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murzikaleks [220]
3 years ago
11

Brainliest and points!

Mathematics
2 answers:
Alex787 [66]3 years ago
5 0

the last one should be the correct answer

hram777 [196]3 years ago
4 0

Answer:

number 4 is the answer to the question

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Write each set of numbers in set-builder and interval notation<br><br> X&gt;50
KiRa [710]

Answer:

\{x\ E\ Z\ |\ x > 50\} ---- Set Builder

(50, ∞)  ---- Interval Notation

Step-by-step explanation:

Given

x > 50

Required

Write as a

- Set builder

- Interval notation

As Set Builder:

x > 50 means that x is an integer and x is greater than 50.

In set builder notation, integers are represented with z.

So, the above can be represented as:

\{x\ E\ Z\ |\ x > 50\}

This translates to:

x is a member of the set of integers such that x is greater than 50

As Interval Notation:

In interval notation, we make use of brackets to represent the intervals.

In this case > is represented by (a,b)

Where a and b are the intervals of the notation

Since x > 50, then a = 50 and b = ∞ because we only know the starting point and not the end point.

<em>Hence: x > 50 in interval notation is (50, ∞)</em>

7 0
3 years ago
Retail price: $745; discount rate: 12.5% what is the discount?
Mariulka [41]

Answer:

mmmmmmmm

Step-by-step explanation:

the answer ................

7 0
3 years ago
Formulate a system of equations for the situation below and solve. Michael Perez deposited a total of $2000 with two savings ins
777dan777 [17]

Answer:

DA= $800 and DB= $1200

Step-by-step explanation:

Equation I (Interest of Bank A):

IA= 0.06/year*DA  *1year (DA= Deposit in Bank A)

IA= 0.06*DA

Equation II (Interest of Bank B):

IB= 0.08/year*DB *1year  (DB= Deposit in Bank B)

IB= 0.08*DB

Total interest:

TI=IA+IB=$144

Total deposit:

TD= DA +DB= $2000

Adding equations I and II:

IA+IB = 0.06DA +0.08DB

$144= 0.06DA+0.08DB

(DB= $2000-DA)

When replacing DB:

$144= 0.06DA + 0.08($2000-DA)

Applying distributive property:

$144= 0.06DA + (0.08*$2000) -0.08DA

$144= -0.02DA + $160

0.02DA= $160-$144

0.02DA = $16

DA= $16/0.02

DA= $800

DB= $2000-$800

DB= $1200

3 0
4 years ago
Read 2 more answers
Expand the binomial (3x^2+2y^3)^4
artcher [175]

Answer:

<h2><u><em>Hope it helps!!!brainliest pls!!!</em></u></h2>

6 0
2 years ago
What is the doubling time of bacteria if you start with two bacteria and there are 128 bacteria after 3hrs?
iogann1982 [59]

Answer:

B) 30min

Step-by-step explanation:

Start with 2 and continue to multiply that by 2 until you get 128

2 x 2 = 4

4 x 2 = 8

8 x 2 = 16

16 x 2 = 32

32 x 2 = 64

64 x 2 = 128

Then start with what you think could be the right answer based on how many intervals there are.

You know it can't be 15 because there definitely isn't enough and you know its not 1hr because theres way more than 3.

So you're left with either B) 30min or C) 45min

It has to be B) 30min because there are 6 intervals and 30min goes into an hour twice, meaning that if every 2 intervals is an hour there are 3 hours.

5 0
4 years ago
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