All categories

3 years ago

Could someone help?

Mathematics

2 answers:

Kisachek [45]3 years ago

5 0

Answer:

-1 ≥ z > -1.8

Step-by-step explanation:

Maybe you want to find the solution set.

Subtract 3 from the inequality:

5 ≤ -5z < 9

Divide by -5:

-1 ≥ z > -1.8

_____

Personally, I like to write these with the inequality symbols pointing to the left. That way, the elements of the expression are in number-line order.

-1.8 < z ≤ -1

lapo4ka [179]3 years ago

3 0

Answer:

Step-by-step explanation:

subtract 3 from each

8-3≤3-5z-3<12-3

or 5≤-5z<9

divide by 5

5/5 ≤ -5z/5<9/5

or 1≤-z<1.8

multiply by -1

-1 ≥z>-1.8

or -1.8≤z<-1

You might be interested in

Caitlyn and Steve are planning their wedding reception and must decide between two catering halls. The first site, A Wedding Spa

anzhelika [568]

The guest they can invite so that the cost they pay will be the same at both wedding catering halls is 18.

<h3>What is a system of equations?</h3>

A system of equations is two or more equations that can be solved to get a unique solution. the power of the equation must be in one degree.

The given equation is

900+50x=450+75x

To solve;

900 - 450 = -50x +75x

450 = 25x

x = 450 /25

x = 18

The guest they can invite so that the cost they pay will be the same at both wedding catering halls is 18.

Learn more about equations here;

brainly.com/question/10413253

#SPJ1

8 0

2 years ago

Use a Venn diagram to answer.<br> If n(A) = 8, n(B) = 9 and n(An B) = 6, what is n(AUB)?

marin [14]

Answer:

$n(A \cup B) = 6$

Step-by-step explanation:

In Venn sets, we have that:

$n(A \cup B) = n(A) + n(B) - n(A \cap B)$

In which n is the number of elements that each set contains.

In this question:

$n(A) = 8, n(B) = 9, n(A \cap B) = 6$

$n(A \cup B) = n(A) + n(B) - n(A \cap B) = 8 + 9 - 6 = 17 - 6 = 11$

$n(A \cup B) = 6$

7 0

3 years ago

Previous problem : From Andy's house to Billy's hometown you can travel by 3 roads. And to get from Billy's hometown to Willie's

brilliants [131]

Answer:

Andy's house to Billy's hometown 15 ways

Andy's house to Willie's hometown 2 ways.

Step-by-step explanation:

Andy's house to Billy's hometown there are 3 roads. There 5 road from billy's hometown to Willie's house . In total there will be 15 ways to travel which is calculated by 3 * 5. For traveling to Willie's hometown there will be two ways. There are two roads that are built to get to Willie's house.

3 0

3 years ago

The model represents an equation what value of X makes the equation true

Tanya [424]

Answer:

A Solution is a value we can put in place of a variable (such as x) that makes the equation true.

Step-by-step explanation:

3 0

4 years ago

Matt has started a car washing

IrinaK [193]

Answer:

great how much to get your car washed

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers