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
podryga [215]
2 years ago
10

What is 2x-4+7x=54.5

Mathematics
1 answer:
Annette [7]2 years ago
5 0

Answer:

=6.5

Step-by-step explanation:

2−4+7=54.5

9−4=54.5

9−4+4=54.5+4

9=58.5

99=58.59

=6.5

hope i helped plz mark me brainlest

You might be interested in
Can you solve 4 + 2/3 x = -5 in fraction form?
guapka [62]

Answer:

\frac{-27}{2} = (-13)(\frac{1}{2})

Step-by-step explanation:

The given equation is 4 + 2/3 x = -5

Taking variable on one side and constants on other side, we get

-9 = (\frac{2}{3})(x)

x = (\frac{3}{2})(-9) = \frac{-27}{2} = (-13)(\frac{1}{2}) = -13.5

The number in decimal form is given by -13.5

The number in fraction form is given as \frac{-27}{2} = (-13)(\frac{1}{2})

3 0
3 years ago
A brochure claims that the average maximum height for a certain type of plant is 0.7 m. A gardener suspects that this is not acc
larisa [96]

Answer:

As Z, it is possible to reject null hypotesis. It means that the local mean height is less tha 0.7 m with a 5% level of significance.

Step-by-step explanation:

1. Relevant data:

\mu=0.70\\N=40\\\alpha=0.05\\X=0.65\\s=0.20

2. Hypotesis testing

H_{0}=\mu=0.70

H_{1} =\mu< 0.70

3. Find the rejection area

From the one tail standard normal chart, whe have Z-value for \alpha=0.05 is 1.56

Then rejection area is left 1.56 in normal curve.

4. Find the test statistic:

Z=\frac{X-\mu_{0} }{\sigma/\sqrt{n}}

Z=\frac{0.65-0.70}{0.20/\sqrt{40}}\\Z=-1.58

5. Hypotesis Testing

Z_{\alpha}=1.56\\Z=-1.58

-1.58

As Z, it is possible to reject null hypotesis. It means that the local mean height is less tha 0.7 m with a 5% level of significance.

4 0
3 years ago
4(3x-2)+6x(2-1) simplified
FrozenT [24]

Answer:

The answer is 18x - 8.

Step-by-step explanation: Trust me, an know a lot about math.

6 0
3 years ago
Read 2 more answers
A bakery wants to determine how many trays of doughnuts it should prepare each day. Demand is normal with a mean of 5 trays and
Alexeev081 [22]

Answer:

4 trays should he prepared, if the owner wants a service level of at least 95%.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 5

Standard Deviation, σ = 1

We are given that the distribution of demand score is a bell shaped distribution that is a normal distribution.

Formula:

z_{score} = \displaystyle\frac{x-\mu}{\sigma}

P(X > x) = 0.95

We have to find the value of x such that the probability is 0.95

P(X > x)  

P( X > x) = P( z > \displaystyle\frac{x - 5}{1})=0.95  

= 1 -P( z \leq \displaystyle\frac{x - 5}{1})=0.95  

=P( z \leq \displaystyle\frac{x - 5}{1})=0.05  

Calculation the value from standard normal z table, we have,  

\displaystyle\frac{x - 5}{1} = -1.645\\x = 3.355 \approx 4  

Hence,  4 trays should he prepared, if the owner wants a service level of at least 95%.

3 0
3 years ago
Jasmine is a receptionist at a doctor's office she books 86 appointments each day four out of every 24 appointments are canceled
bonufazy [111]

Answer:

3.07

Step-by-step explanation:

(86.0/(4.0+24.0))

5 0
3 years ago
Other questions:
  • Help help help help help help help
    8·2 answers
  • What is the square root of 1​
    5·2 answers
  • I need help with these questions also plz show work
    11·2 answers
  • Helppppppppppppppppppppppp
    8·1 answer
  • the entire bag is about 800 calories. one serving is 1/5 of the bag. how many calories is in one serving?
    14·1 answer
  • Explain how can you use base ten blocks to find 2.16 divided by 3
    7·2 answers
  • A tennis racket normally costs $65 . The tennis racket is on sale for 20% off . What is the sale price of the tennis racket
    7·2 answers
  • A student used the slope-intercept form to write the
    14·2 answers
  • Been working on this for too long. thank u :)
    15·1 answer
  • 5x + 2 + 3x + 5 = ?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!