solve -3+12-5(2y-7) The solution y is:

Answer:Maybe ffor the positive numbers you could use like 1,2,3,4,5,6,7,8, and 9. For the negitive number could be like -1,-2,-3,-4,-5. And zero could  repersent  the middle. Get it or no?

Step-by-step explanation:

Answer:

-5

Step-by-step explanation:

counting is like backwards in negatives so a +5 is slow and a +25 is high but in negatives its the opposite because you are missing that many

I dont really know who to explain it but I hope this helps

Question: If the subspace of all solutions of

Ax = 0

has a basis consisting of vectors and if A is a ​matrix, what is the rank of​ A.

Note: The rank of A can only be determined if the dimension of the matrix A is given, and the number of vectors is known. Here in this question, neither the dimension, nor the number of vectors is given.

Assume: The number of vectors is 3, and the dimension is 5 × 8.

Answer:

The rank of the matrix A is 5.

Step-by-step explanation:

In the standard basis of the linear transformation:

f : R^8 → R^5, x↦Ax

the matrix A is a representation.

and the dimension of kernel of A, written as dim(kerA) is 3.

By the rank-nullity theorem, rank of matrix A is equal to the subtraction of the dimension of the kernel of A from the dimension of R^8.

That is:

rank(A) = dim(R^8) - dim(kerA)

= 8 - 3

= 5

Answer:

See bolded for each part below.

Step-by-step explanation:

Attachment 1. (a) The range is 400 dollars, as her greatest balance was 400 dollars, so her domain would be 3 weeks.

( b ) Remember that B(0) models the balance over the course of 0 days. As you can see that starting mark is about half of the greatest balance on the graph, 400 dollars. Therefore you can estimate B(0) to be $200.  

(c) B(12) models the balance over the course of 12 days. It mentions that at B(12) the balance reaches $0, so in function notation that would be B(12) = 0.

(d) Segment 4 would represent that information. As you can see on the graph, the only time period with which the balance became 0 is represented by the fourth segment.

Attachment 2. (a) As you can see on the graph, Ebony reached $400 on day 4, and stayed as such throughout day 8 (modeled by line segment 2). Therefore B(5) = 400 = B(6) = B(7).

(b) We also know that B(0) = ( About ) 200, B(4) = 400. Therefore B(1) = 250, B(2) = 300, B(3) = 350. The slope changes by a rate of 50.

(c) Jade is incorrect. By looking at the graph you can see that the rate from day 8 to day 12 is greater than the rate from day 0 to day 4.

Attachment 3. (a) I would say the amounts she deposited were less than $100 per day. Remember that from day 0 to 4 the slope is about 50. The slope of the line segment that models this situation, line segment 6, has about the same slope, 50.

(b) On day 21 she had 300 dollars, as it seems that this marking is between the starting amount (200) and 400. There are 5 days between 16 and 21. On day 16 she deposited 100 dollars. From then on she apparently deposited 50 dollars,

100 + 50 * 4 = 100 + 200 = 300 ✓

I hope this helps! :)

The answer is 120 degree

Pls mark as brainliest

Answer:

Simple 1 part 120 degrees

Step-by-step explanation:

Answer:

The mean and standard deviation of the number of correct answers is 3 and 1.55 respectively.

Step-by-step explanation:

We are given that a quiz consists of 15 multiple choice questions, each with five possible answers, only one of which is correct.

Let X = the number of correct answers

The above situation can be represented through binomial distribution;

[tex]P(X = x) = \binom{n}{r}\times p^{r}\times (1-p)^{n-r}; x = 0,1,2,3,......[/tex]

where, n = number of samples (trials) taken = 15 multiple choice questions

            r = number of success

            p = probability of success which in our question is probability of

                  one correct answer out of 5, i.e; p = [tex]\frac{1}{5}[/tex] = 0.2

So, X ~ Binom(n = 15, p = 0.2)

Now, the mean of the number of correct answers is given by;

         Mean of X, E(X) = [tex]n \times p[/tex]

                                    = [tex]15 \times 0.2[/tex] = 3

And the standard deviation of the number of correct answers is given by;

       Standard deviation, S.D.(X) = [tex]\sqrt{n \times p\times (1-p)}[/tex]

                                                     = [tex]\sqrt{15 \times 0.2\times (1-0.2)}[/tex]  = 1.55

Answer:

[tex]\Large \boxed{8\frac{3}{4} }[/tex]

Step-by-step explanation:

35 ÷ 4 = 8 R3

The quotient is 8.

The remainder is 3.

The divisor is 4.

Rewrite as a mixed fraction.

[tex]\displaystyle \sf quotient \frac{remainder}{divisor}[/tex]

35 divided by 4 gives the mixed fraction 4 3/8.

We have,

35 divided by 4 = 8 R3

When we divide 35 by 4, the result is:

35 ÷ 4 = 8 with a remainder of 3.

Or, in the form of mixed fraction we can write as

Divisor x quotient / Remainder

Then, 4 3/8 is the mixed fraction.

