3 years ago

If x = 3z and z=2y, then x=?

Mathematics

1 answer:

kykrilka [37]3 years ago

5 0

Answer:

x = 6y

Step-by-step explanation:

x = 3z and z=2y

Substitute the second equation into the first

x = 3 (2y)

x = 6y

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Zigmanuir [339]

Answer:

7 inches

Step-by-step explanation:

First you have to find the average height of each class.

4th Grade:

56, 47, 54, 51, 53, 58, 48, 54, 46, 53

Then you have add it all up and divide it by how many students there are.

56 + 47 + 54 + 51 + 53 + 58 + 48 + 54 + 46 + 53 = 520

520 ➗10= 52

Same process for the 7th Grade.

You end up getting 52 and 59. You then Subtract it to get the answer to the question.

52 - 59= 7 inches

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3 years ago

PLEASEEEE HELPPP Angle A and angle B are two angles that are complementary. We know angle A measures (x+2)° and Angle B measures

saul85 [17]

Answer:

Step-by-step explanation:

x + 2 + 57 = 90

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4 years ago

Read 2 more answers

Write the exponential equation for this scenario. Mike buys a car for $45,000.00. The cars value depreciates (loses value) at a

gladu [14]

Answer:

$A=45000(0.82)^t$

Step-by-step explanation:

Given data

P= 45,000

rate= 18%

Recall the expression for the compound interest

$A=P(1+r)^t$

Since we are talking of depreciation

$A=P(1-r)^t$

Substitute

$A=45000(1-0.18)^t\\\\A=45000(0.82)^t$

Hence the exponential function is

$A=45000(0.82)^t$

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3 years ago

A line segment has endpoints j (2,4) and L (6,8). The point K is the midpoint of JL. What is an equation of a line perpendicular

algol [13]

C.Y=x+ 2 is the answer to this question

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3 years ago

Did I do these two correctly?

natka813 [3]

Yes you did the equation on this page correctly.

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3 years ago