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Karolina [17]
3 years ago
7

After john worked at a job for 10 years, his salary doubled. If he started as $ x, his salary after 10 years is

Mathematics
1 answer:
Marianna [84]3 years ago
7 0

Answer:

2x

Step-by-step explanation:


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This was given to me during a summative test and the teacher didn't bother giving me the correction. I just cannot figure it out
Dmitry [639]
  • Base be y

ATQ

\\ \sf\longmapsto xy=6050\dots 1

\\ \sf\longmapsto 2(x+y)=220\implies x+y=110\dots 2

Now

\\ \sf\longmapsto (x+y)^2=x^2+y^2+2xy

\\ \sf\longmapsto 110^2-2(6050)=x^2+y^2

\\ \sf\longmapsto 12100-12100=x^2+y^2

\\ \sf\longmapsto x^2+y^2=0\dots(3)

From all equations

\\ \sf\longmapsto (x-y)^2=x^2+y^2-2xy

\\ \sf\longmapsto (x-y)^2=0-2(6050)

\\ \sf\longmapsto (x-y)^2=-12100

\\ \sf\longmapsto (x-y)=110\dots(4)

Now

Adding 3 and 4

\\ \sf\longmapsto 2x=220

\\ \sf\longmapsto x=110m

One side won't be covered hence

  • y=2(110)=220m
7 0
2 years ago
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Analyze the situation(s).
allochka39001 [22]

Answer:

is there a graph so I can show you?

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2 years ago
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Find the lateral surface area of the can of mandarin oranges. Round your answer to the nearest tenth. Radius: 4cm, Height: 11cm
Vedmedyk [2.9K]

Answer:

276.3cm²

Step-by-step explanation:

The lateral surface area is the area of all the sides of a 3-dimensional object excluding its base and top.

A can is in the shape of a cylinder

Lateral surface area of a cylinder = 2πrh

π = pi = 3.14

h = height = 11

r = radius = 4

2 x 3.14 x 4 x 11 = 276.32 cm²

to the nearest tenth = 276.3 cm²

the tenth is the first number after the decimal place. To convert to the nearest tenth, look at the number after the tenth (the hundredth). If the number is greater or equal to 5, add 1 to the tenth figure. If this is not the case, add zero

7 0
3 years ago
Please help me I don’t know the answer
lukranit [14]

Answer:

D

Step-by-step explanation:

the highest real number stops at 4, which means all the sets of real number are less than 4.

4 0
3 years ago
NEED HELP ASAP PLEASEEEEEEEEEE
tester [92]

Answer:

1. No

2. Yes

3. No

4. Yes

5. No

Explanation:

If a data point has the same x coordinate of another data point. Then it's not a function.

PS:

Can I have Brainliest?

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