MATHEMATICS COLLEGE

What is the value of x in the equation 8+4 = 2(x-1)?
5
11/2
13/2
7

Answers

Answer 1
Answer:

Answer:

x = 7

Step-by-step explanation:

I hope this helps!

Related Questions

A trough has a semicircular cross section with a radius of 9 feet. Water starts flowing into the trough in such a way that the depth of the water is increasing at a rate of 2 inches per hour. (a) Give a function w = f(t) relating the width w of the surface of the water to the time t, in hours. Make sure to specify the domain and compute the range too.(b) After how many hours will the surface of the water have width of 6 feet?(c) Give a function t = f −^1 (w) relating the time to the width of the surface of the water. Make sure to specify the domain and compute the range too.
A line with a slope of -2 passes through the point (4, 7). Write an equation for this line in point-slope form.
Assume that, on average, healthy young adult’s dream 90 minutes each night, as inferred from a number of measures, including rapid eye movement (REM) sleep. An investigator wishes to determine whether drinking coffee just before going to sleep affects the amount of dream time. After drinking a standard amount of coffee, dream time is monitored for each of 28 healthy young adults in a random sample. Results show a sample mean, X, of 88 minutes and a sample standard deviation, s, of 9 minutes. (a) Use t to test the null hypothesis at the .05 level of significance (b) If appropriate (because the null hypothesis has been rejected), construct a 95 per-cent confidence interval and interpret this interval
Cos²x + sin2x - 1 = 0, 0° ≤ x ≤ 90°, tan x =​
After school, a student jogged from school to the library. it took the student 35 minutes to get to the library, where he spent 10 minutes browsing and checking out a book. he then walked to the coffee shop, on the same street, in 15 minutes. he spent 40 minutes sitting at a table in the coffee shop and reading the book before heading home. he walked home in 25 minutes and remain there until the next morning.

John has five apples and he gives two to his friend how many apples does John have left

Answers

Answer:

3 apples

Step-by-step explanation:

Total amount of apple John has = 5 apples

Amount given out to his friend = 2 apples

Number of apples Joh have left = Total amount of apple - Amount given out

Number of apples Joh have left = 5 apples - 2 apples

Number of apples Joh have left = 3 apples

Hence John has 3 apples left

Help.........idk..........

Answers

1=Osle because its lower in C than the other city

2=-12 because its below not above

3=28 because its above not below Hope this helps

Answer:

1=Osle because its lower in C than the other city

2=-12 because its below not above

3=28 because its above not below Hope this helps

Step-by-step explanation:

Suppose that, from measurements in a microscope, you determine that a certain layer of graphene covers an area of 1.60μm2. Convert this to square meters.

Answers

Answer:

  1.60×10^-12 m^2

Step-by-step explanation:

The prefix μ stands for "micro-", which means 10^-6. So, 1 micro-meter is ...

  1 μm = 10^-6 m

A square micrometer is then ...

  (1 μm)^2 = (10^-6 m)^2 = 10^-12 m^2

1.6 of them is ...

  1.6 μm^2 = 1.6×10^-12 m^2

We have 30 miles of fencing which can be used to enclose a rectangular piece of grazing land along a straight portion of a river. No fence is required along the river. The grazing land will be subdivided into two sections by means of a fence parallel to the sides and perpendicular to the river. Write a function that expresses the total area in terms of the width x of the side of the grazing area perpendicular to the straight river.

Answers

Answer:

The area of the gazing land is \frac{30x-x^2}2square miles.

Step-by-step explanation:

Given that, 30 miles of fencing can be used to enclose a rectangular piece of grazing land along a straight piece of river.

Let the length of the rectangular piece of gazing which is along the river be y and the width of the  rectangular piece of gazing be x.

Along the river side, no fence is required.

Therefore total length of fence is = 2(x+y)-x

                                                        =2y+x

∴2y+x=30

⇒2y=30-x

\Rightarrow y=(30-x)/(2)

The area of the rectangular piece of gazing is = Length×width

                                                                              =xy

                                                                              =x.\frac{30-x}2

                                                                              =\frac{30x-x^2}2square miles.

Write an equation in point-slope from for a line that passes through the given set of points. (3,5) and (-6,-4)

Answers

y-y1=m(x-x1)

does this help or do you need help plugging in and finding slope?

A pancake recipe calls for 1 cup of flour. Derek has already used 1/4 cup of flour. How many more cups of flour does Derek need to add?

Answers

Answer:

Derek needs to add 3/4 cups of flour.

Step-by-step explanation:

If Derek has already used 1/4 cup of flour, he needs 3 more cups of flour to get to 1 full cup of flour.

Answer:

Step-by-step explanation:A batch of cookies requires 2 1/4 cup of flour and 1 egg. You have in your kitchen 8 cups of flour and a half dozen eggs. a) How many batches of cookies
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