1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Korolek [52]
3 years ago
15

{8} ⊆ {7,8,9} true or false

Mathematics
2 answers:
Natalija [7]3 years ago
6 0

the answer is false

.....................................

Triss [41]3 years ago
6 0

Answer:

Homework #1-18: Answer yes or no, if no give the reason

1) Is A ⊆ B given A = silver, B = {gold, silver, diamond}

A is not a set, so it can’t be a proper subset.

Answer: no, because A is not a set

3) Is C ⊆ D given C = {Phoenix}, D = {Phoenix, Glendale, Peoria, Scottsdale}

I need two rules to work.

C is a set so rule 1 is satisfied.

Every element of C is also an element of D, so rule 2 is satisfied.

Answer: yes

5) Is A ⊆ B given A = {2,3} , B = {1,2,3,4,5}

I need two rules to work.

A is a set so rule 1 is satisfied.

Every element of A is also an element of B, so rule 2 is satisfied.

Answer: yes

7) Is A ⊆ B given A = a, B = {| }

A is not a set, so it can’t be a proper subset.

Answer: no, because A is not a set

9) Is A ⊆ B given A = { }, B = {1,2,3,4,5}

Answer yes: the empty set is a subset of every set.

11) Is S ⊂ T given, S= ∅, T = {1,2,3,4,5}

Answer yes: the empty set is a subset of every set.

13) Is A ⊂ B given A = {1,2,3}, B = {3,2,1}

This is not a true statement. The sets are equal and this symbol does not allow sets to be equal.

Answer: no, sets are equal

15) Is C ⊂ D given C = {1,2,3,4,5}, D = {1,2,3,4}

Answer: no, C is not contained in D, so this is not true

17) Is A ⊂ B given A = {4,3,2,1 }, B = {1,2,3,4,5}

A is a set so rule 1 is satisfied,

A is contained in B so rule 2 is satisfied

A is not equal to B so rule 3 is satisfied

Answer: yes (all 3 rules are satisfied)

Homework #19 – 34: Determine which of these are true. (Choose every answer that is true, in

many instances there will be more than one correct choice.)

A = B, A ⊆ B, B ⊆ A, A ⊂ B, B ⊂ A, or none of these

19) A = {Trix, Captain Crunch, Rice Krispees} B = {Rice Krispees}

B is contained, but not equal to A. B is both a subset and a proper subset of A.

A is not contained in B

The sets are not equal.

Answer: B ⊆ A, B ⊂ A

Step-by-step explanation:

here all of it

You might be interested in
I need help with this I will mark brainiest answer if it is correct please help
VARVARA [1.3K]

Answer:

C=40030.17

Step-by-step explanation:

2 x pi x 6371 =40030.17 hope this is what you're looking for :)

7 0
3 years ago
I need help. I'm failing math
Alexxandr [17]

Answer:

B i believe

Step-by-step explanation:

6 0
2 years ago
What is an explicit formula for the geometric sequence -64,16,-4,1,... where the first term should be f(1).
nirvana33 [79]

Answer:

a_{n} = -64(-\frac{1}{4})^{n-1}

it seems like the first term is -64, so lets write the formula accordingly:

a_n = a1(r)^(n-1)

where 'n' is the number of terms

a1 is the first term of the sequence

'r' is the ratio

the ratio is -\frac{1}{4} because -64 * -\frac{1}{4} = 16 and so on...

the explicit formula is :

a_{n} = -64(-\frac{1}{4} )^{n-1}

7 0
3 years ago
Simplify to create a equivalent expression.
Ratling [72]

Answer:

\boxed{\bold{66k+9}}

Explanation:

Expand \bold{5\left(10k+1\right): \ 50k+5}

= \bold{50k+5+2\left(2+8k\right)}

Expand \bold{2\left(2+8k\right): \ 4+16k}

= \bold{50k+5+4+16k}

Simplify \bold{50k+5+4+16k: \ 66k+9}

= \bold{66k+9}

Mordancy.

7 0
3 years ago
Read 2 more answers
The function p(x) is an odd degree polynomial with a negative leading coefficient.
Aliun [14]
A because it’s the right answer
4 0
3 years ago
Other questions:
  • 13
    6·1 answer
  • Are you a NASA engineers President Kennedy's
    7·1 answer
  • 4 3/5 times 7 expain
    12·1 answer
  • It took Jaytree 42 seconds to rip about half a DVD. About what is Jaytree’s “ripping rate” in DVDs per minute?
    14·1 answer
  • Help anyone? I've been trying to go through the lessons again and i can't figure this one out.
    6·1 answer
  • We generally report a measurement by recording all of the certain digits plus​ ______ uncertain​ digit(s).
    14·1 answer
  • Please hurry and explain
    6·2 answers
  • What is. 8x + 5 = 6x +9
    5·2 answers
  • Never mind this question
    14·2 answers
  • The parks department is planting trees. Maple trees cost $50 and Oak trees cost $25. The tree planting budget is $800. What is t
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!