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Ede4ka [16]
3 years ago
6

OMG PLEASE HELP PLEASE OMG HELP ME HELP PLZ!!!!!!!!!! HELPPPPPPPPPPPPp

Mathematics
1 answer:
ivann1987 [24]3 years ago
3 0

17.5 mark brainlist plssssssssssssss

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Help me please<br><br>are opposite numbers always different
igor_vitrenko [27]
No they are not always diffrent
7 0
3 years ago
Read 2 more answers
Elimination/subtraction
denpristay [2]

Answer:

x = 0, y = 7

Step-by-step explanation:

Solving a system of equations using substitution requires one side to be equal to a variable present in the equation, in this case x or y. We should simplify the equation using elimination before substituting to reduce the chance of error.

In order to use the elimination method, you have to create variables that have the same coefficient—then you can eliminate them. These equations arew already aligned for us.

                  3x - 10y=-70

             -<u>   4x +9y = 63</u>

                  -x + y = 7

Now, for substitution, the equation must be set to a variable.

                  -x + y = 7

                  y = x + 7

Next, plug the equation in where applicable in another equation.

                  4x +9(x + 7) = 63

                  4x + 9x + 63 = 63

                  13x = 0

                  x = 0

The final step of substitution is to plug the known variable into an equation to find the other variable.

                  3(0) - 10y=-70

                  0 - 10y = -70

                  10y = 70

                  y = 7

I guarantee you this answer is correct, I worked it out using other methods and graphing prior to submitting this answer.

8 0
3 years ago
Read 2 more answers
Hazel McCurry offered $149,400 for a home that had been priced at $439,500. The seller agreed to the offer. If she made a $44,00
vredina [299]
149,400-44,000
=$105,400
8 0
3 years ago
Which sentence can represent the inequality 2.4 (6.2 minus x) greater-than negative 4.5?
-BARSIC- [3]

Answer: Choice B

Two and four tenths multiplied by the difference of six and two tenths and a number is more than negative four and five tenths.

======================================================

Explanation:

2.4 = 2 + 0.4

2.4 = 2 and 4/10

2.4 = 2 and 4 tenths

2.4 = two and four tenths

-------------------

Through similar reasoning,

6.2 = six and two tenths

And also,

-4.5 = negative four and five tenths

---------------------

Notice how 6.2 - x translates into "difference of six and two tenths and a number"

We then multiply that by 2.4, aka two and four tenths.

So that's how we get the phrasing "Two and four tenths multiplied by the difference of six and two tenths and a number"

All of this is greater than -4.5 aka negative four and five tenths.

This points us to Choice B as the final answer.

7 0
3 years ago
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What is the average rate of change between hour 15 and hour 30
adell [148]

Answer:

5 hours

Step-by-step explanation:

there is no picture so i'm gonna just sya 5 because 5 + 15 is 30 .

5 0
3 years ago
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