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ziro4ka [17]
2 years ago
10

How to do this equation y=2x-10 and 2y=x-8

Mathematics
1 answer:
Lana71 [14]2 years ago
8 0

Answer:

y=2x-10

2y=x-8

since the second equation equals 2y and the first is y that means the first equation times 2 equals the other one

4x-20=x-8

-x

3x-20=-8

+20

3x=12

x=4

then lets just plug it in

2y=4-8

simplefy

2y=-4

y=-2

(4,-2)

Hope This Helps!!!

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Mr Lee has a family of 6 people and Mrs Scarlett has a family of 4. They were given 15 kg of chocolate
faust18 [17]

Answer:

Mr. Lee takes home 9 kg of chocolate.

Mrs. Scarlet takes home 6kg of chocolate.

Step-by-step explanation:

Mr. Lee has a family of 6 people, and Mrs. Scarlett has a family of 4 people.

Together, the total number of people is 6 + 4 = 10

If we divide evenly the chocolate between all 10, then each one gets the same amount.

Then we need to do the quotient:

15kg/10 = 1.5kg

This means that each person gets 1.5kg of chocolate.

And Mr. Lee has 6 on his family, then the amount of chocolate that Mr. Lee takes home is 6 times 1.5 kg

6*1.5kg = 9kg

Mr. Lee takes home 9 kg of chocolate.

Mrs. Scarlett has a family of 4 people, then she takes home 4 times 1.5kg of chocolate, this is:

4*1.5kg = 6kg

Mrs. Scarlet takes home 6kg of chocolate.

8 0
3 years ago
The relationship between the minutes a candle is burned and the size of the candle in millimeters is shown on the graph.
AnnyKZ [126]

Based on the function shown on the graph, the statement that is true is: <em>D. The candle started at 9 mm and shrinks 5 mm every 4 minutes</em>.

<h3>What is a Function?</h3>

A function is a relationship between input and output values.

On a graph, the average rate of change represents the unit rate, while the point where the line intercepts the y-axis is the initial value or starting value.

Therefore:

The starting value = 9 mm (the candle length when it started burning).

In conclusion, based on the function shown on the graph, the statement that is true is: <em>D. The candle started at 9 mm and shrinks 5 mm every 4 minutes</em>.

Learn more about function on:

brainly.com/question/10439235

4 0
3 years ago
Find the volume of the solid below.
Wewaii [24]

Answer:

385 cm volume

Step-by-step explanation:

Length-- 7

width-- 5

height-- 1 1

Volume formula -- L times W times H = V.

Multiply all those and you get 385cm squared.

have a great Day!!!!!

4 0
3 years ago
Daniela can swim 90 meters in 30 minutes what is Daniels meter rate?
o-na [289]
3 meters per minute
3 0
3 years ago
Read 2 more answers
Find the area of the following shape
blsea [12.9K]

Answer:

56.8 m²

Step-by-step explanation:

This shape is clearly a trapezium / trapezoid. So :  

Area of a trapezium is given by the formula :

\frac{a+b}{2} h

Substitute values given in diagram :

a = 4.2

b = 10

h = 8

(\frac{4.2+10}{2} )8

7.1 × 8 = 56.8

Units will be m² as this is area

Giving us our final answer of 56.8 m²

8 0
2 years ago
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