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3 years ago

Question is in picture (9th grade algebra 1)

Mathematics

1 answer:

LiRa [457]3 years ago

4 0

Answer:

wouldnt it be 2.05

Step-by-step explanation:

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Find the solution of the equation below algebraically check your answer n+14=15

horrorfan [7]

The way to find an unknown is to isolate it.
n+14(-14)=15(-14)
n=1
Then we can check our answer by plugging it into the equation.
1+14=15
15=15
So n=1.

7 0

3 years ago

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Identify the volume of the composite figure. Round to the nearest tenth.

Anna007 [38]

Answer:

474.5 ft ³

Step-by-step explanation:

1) Find the volume of the cube

$A=l^3$ where l is the side length

Plug in 9 ft as l

$A=9^3\\A=729$

Therefore, the volume of the cube is 729 ft³.

2) Find the volume of the cylinder

$A=\pi r^2h$ where r is the radius of the base and h is the height of the cylinder

Plug in 3 ft as the radius and 9 as the height

$A=\pi (3)^2(9)\\A=\pi (9)(9)\\A=81\pi \\A=254.5$

Therefore, the volume of the cylinder is approximately 254.5 ft ³.

3) Subtract the volume of the cylinder from the volume of the cube

729 ft³ - 254.5 ft ³

= 474.5 ft ³

Therefore, the volume of the figure is 474.5 ft ³.

I hope this helps!

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3 years ago

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If equation of a circle is x^2 + y^2 + 6x + 4y + 10 = 1 What is this equation written in its standard form?

Darya [45]

$\text{The equation of a circle in standard form:}\\\\(x-h)^2+(y-k)^2=r^2\\\\(h,\ k)-center\\r-radius\\---------------------------\\\\Use\ (a+b)^2=a^2+2ab+b^2\\\\---------------------------$

$x^2+y^2+6x+4y+10=0\qquad\text{subtract 10 from both sides}\\\\x^2+6x+y^2+4y=-10\\\\x^2+2x\cdot3+y^2+2y\cdot2=-10\qquad\text{add}\ 3^2\ \text{and}\ 2^2\ \text{to both sides}\\\\(x^2+2x\cdot3+3^2)+(y^2+2y\cdot2+2^2)=-10+3^2+2^2\\\\(x+3)^2+(y+2)^2=-10+9+4\\\\\boxed{(x+3)^2+(y+2)^2=3}$

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3 years ago

Please help *THIS IS ON PERSONAL FINANCIAL LITERACY "

Crank

Answer:

I think the answer is $56,600

Step-by-step explanation:

I'm pretty sure you're just going to add $63,000+$8,400+$2,900+$1,1000. Then when you get a total of $75,400 and then I think you are going to subtract $15,400 from $75,400, you should get $60,000 then subtract $3,400 and you get $56,600.

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3 years ago

1. What are the solutions to the quadratic equation

Hitman42 [59]

X^2 -36 = 0 the ans is X=6 and x =-6 because 6^2=36

6 0

4 years ago

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