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
nydimaria [60]
3 years ago
10

Sophia has been trying to budget her money. She just opened a bank account and deposited

Mathematics
1 answer:
Karolina [17]3 years ago
4 0

Answer:

400 - 120 - 220 -175 -60 +50 = -125

Step-by-step explanation:

You might be interested in
PLEASE NEED HELP ASAP
Gre4nikov [31]

Answer:

reflect over the y axis, move two units to the left and 8 units down

4 0
3 years ago
Write the original equation of -18x-15= -87
Sunny_sXe [5.5K]

Answer:

x=4

Step-by-step explanation:

-18 x 4 x -15 = -87

8 0
3 years ago
Read 2 more answers
Soling two step inequalities<br> d=5v+m, solve for v
Paladinen [302]
Not an inequality but d-m=5v. (d-m)/5=v. Basically just isolate the variable
4 0
3 years ago
Which functions are symmetric with respect to the y-axis? Check all that apply.
lawyer [7]
F)x) is shaped like a V with the vertex at the origin so its is one of the choices.

B is also one because its |x|  moved up 3 unuts
So is D.

8 0
3 years ago
A country is considering raising the speed limit on a road because they claim that the mean speed of vehicles is greater than 30
kondaur [170]

Answer:

We conclude that speed is greater than 30 miles per hour.

Step-by-step explanation:

We are given the following in the question:  

Population mean, μ =  30 miles per hour

Sample mean, \bar{x} = 35 miles per hour

Sample size, n = 15

Alpha, α = 0.01

Sample standard deviation, s = 4.7 miles per hour

First, we design the null and the alternate hypothesis

H_{0}: \mu = 30\text{ miles per hour}\\H_A: \mu > 30\text{ miles per hour}

We use one-tailed(right) t test to perform this hypothesis.

Formula:

t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{s}{\sqrt{n}} }

Putting all the values, we have

t_{stat} = \displaystyle\frac{35 - 30}{\frac{4.7}{\sqrt{15}} } = 4.120

Now, t_{critical} \text{ at 0.01 level of significance, 14 degree of freedom } = 2.624

Since,                  

t_{stat} > t_{critical}

We fail to accept the null hypothesis and reject it. We accept the alternate hypothesis and conclude that speed is greater than 30 miles per hour.

We calculate the p-value.

P-value = 0.00052

Since p value is lower than the significance level, we reject the null hypothesis and accept the alternate hypothesis. We conclude that speed is greater than 30 miles per hour.

6 0
3 years ago
Other questions:
  • What is 683.986 <br> rounded to the nearest hundredth
    10·2 answers
  • What is the slope for the equation y=7
    6·2 answers
  • The students in Darnel's grade voted to select a guest speaker. 20 students voted for a famous athlete. If there are 100 student
    10·1 answer
  • PLEASE SOLVE IT STEP BY STEP
    7·1 answer
  • What is 7,464,000.55 rounded to the nearest hundred thousand?
    14·2 answers
  • What is the sum of the first five terms of a geometric series with a1 = 20 and r = 1/4?
    12·1 answer
  • 10+x=5(1/5x+2) Equations with infinite and no solution
    8·1 answer
  • What does this equation mean?
    9·2 answers
  • HELP!!!! MATH! screenshot below
    9·2 answers
  • The average salary for a certain profession is $87,500. assume that the standard deviation of such salaries is $26,000. Consider
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!