Thus, 35 divided by 4 gives the mixed fraction 4 3/8.

Learn more about Mixed fraction here:

https://brainly.com/question/29019463

#SPJ6

Answer:

The rate of change of the function = 5

Step-by-step explanation:

From the given parameters, we have;

The number of months Janenne has belonged to the book-of-the-month-club = 12

The amount Janenne has spent on the club = 70.45

The amount she paid in the first month = Monthly fee + 10.45

Let the monthly fee = x

The total amount Janenne has spent on the club  can be given by the following formula;

10.45 + 12×x = 70.45

12×x = 70.45 - 10.45 = 60

x = 60/12 = 5

The monthly due of the book club = 5

Therefore, the rate of change of the function × 5

The function of the amount spent on the club = Y = t×x

Where;

x = The rate of change of the function

t = The time in months

The rate of change of the function = 5.

Answer:nnn

Step-by-step explanation:

jjj

Answer:

See below.

Step-by-step explanation:

1) What percent of 29 is 3?

3/29 * 100% = 10.3

2) What percent of 33.5 is 21?

21/33.5 * 100% = 62.7%

3) What percent of 55 is 34?

34/55 * 100% = 61.8%

4) 41% of 78 is what?

41% * 78 = 0.41 * 78 = 32.0

5) 28% of 63 is what?

28% * 63 = 0.28 * 63 = 17.6

6) 58% of what is 63.4?

58% * x = 63.4

0.58x = 63.4

x = 63.4/0.58 = 109.3

Answer:

3

Step-by-step explanation:

Cube volume formular = Side^3

27 = x^3

[tex]\sqrt[3]{27} = 3\\[/tex]

Check = 3*3*3 = 27

3 is the answer

Step-by-step explanation:

green: 6/4

red: 7/4

this is all i know

━━━━━━━☆☆━━━━━━━

▹ Answer

49

▹ Step-by-Step Explanation

Substitute:

13 + 6(6)

Solve:

6 * 6 = 36

13 + 36 = 49

Hope this helps!

CloutAnswers ❁

━━━━━━━☆☆━━━━━━━

Answer: 49

Step-by-step explanation: To evaluate 13 + 6y if y = 6,

we start by substituting 6 in for y.

So we have 13 + 6(6).

Remember to use parentheses when

substituting numbers in for variables.

Now, we use the order of operations to simplify from here.

Since multiplication comes before addition, our next step is

to multiply 6(6) to get 36, and we have 13 + 36, which is 49.

Answer:

answer in attachment

Step-by-step explanation:

Answer:

Read Exp:

Step-by-step explanation:

Exponents are like a simpler way to multiply something by itself a certain amount of times.

So like if you were to see 7^4 on a test or assignment you would solve it like this:

- 7x7x7x7.

It just means 7 times itself 4 times. NOT 7 times 4.  

Answer:

The answer is

Step-by-step explanation:

x² + 12x - 64

To factorize the expression write 12x as a difference

That's

x² + 16x - 4x - 64

Factor out x from the expression

That's

x( x + 16) - 4x - 64

Factor out - 4 from the expression

That's

x( x + 16) - 4 ( x + 16)

Factor out (x + 16) from the expression

We have the final answer as

Hope this helps you

Answer:

-43

Step-b-y-step explanation:

f(x)= -x^2+7x-13  so

f(-3)= - (-3)^2 + 7(-3) - 13

= -9 - 21 - 13

= -43.

Answer:

x=3

Step-by-step explanation:

The line of reflection would be at x=3. It’s like a mirror.  The reflection is backward, but the same distance from the line of reflection, so the line needs to be halfway between the two shapes.  Since C is at 4 and C’ is at 2, the line of reflection has to be at 3.

While this is with theta instead of A it still is the same thing. I hope this helps

Answer:  see proof below

Step-by-step explanation:

Use the following Double Angle Identity:

cos 2A = 2 cos²A - 1

Proof RHS → LHS

Given:                            [tex]\sqrt{2+\sqrt{2+\sqrt{2+2cos8A}}}[/tex]

Factor:                           [tex]\sqrt{2+\sqrt{2+\sqrt{2(1+cos8A)}}}[/tex]

Let α = 4A:                      [tex]\sqrt{2+\sqrt{2+\sqrt{2(1+cos2\alpha)}}}[/tex]

Double Angle Identity:   [tex]\sqrt{2+\sqrt{2+\sqrt{2(1+2cos^2\alpha-1)}}}[/tex]

Simplify:                            [tex]\sqrt{2+\sqrt{2+\sqrt{2(2cos^2\alpha)}}}[/tex]

                                          [tex]\sqrt{2+\sqrt{2+2cos\alpha}}}[/tex]

Substitute (α = 4A):           [tex]\sqrt{2+\sqrt{2+2cos4A}}}[/tex]

Factor:                               [tex]\sqrt{2+\sqrt{2(1+cos4A)}}}[/tex]

Let β = 2A                          [tex]\sqrt{2+\sqrt{2(1+cos2\beta)}}}[/tex]

