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
Sati [7]
3 years ago
10

Which methods correctly solve for the variable x in the equation 7 - x =18?​

Mathematics
1 answer:
ollegr [7]3 years ago
7 0
The first and seconds answer would be correct, the other answers do not solve for x explicitly (by itself) or they solve for x incorrectly
You might be interested in
Please help #22 please sos
iragen [17]
1/5( 5/2 x 4/7 -11/7) + 3/28

Multiply the terms (5/2 x 4/7) in bracket then subtract it from 11/14. Result will be 10/7.

Then multiply 1/5 with 10/7. The result will be 2/7.

2/7 + 3/28 = 11/28

T
4 0
3 years ago
Read 2 more answers
An unconfined compression test was performed to determine the average strength of concrete cylinders (in psi). It is believed th
Ronch [10]

Answer:

Explained below.

Step-by-step explanation:

(1)

The confidence level is, 91%.

Compute the value of α as follows:

\text{Confidence level}\% =(100-\alpha \%)\\\\91% = 100-\alpha \%\\\\\alpha \%=100-91\%\\\\\alpha \%=9\%\\\\\alpha =0.09

(2)

As the population standard deviation is provided, i.e. <em>σ</em> = 256 psi, the <em>z</em> value would be appropriate.

The <em>z</em> value for α = 0.09 is,

<em>z</em> = 1.69

(3)

Compute the 91% confidence interval as follows:

CI=\bar x\pm z_{\alpha/2}\cdot\frac{\sigma}{\sqrt{n}}

     =3000\pm 1.69\cdot\frac{256}{\sqrt{70}}\\\\=3000\pm 51.71\\\\=(2942.29, 3057.71)

(4)

The 91% confidence interval for population mean implies that there is a 0.91 probability that the true value of the mean is included in the interval, (2942.29, 3057.71) psi.

8 0
3 years ago
I need help on question 7
NNADVOKAT [17]
Try 30 % i think that is correct
7 0
3 years ago
Read 2 more answers
What is this for 2nd grade math. 247+?=673
icang [17]

Answer:

426

Step-by-step explanation:

Subtract 247 from 673 to get 426

7 0
3 years ago
Someone please help fast will mark as brainelist
Whitepunk [10]

Answer:

The founding fathers would have welcomed the immigrants coming from worn torn countries with open arms.  As seen in the quotations, the founding fathers say "Give me your tired, your poor"... indicating that they want those immigrants to come to America.  They want people who are not fortunate and who are struggling to survive to come to America because America is open to all races and all those types of people.  The founding fathers also say "Send these, homeless, tempest-tossed to me, I lift my lamp beside the golden door!".  Tempests, are storms, and people who are "tempest-tossed" are not in good condition.  The founding fathers want people who are not in very stable conditions, and those who are "homeless" to come to the land of opportunity.  America will open its "golden door" to those who are suffering.

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • find the mean, median, and mode of the data set. round to the nearest tenth. 7,7,14,15,4,1,7,2,15,9,5
    8·2 answers
  • John has 9 different flags that he wants to hang on the wall. How many different ways can the flags be arranged in a row?
    8·2 answers
  • If 3x+20=2y and x+5=y show that (2,7) is a solution solve by substitution. PLEASE ANSWER ME
    7·2 answers
  • Unit rate of 72 ounces for 12 servings
    14·2 answers
  • What is the slope of the line shown above?​
    6·2 answers
  • The capacities of four barrels are 75 L , 63 L , 95 L , and 46 L . Plot the values on the vertical number line.
    10·1 answer
  • 100 POINTS FOR THE CORRECT ANSWER
    5·1 answer
  • Gabriel purchases a rug priced at $475. With sales tax, the total comes out to $513. What is the sales tax percentage?
    12·2 answers
  • What is the value of the expression shown below? Plssssss helppppp
    11·1 answer
  • Oliver wants to buy apples and blueberries to make a fruit tart. Apples cost $3.50 per pound and blueberries cost $3.25 per poun
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!