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3 years ago

7x+y+3=y Graphing linear equations

Mathematics

1 answer:

PolarNik [594]3 years ago

5 0

Answer:

y=3.5x+1.5

Step-by-step explanation:

Move the y to the other side. 7x+3=2y

Divide by 2. 3.5x+1.5=y

Therefore the linear equation is y=3.5x+1.5

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Are the ratios of the number of people to the number of rollercoaster cars in a proportional relationship? Explain your reasonin

LiRa [457]

Answer:

the answer will be 366:81

Step-by-step explanation:

you will find value of ratio 3:18

then divide 366:61

7 0

3 years ago

Hal says the volume of the sphere shown below 36 cm3. Find the correct volume, using 3.14 for pi. Round to the nearest hundredth

adelina 88 [10]

Answer:

Volume of sphere is $35.98cm^3$

Step-by-step explanation:

It is given that Hal says that volume of sphere is $36cm^3$

Volume of sphere is given by $V=\frac{4}{3}\pi r^3$

$\frac{4}{3}\pi r^3=36$

$\pi r^3=27$

$r^3=8.594$

$r=2.048cm$

Now using 3.14 in place of $\pi$

Now volume of sphere is

$V=\frac{4}{3}\times 3.14\times 2.048^3$

$V=35.98cm^3$

Therefore volume of sphere when we use 3.14 in place of $\pi$ is $35.98cm^3$

And the Hal likely error is he uses $\pi$ directly for calculation of volume.

7 0

3 years ago

When calculating the circumference of a circle, sometimes the radius is given instead of the diameter. What is the relationship

alex41 [277]

The diameter is double the size of the radius

3 0

2 years ago

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The average annual income, I, in dollars, of a lawyer with an age of x years is modeled with the following function: I=-425x²+45

olchik [2.2K]

DI/dx=-850x+45500

d2l/d2x=-850 so when dl/dx=0 it is an absolute maximum for l(x)...

dl/dx=0 only when:

850x=45500

x=53.53

x=54 years of age (rounded)

3 0

3 years ago

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PLEASE HELP I NEED THIS DONE Chan deposited money into his retirement account that is compounded annually at an interest rate of

rjkz [21]

Answer:

No, equivalent quarterly rate will be approx 1.75%

Step-by-step explanation:

Given that Chan deposited money into his retirement account that is compounded annually at an interest rate of 7%.

We know that there are 4 quarters in 1 year.

So to find that equivalent quarterly we will divide given yearly rate by number of quarters.

That means divide 7% by 4.

which gives 1.75%.

But that is different than Chan's though of 2% quarterly interest.

Hence Chan is wrong.

8 0

2 years ago