 32, 36, 40}

b. {integers divisible by 4 from 1 to 40}

c. {4, 8, 12 …, 32, 36, 40}

d. {4, 8, 12 …}


The answer is D. The set in choice D contains the numbers divisible by 4 from four to infinity. It does not stop at 40 as do the others.


Question 2


Which of the following is a subset of the set

A: {integers divisible by 5 from 1 to 30}


a. {5, 10, 15 …}


b. {integers divisible by 10 from 1 to 50}


c. {30, 35, 40}


d. {10, 15, 20} < this is, because all three are numbers between 1 and 30 divisible by 5


D



Question 3


Choose the correct statement about the given Venn Diagram.


http://i666.photobucket.com/albums/vv26/...


a. A total of 13 people surveyed like cookies.


b. A total of 18 people were surveyed.


c. More of the people surveyed like cookies than cake.


d. Everyone surveyed like cake and cookies.


A. there are 13 people within the "cookies" circle


Question 4


If C = {integers divisible by 2 from 1 to 12} and D = {integers divisible by 4 from 1 to 16}, what is C ∩ D?


a. {4, 8, 12}


b. {2, 4, 6, 8, 10, 12, 16}


c. {8, 12}


d. { }


the symbol ∩ means intersection. that means the one that has all of the terms that are in both sets. the answer to this is A


Question 5


If A = {2, 4, 6, 8, 10, 12, 14} and B = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, what is A B?


a. { }


b. {1, 2, 2, 3, 4, 4, 5, 6, 6, 7, 8, 8, 9, 10, 10, 12, 14}


c. {2, 4, 6, 8, 10}


d. {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14}


Not 100% sure on this one, but AB would contain every term from both sets. I don't think you need doubles, so I believe the answer is D. Sorry.


Question 6


If A = {integers divisible by 2} and B = {integers}, what is A ∩ B?


a. {…−3, −2, −1, 0, 1, 2, 3 …}


b. { }


c. {0}


d. {… −6, −4, −2, 0, 2, 4, 6 …}


D. since all integers divisible by two are also in the set if integers, the answer is just integers divisible by 2, or D


Question 7


If U = {positive integers} and subset M = {positive even integers}, what is M'?


a. {positive integers}


b. {2, 4, 6, 8, …}


c. {1, 3, 5, 7, …}


d. { }


I do not know what the ' is for in M'. Apologies. Assuming it means "not" the answer would be B.


Question 8


If W = {1, 2, 3, 4 …} and subset Z = {positive odd integers}, what is Z'?


a. {1, 2, 3, 4 …}


b. { }


c. {5, 6, 7, 8 …}


d. {2, 4, 6, 8, …}


Same as #7. Assuming ' means "not," the answer is D.


Question 9


Let A = {1, 2, 3} and let B = {4, 5}. Find A X B.


a. {(1, 4), (1, 5), (2, 4), (2, 5), (3, 4), (3, 5)}


b. {1, 2, 3, 4, 5}


c. { }


d. {1, 2, 3}


A. They should become ordered pairs, like this.


Question 10


The domain of the following relation: R: {(3, 5), (8, 6), (2, 1), (8, 6)} is


a. No domain exists


b. {1, 5, 6}


c. {3, 8, 2, 8}


d. {2, 3, 8}


D. The domain is the set of all "x" values, or the first in the ordered pair.


Question 11


The range of the relation below is


x y

−1 10

2 10

5 4

0 3



a. {3, 4, 10}


b. {−1, 0, 2, 5}


c. {10, 10, 4, 3}


d. No range exists.


A. Range is all Y values.


Question 12


Which of the following does not represent a function?


a. x −2 0 1 −2 9

y 0 −1 −2 −3 −4



b. x 3 6 9 12 18

y 2 4 6 8 10



c. x −3 −1 0 2 4

y −6 −4 −3 −2 −1



d. x 8 7 4 3 1

y −7 −5 −3 −2 −1


A. Because one x value (x = -2) has 2 different corresponding y values.


Question 13


Which of the following does not represent a function?


!!nothing here!!



Question 14


Is the following relation a function?


!!nothing here!!


Yes

No



Question 15


Given the function g(x) = −4x + 5, find g(−4).


a. −11


b. 21


c. 2.25


d. 11


replace x with -4

g(-4) = -4(-4)+5 = 16+5 = 21. B



Question 16


If f(x) = 2x2 − 10, find f(5).


a. 90


b. 10


c. 7.5


d. 40


f(5) = 2(5)^2-10 = 2(25) - 10 = 50-10 = 40. D


Question 17


If h(x) = −5x − 10, find h(−2).


a. −20


b. 1.6


c. −1


d. 0


h(-2) = -5(-2) - 10 = 10-10 = 0. D


Question 18


Given the function f(x) = 2(x + 6), find x if f(x) = 22.


a. 56


b. 5


c. 38


d. 17


f(x) = 2(x+6) = 22

2(x+6) = 22

2x + 12 = 22

2x = 10

x = 5. B


Question 19


Given the function f(x) = −2x + 8, find x if f(x) = 22.


a. −36


b. −7


c. 52


d. −15


f(x) = -2x + 8 = 22

-2x = 14

x = -7


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