Which one?? I’m trying to get a good grade-

Answer:

x = 1.12

Step-by-step explanation:

1.2 + 7 x 1.12 = 9.04

May I have brainliest please? :)

Answer:

x=9/8

Step-by-step explanation:

1. Combine like terms.

x+7x=9 ---->   8x=9

2. Divide both sides of the equation by the same term

8x=9 -----> 8x/8 = 9/8

3. Simplify

  x = 9/8   or 1.125

Answer:

7.99

Step-by-step explanation:

x2 = x^2 I am assuming.

So,

x^2 + 3x = (1.7)^2 + 3(1.7) = 2.89 + 5.1 = 7.99

Answer:

x^2+3x=(1.7)^2+3(1.7)=2.89+5.1=7.99

Answer:

The correct option is d

Step-by-step explanation:

From the question we are told that

    The sample size is  n = 64

    The mean is  [tex]\= x = 320[/tex]

    The standard deviation is [tex]\sigma = 120[/tex]

Generally the standard error of the mean is mathematically represented as  

       [tex]\sigma_x = \frac{\sigma}{ \sqrt{n} }[/tex]

=>    [tex]\sigma_x = \frac{120}{ \sqrt{64} }[/tex]

=>    [tex]\sigma_x =15[/tex]

Answer:

a = 16*3.1415/3 = 16.76

Step-by-step explanation:

a =pi*r^2

r =D/2

r = 8/2

r = 4

a = pi*4^2

a=pi16

pi = 3.1416

Answer:

27

Step-by-step explanation:

2<7

(2+7)*3 = 27

Answer:

36/9 = 72/18

Step-by-step explanation:

36 times 2 is 72

Since the number on top was multiplied by two so is the number on the bottom

9 times 2 is 18

Therefore, 36/9 = 72/18

Width : Length

2 : 3

Perimeter = 2* width + 2*length

Ratio becomes:

Width : Length

4 : 6

Total units = 4 + 6 = 10

Perimeter = 40

Answer: Width is 8 ft and Length is 12 ft.

Answer:

Step-by-step explanation:

I assume that XY is midsegment of a triangle, then MO = 2 XY

9x - 20 = 2( 3x - 4 )

9x - 20 = 6x - 8

3x = 12

x = 4

MO = 9(4) - 20 = 16 units

let p= pounds of expensive $6.50 coffe

Then 140-p = pounds of $2.00 coffee

6.5p + 2(140-p) = 4.89(140)

Multiply through the parenthesis,

combine like terms... solve for p.

Then you know how many pounds of

$6.50 coffee to use.

Subtract that from 140 to get how many

pounds of $2.00 coffee the use.

The value of A4 for the given condition if a1=6 and an=2an-1 is 48.

A1 = 6 means a(1) == 6

This is the first term of the sequence. Then you have the “rule” or the “closed form” of the sequence,

which is: an = 2an - 1 for n>1,

Should be written like this: a(n) == 2 × (an - 1) for n>1.

Now,  It says that for any n>1, you should do this:

a(2) - that is the 2nd term is:

a(2) == 2 * (an - 1).

But (an -1) means “the term before this one”, which is the first term.

So, a(2) ==2 × 6 == 12, which is the 2nd term.

The 3rd term will be: a(3) == 2 × 12 = 24.

And the 4th term will be:

a(4) == 2 × 24 = 48.

So,the sequence will be:

6 , 12, 24, 48.

Thus, If a1=6 and an=2an-1, then the value of A4 under the indicated circumstance is 48.

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Answer:

$55.30

Step-by-step explanation:

you multiply the cost of gas by howmany times he has bought gas.

Answer:

p=2(L+W)

p=304

L=40+w

p=2(40+w+w) ,40+w is the value of L

304=2(40+2w)

304/2=2(40+2w)/2 divided both side by 2

152=40+2w

152-40=2w

112=2w

112/2=2w/2

w=56

and L =40+w

40+56=96.

so L=96 and W=56.

9514 1404 393

Answer:

  6

Step-by-step explanation:

Before application of the $10 credit, Caitlin's purchase was $32 +10 = $42. Your knowledge of multiplication facts tells you that 42 = 6×7. If each CD was $7, Caitlin bought 6 of them.

_____

If you need an equation, you could use ...

  7x -10 = 32 . . . . the final value of Caitlin's purchase

  7x = 42 . . . . . . . .add 10

  x = 42/7 = 6 . . . . Caitlin bought 6 CDs.

Answer:

The 95% confidence interval for the average number of years until the first major repair is (3.1, 3.5).

Step-by-step explanation:

The (1 - α)% confidence interval for the average using the finite correction factor is:

[tex]CI=\bar x\pm z_{\alpha/2}\cdot\frac{\sigma}{\sqrt{n}}\cdot\sqrt{\frac{N-n}{N-1}}[/tex]

The information provided is:

[tex]N=1500\\n=183\\\sigma=1.47\\\bar x=3.3[/tex]

The critical value of z for 95% confidence level is,

z = 1.96

Compute the 95% confidence interval for the average number of years until the first major repair as follows:

[tex]CI=\bar x\pm z_{\alpha/2}\cdot\frac{\sigma}{\sqrt{n}}\cdot\sqrt{\frac{N-n}{N-1}}[/tex]

     [tex]=3.3\pm 1.96\times\frac{1.47}{\sqrt{183}}\times\sqrt{\frac{1500-183}{1500-1}}\\\\=3.3\pm 0.19964\\\\=(3.10036, 3.49964)\\\\\approx (3.1, 3.5)[/tex]

Thus, the 95% confidence interval for the average number of years until the first major repair is (3.1, 3.5).