Double Angle Identity:     [tex]\sqrt{2+\sqrt{2(1+2cos^2\beta-1)}}}[/tex]

Simplify:                             [tex]\sqrt{2+\sqrt{2(2cos^2\beta)}}}[/tex]

                                          [tex]\sqrt{2+2cos\beta}[/tex]

Substitute (β = 2A):            [tex]\sqrt{2+2cos2\alpha}[/tex]

Factor:                                 [tex]\sqrt{2(1+cos2\alpha)}[/tex]

Double Angle Identity:       [tex]\sqrt{2(1+2cos^2\alpha-1)}[/tex]

Simplify:                               [tex]\sqrt{2(2cos^2A)}[/tex]

                                             2 cos A

2cos A =  2cos A   [tex]\checkmark[/tex]

Answer:

48 = 12y

Step-by-step explanation:

First, we simplify

6 * 7 = 42

6 * 3y = 18y

6 * y = 6y

6 * 1 = 6

Then, rewrite the expression

42 - 18y + 6y + 6

Now, rearrange the expression

42 + 6 - 18y + 6y

Then, simplify

48 - 12y

Hope this helps!

Answer:

48 - 12 y

Step-by-step explanation:

6 (7 - 3 y) + 6 (y + 1)

Use distributive property to get rid of the parentheses:

42 - 18 y + 6 y + 6

now combine like terms:

(42 + 6 ) + (- 18 y + 6 y) = 48 - 12 y

Answer:

20% of 45 is 9. sale price- 9$

Step-by-step explanation:

20% of 45

20/100 = 0.20 (0.20) (45) = 9

Answer:

37.50

Step-by-step explanation:

45 ÷ 80% = 37.50

÷80% because original price reduced TO 80%.

Answer:

see explanation

Step-by-step explanation:

The equation of a circle in standard form is

(x - h)² + (y - k)² = r²

where (h, k) are the coordinates of the centre and r is the radius

(x - 6)² + (y + 1)² = 40 ← is the equation of a circle in standard form

centre = (6, - 1) and r = [tex]\sqrt{40}[/tex] = 2[tex]\sqrt{10}[/tex]

Answer:

2.5

Step-by-step explanation:

Since 4/2 = 2 and 5/2 is 1/2 more than 4/2, then 5/2 is equal to 2 1/2 which can be rewritten as 2.5

Answer:

5/2 = 2,5

5  to divide 2 = 2,5

Step-by-step explanation:

Answer: 484

===============================================

Work Shown:

First let's compute f(2). We replace every x with 2 and then use PEMDAS to simplify

f(x) = -x^4 + 5x - 4x^2

f(2) = -(2)^4 + 5(2) - 4(2)^2

f(2) = -16 + 5(2) - 4(4)

f(2) = -16 + 10 - 16

f(2) = -6 - 16

f(2) = -22

Then we square this result to find the value of [tex][ f(2) ]^2[/tex]

[tex]f(2) = -22\\\\\left[ f(2) \right]^2 = [ -22 ]^2\\\\\left[ f(2) \right]^2 = 484[/tex]

Answer:

384 sq mm

Step-by-step explanation:

Remember that the diagonals of a rhombus are perpendicular bisectors of each other.

So, one side of the rhombus, half the longer diag and half the shorter diag form the 3 sides of a right triangle

with the rhombus side being the hypotenuse.

In this case, let the shorter diagnoal be x mm. In the right triangle,

Hypotenuse = 20

One side = 32/2 = 16

Other side = x/2

Applying Pythagoras principle,

[ check the file attatched ]  (taking only the positive square root)

So the shorter diagonal = 12*2 = 24 mm

Area of the rhombus is given by the formula (1/2)*d1*d2 where d1, d2 are the 2 diagonals.

Here, the area = (1/2)*32*24 = 32*12 = 384 sq mm

Answer:

x = -8

Step-by-step explanation:

-10x-5 = -8x + 11

-10x + 8x = 11 + 5

-2x = 16

x = 16/-2

x = -8

Step-by-step explanation:

To find the factors of -20 (or 20), we ask ourselves: what numbers multiply each other to get -20?

We have:

-20 * 1

-10 * 2

-5 * 4

5* -4

10 * -2

20 * -1

All of these pairs are factors of -20. Choose two that you want to use! Hope this helps!

Answer:

2 and -10 or 4 and -5

Step-by-step explanation:

An integer is any whole number, positive or negative (so not fractions, decimals.... just numbers like -1, -2, 10, etc.).

Hence, there is not only one answer to your question...

It could be 2 and -10, 4 and -5... just not any decimals or fractions!

God bless and stay safe! I hope this helped.

Answer:

2(7n+2m)

2(7n+(5m-3m))

answer: 2(7n+2m)

Answer:

2m + 4 = 28

Step-by-step explanation:

Zach = 28 years old

2 times Maya's (m) age

2*m

4 years older plus twice Maya's age.

2 * m + 4 = 28

2m + 4 = 28

Hope it helps : )