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3 years ago

What is the answer please 2(4 + 2z) =

Mathematics

2 answers:

vladimir2022 [97]3 years ago

8 0

Answer:

2(4 + 2z) = 8 + 4z

2(4 + 2z) = 0

z = -2

Step-by-step explanation:

How to solve:

2(4 + 2z)

Distribute:

2(4 + 2z)

2(4) + 2(2z)

Multiply:

2(4) + 2(2z)

8 + 4z

8 + 4z is the simplified expression.

How to solve:

2(4 + 2z) = 0

Distribute:

2(4 + 2z) = 0

2(4) + 2(2z) = 0

Multiply:

2(4) + 2(2z) = 0

8 + 4z = 0

Subtract 8 on both sides:

8 + 4z = 0

-8 -8

4z = -8

Divide by 4 on both sides:

4z = -8

/4 /4

z = -2

z = -2 is the answer if 0 is on the other side of the equal sign

Alika [10]3 years ago

4 0

Answer: It would be 8+4z because you can't add a variable.

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3 years ago

The average weight of a 12 year old boy in the US is 45 kg. If there are 2.2046 pounds in a kg, what is the average weight in po

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Answer:

X=99

Step-by-step explanation:

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3 years ago

How many milliliters are in a liter?

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5 0

4 years ago

5470

nadya68 [22]

Answer: 1144

Step-by-step explanation:

Given: Machine A makes 7 parts every 10 minutes.

i.e. it makes $\dfrac{7}{10}$ parts in 1 minute.

Machine B makes 16 parts every 15 minutes.

i.e. it makes $\dfrac{16}{15}$ parts in 1 minute.

On Monday,

machine A makes parts for 12 hours(720 minutes). [1 hour = 60 minutes, 12 hours = 12 x 6 = 720 minutes]

i.e. Total parts made = $\dfrac{7}{10}\times720$

i.e. Total parts made = 504

machine B makes parts for 10 hours(=60x 10=600 minutes)

i.e. Total parts made = $\dfrac{16}{15}\times600$

i.e. Total parts made = 640

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Hence, the total number of parts made by the two machines on Monday=1144.

7 0

3 years ago

The 10th term of an arithmetic series is 34, and the sum of the first 20 terms is 710. Determine the 25th term.

Vilka [71]

S(10) = a + (n-1)d
34 = a + 9d ---- Eqn 1
Sum(20) = n/2(2a +(n-1)d)
710 = 20/2(2a + 19d) ----- Eqn 2
Solve these two equations and find the value of a and d and put the values in the first eqn (a + (n-1)d) to find the 25th term
*n = the term
*a = the starting number
*d = the difference in the series for each number

4 0

3 years ago