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3 years ago

Solve the following system of equations for z and for y :

Mathematics

1 answer:

azamat3 years ago

4 0

Answer:

Value of z = 7

Value of y = 30

Step-by-step explanation:

We are given the following equations in the question:

$y = 9 + 3z\\y = 65 -5z$

We have to solve the given equation for y and z.

Equating the two equations we get,

$y = 9 + 3z\\y = 65 -5z\\9 + 3z = 65-5z\\3z + 5z = 65-9\\8z = 56\\\\z = 7\\y = 9+3(7) = 30$

Value of z = 7

Value of y = 30

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Vlada [557]

Answer:

b = 3.5 cm

Step-by-step explanation:

Given that,

The area of a rectangle, A = 14. sq cm

The length of one side, l = 4 cm

We need to find the length of another side. The formula for the area of a rectangle is given by :

A = lb

So,

$14=4b\\\\b=\dfrac{14}{4}\\\\b=3.5\ cm$

So, the length of the other side is equal to 3.5 cm.

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2 years ago

Simplify x + (7+14x)

Brilliant_brown [7]

Answer:

15x + 7

Step-by-step explanation:

x + (7 + 14x)

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15x + 7

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2 years ago

What is the percent change from $24 to $30

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Answer:

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Step-by-step explanation:

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2 years ago

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Yuki888 [10]

462/14 = 33 miles on each gallon

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3 years ago

Can anyone help me out in my homework. I would love to talk about these problems

katen-ka-za [31]

Step-by-step explanation:

(b) If $F_G = m_1g,$ then

$m_1g = G\dfrac{m_1m_2}{r^2}$

Note that $m_1$ cancel out so we get

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Solving for $m_2,$ we get

$m_2 = \dfrac{gr^2}{G}$

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2 years ago