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Bezzdna [24]
3 years ago
8

Is the open sentence 3z = 2z + 5 true or false when z = 5?

Mathematics
2 answers:
USPshnik [31]3 years ago
7 0

Answer:

Your answer to your question is FALSE!!!!!!

satela [25.4K]3 years ago
5 0

Answer:

True

Step-by-step explanation:

  1. Plug the value of z in: 3(5) = 2(5) + 5
  2. Simplify: 15 = 10 + 5
  3. 10 + 5 = 15
  4. So, the open sentence is true.

I hope this helps!

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pls help immediately! this is due in 3 mins :/.(i’ll mark brainiest if u don’t leave a link just help me pls!)
Serhud [2]

Answer:

They help the tree reach deep into the sandy soil for nutrients and ground water.

Step-by-step explanation:

The job of a tree's roots is to collect water and nutrients.

5 0
2 years ago
There is a competition in the cinema to win free tickets. You must guess the ages of the four employees. Here are the clues: - W
jenyasd209 [6]

Answer:

Kirk is <u>28</u> years old, Brian is <u>36</u> years old, Matt is <u>18</u> years old, and the manager is <u>24</u> years old.

Step-by-step explanation:

Let k be Kirk's age.

Let b be Brian's age.

Let m be Matt's age.

Let m_{1} be the boss/manager's age.

From the information given, we can set up 4 equations:

k+b+m+m_{1}=106

k=2(m_{1}-10)

b=2m_{1}-12

m=\frac{1}{2}m_{1}+6

Rewrite the first equation, substituting k, b, and m in terms of m_{1} to get:

2(m_{1}-10)+(2m_{1}-12)+(\frac{1}{2}m_{1}+6)+m_{1}=106

Open up the parentheses using the distributive property (which is a(b-c)=ab-ac) and combine like terms to get:

5.5m_{1}-26=106

Add 26 to both sides to reach:

5.5m_{1}=132

Thus, m_{1}=24. Substitute 24 for m_{1} in the second, third, and fourth original equations to find that k=28, b=36, and m=18. Therefore, Kirk is <u>28</u> years old, Brian is <u>36</u> years old, Matt is <u>18</u> years old, and the manager is <u>24</u> years old. To check, you can add up all of the ages to get 106.

Hope this helps :)

8 0
2 years ago
Please quickly <br><br> 4(1-x)+2x=-3(x+1)
stepan [7]
X = -7 you can just look this up too
5 0
3 years ago
Read 2 more answers
Solve the equation log4(x + 20) = 3
salantis [7]

Answer:

Step-by-step explanation:

I don not understand what is for 4 here. So there are 2 cases:

Case 1: If you mean: log[4(x+20)]= 3

We know 3 = log(10^3)= log(1000)

So we have log[4(x+20)]= log(1000)

so 4(x+20)= 1000

and x+20 = 1000/4

x+20 = 250 and finally x= 250-20, x=230

The solution is 230.

Case 2; If you mean that 4 is the base of logarithm.

log_{4}(x+20)= 3

and we know that 3=log_{4}(3^{4} )= log_{4}(81)

So we have log_{4}(x+20)= log_{4}(81)

and x+20 = 81

or x= 81-20

x=61

The answer is 61.

Hope that useful for you, both cases.

5 0
3 years ago
Read 2 more answers
Louise hikes 3 miles east on a forest trail. She stops for lunch and then hikes 2 more miles east. How many miles west must she
Sergeeva-Olga [200]

Answer:

5 miles

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
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