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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Need help with this

blondinia [14]

Answer:

r = √(3V/(πh))
r ≈ 1.78 cm

Step-by-step explanation:

Multiply by the inverse of the coefficient of r², then take the square root.

$V=\dfrac{1}{3}\pi r^2h\\\\V=\dfrac{\pi h}{3}r^2\\\\r^2=\dfrac{3V}{\pi h}\\\\\boxed{r=\sqrt{\dfrac{3V}{\pi h}}}$

For V=50, h=15, this is ...

${r=\sqrt{\dfrac{3(50)}{\pi(15)}}=\sqrt{\dfrac{10}{\pi}}\approx\boxed{1.78\quad\text{cm}}$

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3 years ago

What is 2/3 times 4/5 as a decimal!

Nitella [24]

Hey there,

Your correct answer to $\frac{2}{3}$ × $\frac{4}{5}$ as a decimal would be 0.53

Your correct answer would be $\boxed{0.53}$

Hope this helps

~Jurgen

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3 years ago

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Which ordered pair is a solution of -x=y<br> A. (-1,-1) B. (1,-1) C.(1,1) D.(-1,-2)

AnnyKZ [126]

Answer:

(1,-1)

Step-by-step explanation:

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3 years ago

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Robert's car uses 5 gallons of gas to cover 170 miles. At this rate, how many gallons will he need for a 255-mile trip?

Talja [164]

170/5 = 34 mi/gallon
255/34 = 7.5 gallons

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3 years ago

Which describes the intersection of line M and line N

IrinaVladis [17]

Answer: A point

Step-by-step explanation:

To find the point of intersection algebraically, solve each equation for y, set the two expressions for y equal to each other, solve for x, and plug the value of x into either of the original equations to find the corresponding y-value. The values of x and y are the x- and y-values of the point of intersection.

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3 years ago