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Nadya [2.5K]
3 years ago
8

Solve for x. y=7x−7z−9

Mathematics
2 answers:
aleksandr82 [10.1K]3 years ago
6 0
You have to isolate the variable so you need to add 7z and 9 to both sides. You then get y+ 7z+ 9= 7x. Then divide 7x from both sides. The equation becomes x= y/7+ z + 9/7.
I hope this helps love! :)
AleksandrR [38]3 years ago
5 0

Answer:

The value of x is x=\frac{y+7z+9}{7}

Step-by-step explanation:

Consider the provided equation.  

y=7x-7z-9

We need to solve the equation for x.

Add 7z to both the sides.

y+7z=7x-7z+7z-9

y+7z=7x-9

Add 9 to both the sides.

y+7z+9=7x-9+9

y+7z+9=7x

Divide both sides by 7.

x=\frac{y+7z+9}{7}

Hence the value of x is x=\frac{y+7z+9}{7}.

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y = 1/2x - 9/2

Step-by-step explanation:

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A cylinder, cone, and sphere are show below. The three figures have the same radius. If the radius is 3, what is each volume?
nexus9112 [7]

Answer:

cylinder = 27π

cone =  9π

sphere = 36π

Step-by-step explanation:

volume of a cylinder = πr²h where r = radius and h = height

height of cylinder (h) = 3 and radius (r) = 3

so volume = π(3)²3

==> simplify exponent

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Volume of a cone = πr²(h/3) where r = radius and h = height

height of cone (h) = 3 and radius (r) = 3

so volume = π(3)²(3/3)

==> simplify exponent

volume = π9(3/3)

==> divide 3 by 3

volume = π9(1)

==> multiply 9 and 1

volume of cone = 9π

volume of a sphere = 4/3πr³ where r = radius

radius = 3

so volume = 4/3π(3)³

==> simplify exponent

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3 0
2 years ago
-2 x 3/7<br> please help me!
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Step-by-step explanation:

-2 x 3/7 = (-2 x 3) /7

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Answer:

Step-by-step explanation:

Id QS bisects angle PQR, then <PQS = <SQR and <PQS+<RQS = <PQR

The formula then becomes

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Substitute into the resulting expression above;

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Since <RQS = <PQR, hence <RQS is also 59.5°

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