1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Karolina [17]
3 years ago
5

(50 points!) Whats 7x + 5z(x-z) ÷ 9y, when x = 5, z = 8, and y = 23. Whoever Gives me an answer AND REALLY GOOD EXPLANATION FIRS

T gets a free brainliest!
Mathematics
2 answers:
Oliga [24]3 years ago
8 0

Answer: First we will substitute the numbers given for the variables.

Then we will use order of operations to simplify.

7x + 5z(x - z) ÷ 9y would be equal to

7(5) + 5(8) * (5 - 8) ÷ 9(23)

Simplify:

35 + 40(-3) ÷ 207

Use order of operations to multiply 40 and -3; the equation now looks like:

35 + (-120) ÷ 207

Use order of operations to divide -120 and 207; the equation now looks like:

35 + (-0.6)

Add 35 and -0.6:

34.4

The solution to this equation is 34.4.

Margaret [11]3 years ago
3 0

Answer:

34.4

Step-by-step explanation:

7x + 5z(x - z) ÷ 9y

7(5) + 5(8) * (5 - 8) ÷ 9(23)

35 + 40(-3) ÷ 207

35 + (-120) ÷ 207

35 + (-0.6)

Add 35 and -0.6:

34.4

Hope this helps!

You might be interested in
The histogram displays how many students are in each classroom during homeroom. What percentage of classrooms have 25 students o
Lelechka [254]

Answer:

its 40% but since it's not there it could be 45%

Step-by-step explanation:

hope this helps

3 0
3 years ago
Read 2 more answers
A real estate agent needs to estimate the average value of a residential property of a given size in a certain area. The real es
alexira [117]

Answer:

Follows are the solution to this question:

Step-by-step explanation:

95 \% \ the confidence level for z:

\alpha = 1 - 95 \% \\\\

   = 1 - 0.95 \\\\        = 0.05

\to \frac{\alpha}{2} = \frac{0.05}{2} = 0.025\\\\\\to Z \  \frac{\alpha}{2} = Z_{0.025} = 1.96

Calculating the Margin of error:

E =   Z\  \frac{\alpha}{2}  \times ( \frac{\sigma}{\sqrt{n}})

   = 1.96 \times ( \frac{5000}{\sqrt{\sqrt{100}}})\\\\= 980

The population means estimate a 95 % confidence interval is:

\to \bar{x} \frac{+}{-} E\\\\ = \$ 90000 \frac{+}{-} 980

5 0
3 years ago
Margie threw a ball upwards while standing on a platform 65ft above the ground. The trajectory follows the​ equation:h(t)=-1.5t^
EastWind [94]

Answer:

  • 14 seconds

Step-by-step explanation:

Given equation is representing the graph of parabola which opens down and its pick is its vertex

<u>The vertex is calculated by vertex formula:</u>

  • x = -b/2a for the equation y = ax² + bx + c

<u>In our case t is the vertex and its value is:</u>

  • t = -42/(-1.5*2) = 42/3 = 14 seconds

7 0
3 years ago
Determine when domain increases
Svetllana [295]

Answer:

Step-by-step explanation:

[0,7)

because the dot is colored in you need to have the bracket

6 0
3 years ago
Explain why is 1/5 bigger than 0.15
Nitella [24]
1/5 is greater because it equals 0.2

0.2 has an imaginary 0 at the end, to make it 0.20

.20 > 0.15

Therefore, 1/5 is greater than 0.15
8 0
3 years ago
Other questions:
  • leandra has 40 coins that total 7.15 all of her coins are dimes,d, and quarters,q, which system of equations models this situati
    11·1 answer
  • What is the unit rate of 100mile/4gallons
    9·1 answer
  • Tom drank quarts of water and his sister Jane drank 1.75 quarts of water. Write the amount that Jane drank using a fraction. Who
    13·1 answer
  • I WILL MARK AS BRAINLIEST AND AWARD A LOT OF POINTS PLZ HELP!!!!!!!!!!!!Michael, Ronald, Lidia, Alexandra, and Catherine are sha
    7·2 answers
  • Asher wants to buy a set of bedroom furniture priced at $1,200 for his new apartment. He plans to pay $25 every month to pay off
    13·1 answer
  • 49<br> 42<br> 35<br> 30<br> 63<br> 6x - 6<br> Solve for x show work
    11·1 answer
  • Never mind don't need help
    15·1 answer
  • <img src="https://tex.z-dn.net/?f=%7B%28%5Cfrac%7B4%7D%7B3%7D%29%20%5E%7B-1%7D%20-%20%28%5Cfrac%7B1%7D%7B4%7D%20%29%5E%7B-1%7D%2
    7·1 answer
  • 3
    5·2 answers
  • No link or bot answer the question
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!