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
e-lub [12.9K]
3 years ago
9

Explain the steps in solving 2.14 x - 12.18 = -5.76, and write the solution to the equation.

Mathematics
2 answers:
Marrrta [24]3 years ago
7 0
Add 12.18 to both sides so you have 2.14x= 6.52, the you divide both sides by 2.14 so the answer is 6.52/2.14 which is 3.05 rounded
marta [7]3 years ago
4 0
I hope this helps you 2,14x= -5,76+12,18 2,14x=6,42 x=6,42/2,14 x=3
You might be interested in
A theory predicts that the mean age of stars within a particular type of star cluster is 3.3 billion years, with a standard devi
Luden [163]

Answer:

Null hypothesis:\mu \leq 3.3  

Alternative hypothesis:\mu > 3.3  

z=\frac{3.4-3.3}{\frac{0.4}{\sqrt{50}}}=1.768  

Since is a one right tailed test the p value would be:  

p_v =P(z>1.768)=0.039  

Step-by-step explanation:

Data given and notation

\bar X=3.4 represent the sample mean  

\sigma=0.4 represent the population deviation for the sample

n=50 sample size  

\mu_o =3.3 represent the value that we want to test  

\alpha represent the significance level for the hypothesis test.  

t would represent the statistic (variable of interest)  

p_v represent the p value for the test (variable of interest)  

State the null and alternative hypotheses to be tested  

We need to conduct a hypothesis in order to determine if the mean is higher than 3.3, the system of hypothesis would be:  

Null hypothesis:\mu \leq 3.3  

Alternative hypothesis:\mu > 3.3  

Compute the test statistic  

We know the population deviation, so for this case is better apply a z test to compare the actual mean to the reference value, and the statistic is given by:  

z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}} (1)  

z-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".  

We can replace in formula (1) the info given like this:  

z=\frac{3.4-3.3}{\frac{0.4}{\sqrt{50}}}=1.768  

P value

Since is a one right tailed test the p value would be:  

p_v =P(z>1.768)=0.039  

6 0
2 years ago
Need answer asap!!! worth ten points!!! please help!!
MArishka [77]

Answer:

x=17 <A= 114

I think this is the answer

Step-by-step explanation:

3 0
3 years ago
6w-y=2z, Solve for the value of w
Lerok [7]
6w-y=2z 6w=2z+y w=(2z+y):6 w=(z:3)+(y:6)
7 0
3 years ago
Read 2 more answers
One side of a rectangle is 20 cm larger than the other side. If you make the smaller side two times larger and the larger side t
grandymaker [24]
Let L be the length
Let w be the width
Let p be the perimeter
L+w+L+w=p
L=w+20
3L+2w+3L+2w=240
Sub the first equation in for L in the second equation and solve for w
3(w+20)+2w+3(w+20)+2w=240
3w+60+2w+3w+60+2w=240
10w+120=240
10w=240-120
10w=120
W=120/10
W=12
Sub w into the first equation and solve for L
L=w+20
L=12+20
L=32
Hope this helps!
3 0
3 years ago
A straight waterslide is 176 feet above ground and has an angle of depression of 43".
inessss [21]

Answer:

how long is the silde ti the nearest foot?

129

7 0
3 years ago
Other questions:
  • Jamal has $35 to spend at the mall. If pairs of shorts are $9.99, how many can he buy?
    11·2 answers
  • Please help,
    14·1 answer
  • A flagpole is 10 feet tall. Its shadow is 12 feet long. How far is it from the top of the flagpole to the end of its shadow
    7·1 answer
  • Which of the binomial below is a factor of this trinomial 4x^3-20x^2+24x
    5·2 answers
  • David sold a bicycle at a profit of 10% had he sold it for rupees 150 more, the profit would have been 15%. find the cost price
    5·1 answer
  • What is the function with a rate of change of 3/2 whose graph passes through the point (4, 10.5)?
    11·1 answer
  • PLEASE HELP FOR MAJOR GRADE TEST
    6·2 answers
  • Ava, Kate, and Jin bring all the food to a picnic. Ava brings 34, Kate brings 16, and Jin brings 112. Enter a numerical expressi
    13·2 answers
  • Toni decided to build a rectangular concrete patio 6 feet wide all around her pool.
    9·1 answer
  • Select the correct answer.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!