Answer:

833.75

Step-by-step explanation:

Answer:833.75

Step-by-step explanation:

Answer:

The product of given binomial and trinomial is:

[tex]8x^3-34x^2-27x-9[/tex]

Step-by-step explanation:

A binomial is a polynomial with 2 terms and trinomial is a term with 3 terms.

Given

[tex](4x+3)\\and\\(2x^2-5x-3)[/tex]

Distributive property can be used to find the result.

Writing mathematically

[tex](4x+3)(2x^2-5x-3)\\= 4x(2x^2-5x-3)+3(2x^2-5x-3)\\= 8x^3-40x^2-12x+6x^2-15x-9[/tex]

Combining alike terms

[tex]= 8x^3-40x^2+6x^2-12x-15x-9\\= 8x^2-34x^2-27x-9[/tex]

Hence,

The product of given binomial and trinomial is:

[tex]8x^3-34x^2-27x-9[/tex]

Answer:

150,000, 130,000

Step-by-step explanation:

well, 4 or below go down 5 and above go up so go from there

Answer:20% OF THEM WERE SHIPPED INTERNATIONALLY IT IS THE BLUE MODEL NOT THE PINK ONE

Step-by-step explanation:

The volume between the cone and the sphere is approximately 23.55 cubic units.

We are given that;

[tex]X= sqrt(y^2 + z^2)[/tex]

[tex]x^2 + y^2 + z^2 = 16.[/tex]

Now,

To find the volume between the cone and the sphere, we can use a triple integral in spherical coordinates.

The cone corresponds to the equation [tex]$\rho = 2\cos(\phi)$[/tex], where [tex]$\rho$[/tex] is the radial distance, [tex]$\phi$[/tex]is the polar angle, and [tex]$\theta$[/tex] is the azimuthal angle. The sphere corresponds to the equation [tex]$\rho = 4$[/tex]. The limits of integration are:

[tex]$0 \leq \theta \leq 2\pi$$0 \leq \phi \leq \frac{\pi}{4}$$2\cos(\phi) \leq \rho \leq 4$[/tex]

The volume element in spherical coordinates is [tex]$\rho^2\sin(\phi)d\rho d\phi d\theta$[/tex]

Therefore, the volume is:

[tex]$V = \int_{0}^{2\pi}\int_{0}^{\frac{\pi}{4}}\int_{2\cos(\phi)}^{4}\rho^2\sin(\phi)d\rho d\phi d\theta$[/tex]

Evaluating this integral, we get:

[tex]$V = \frac{32}{3}\pi - 8\sqrt{2}\pi + 16\pi$[/tex]

Therefore, by volume of cone the answer will be 23.55 cubic units.

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Answer:

B is the answer for the question

Answer:

Use the midpoint formula M = (x1+x2/2 , y1+y2/2)

M = (1+9/2 , 6+ -10/2 ) = 5,-2

The midpoint is located at 5,-2.

Answer:(5,-2)

Step-by-step explanation:

(1+9)/2 , (6-10)/2 = (5,-2)

Answer:

−108z 5−64z 3+3z 2−24z−384/6

​

Step-by-step explanation:i just looked it up.

Step-by-step explanation:

first cirscross it come 2nˆ4X=3L4mˆ2and divide each by 2nˆ4 to make X alone and it come, X=3L4mˆ2/2nˆ4. try my best ,if i am wrong tell me.

Divide total length by cut length:

9 / 2/3

= (9 x 3)/2 = 27/2 = 13.5

He can cut 13 pieces

Answer:

A. 1

Step-by-step explanation:

First, plug 1 into g(x). This is equal to 0.

      The picture is like a table, so if the input is 1, the output is 0.

Then, plug 0 into f(x). This is equal to 1.

Answer:

1

Step-by-step explanation:

Answer:

C. -7.78

Step-by-step explanation:

If the denominators are not the same, then you have to use equivalent fractions which do have a common denominator . To do this, you need to find the least common multiple (LCM) of the two denominators. To add fractions with unlike denominators, rename the fractions with a common denominator. Then add and simplify.

Step 1: Keep the denominator the same. Step 2: Add or subtract the numerators. ...

Step 1: Find the Lowest Common Multiple (LCM) between the denominators. ...

Step 1: Convert all mixed numbers into improper fractions. ...

In this second method, we will break the mixed number into wholes and parts. ...

Thus, is equivalent to.

Fractions

Fractions can be thought of as another way of seeing division. If you have one whole pizza and two people want to share it equally, they will divide it into two halves:

The bottom number of a fraction is the denominator. It tells how many parts a whole has been divided into. In this case our pizza is divided into two parts.

Proper Fractions, Improper Fractions, and Mixed Numbers

A proper fraction is one in which the numerator is smaller than the denominator.

An improper fraction is one in which the numerator is larger than the denominator. If the numerator is larger than the denominator, the fraction equals a number that is greater than one.  

Lowest Terms

Want to learn more? Take an online course in Basic Math.

Finding the GCF (Greatest Common Factor)

The greatest common factor is the largest factor that divides two numbers. We find this by figuring out what prime numbers are multiplied together to make up each number. A prime number is a number that can only be divided by itself or by one. Examples of prime numbers are 1, 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, etc. We want to focus on those that are less than ten in most cases.  

Finding the LCD (Lowest Common Denominator)

Adding and Subtracting Fractions

To add or subtract two fractions, the two fractions must have the same denominator. Therefore, you will have to find the lowest common denominator and change each fraction to an equivalent fraction. Then you add or subtract the numerators as indicated and put the resultant number over the denominator and reduce the fraction to lowest terms.

Answer:

B

Step-by-step explanation:

N/A