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2 years ago

PLZ HELP

Mathematics

1 answer:

Karolina [17]2 years ago

3 0

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X + 23 = −4 need help

laila [671]

Answer:

-27

Step-by-step explanation:

x+23−23=−4−23

x=−27

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2 years ago

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Use the drop-down menus to identify the career that matches each description.

jolli1 [7]

Answer:

D, B, C, and B

Step-by-step explanation:

I just did it

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2 years ago

Evaluate the expression 11C3

butalik [34]

Evaluating the expression 11C3 is very simple to do.

If you are assuming that C is the notation for the combination.
11!
11C3= ____

3!(11-3)!

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3 years ago

Mike bought five items for lunch that Cost a total of 4.55 .Hit dogs cost .1.10 each and cookies cost 0.75 each. What equation c

-Dominant- [34]

Answer:

$c + h = 5$ and

$0.75c + 1.10h = 4.55$

Step-by-step explanation:

Assume that Mike bought only cookies and hot dogs.

The total can be represented as:

$Cookies + Hot\ Dogs = 5$ --- (1)

And the amount spent can be represented as:

$Cost\ of\ cookies + Cost\ of\ hot\ dogs = 4.55$ --- (2)

Required

Determine the system of equation

Let c represents the number of cookies and h, number of hot dogs.

$Cookies + Hot\ Dogs = 5$ implies $c + h = 5$

And

$Cost\ of\ cookies + Cost\ of\ hot\ dogs = 4.55$

Cost of cookies = 0.75 * c

Cost of hot dogs = 1.10 * h

So, we have:

$0.75c + 1.10h = 4.55$

Hence, the equations are:

$c + h = 5$ and

$0.75c + 1.10h = 4.55$

Solving for c and h

Make c the subject in $c + h = 5$

$c = 5 - h$

Substitute 5 - h for c in $0.75c + 1.10h = 4.55$

$0.75(5- h) + 1.10h = 4.55$

$3.75- 0.75h + 1.10h = 4.55$

$3.75 +0.35h = 4.55$

Collect Like Terms

$0.35h = 4.55 - 3.75$

$0.35h = 0.8$

Solve for h

$h = 0.8/0.35$

$h = 2.28571428571$

$h =2$ -- approximated

Recall that:

$c = 5 - h$

$c = 5 - 2$

$c =3$

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2 years ago

Traveled 33 miles which is 55% of trip, what is total

Lorico [155]

60 miles would be the total miles in the trip

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2 years ago

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