Alexis wrote 28 - 8 = 20. Then she
wrote 28 -8 + 9 = 20 – 9. Are her
equations balanced? Explain.

Answer:

yes , keiko is correct.

sin^(-1)x = -sin^1

Answer:

Keiko is wrong

Step-by-step explanation:

Keiko is incorrect

When n is positive, 1^n will always be 1

but........ (-1)^n will not always be -1

This is because there are parenthesis around -1

So n is even, then it will be 1 not -1

For example, n = 4

You will do -1 * -1 * -1 * -1 which is 1 not -1

but if n = 3

You will do -1 * -1 * -1 which is -1

Therefore, the second statement is incorrect resulting in Keiko being wrong

Answer:

The height of the area is (x - 3) ft.

Step-by-step explanation:

You can do this a few ways.  You could use long division to divide the area by the width, or you could just factor the area, which is guaranteed to have the width as a factor, leaving you with the height.

Let's go with factoring, as that's probably what this question is intended as:

[tex]= \frac{2x^2 - 9x + 9}{2x - 3} \\\\= \frac{2x^2 - 6x - 3x + 9}{2x - 3} \\\\= \frac{2x(x - 3) - 3(x - 3)}{2x - 3} \\\\= \frac{(2x - 3)(x - 3)}{2x - 3} \\\\= x - 3[/tex]

Step-by-step explanation:

x2-7x-34-10=0

x2-7x-44=0

(x-11)(x+4)=0

x= 11 or x= -4

Answer:

x = 11 or x = -4

Step-by-step explanation:

x^2 - 7x - 44 = 0

-11 + 4 = -7, -11 × 4 = -44

(x -11)(x + 4) = 0 or (x + 4)(x - 11) = 0 Both are same way: O

x = 11 or x = -4 would be the answer : )

It is asking for a convex nonagon, not a convex polygon. So in this case we are looking for a shape with 9 straight lines and 9 angles. Which means we can cross A out.

Now we need to look at which nonagon is a convex nonagon which means that we are looking for the shape having only interior angles measuring less than 180°. So this means that B and D can be crossed out.

Thus, the answer is C.

P.S. If you find my answer helpful, please mark me brainiest!

Answer:

3/5 x 5/8 is less 5/8

Step-by-step explanation:

3/5 x 5/8 = 15/40

Simply

15/40 = 3/8

•

5/8 > 3/8

Answer:

[tex]Rx=1(p) = (4,7)[/tex]

Step-by-step explanation:

he given point P has coordinates, [tex](-2,7)[/tex]                                                           We want to find the image of this point, after a reflection in the line [tex]x=1[/tex]

Answer:

b) [tex]f^-1(x)[/tex]= ∛(4x-24)

c)2

Step-by-step explanation:

these ones are inverse functions

change the f(x) for y and make x the subject

y= x³/4 +6

(y-6)x 4 = x³

∛(4y-24)= x

then put x back were y is

[tex]f^-1(x)[/tex]= ∛(4x-24)

and to do c just put in 8 where x is

∛(4(8)-24)= 2

Answer:

1-24

2-15 books for 9 pupils

3-Worker 1

3x = 3(1,750)

    = 5,250

-------------------

Worker 2

4x = 4(1,750)

    = 7,000

4-368

5-22 days and a half (22.5 days)

Step-by-step explanation:

hope this helps if u need the calclations tell me!

Answer:

£8

Step-by-step explanation:

A

Sam:Adam

2:5

3=£12

12÷3=4

1=4

4×2=8

sam=£8

Answer:

11/25

Step-by-step explanation:

male population/Total population

Answer:

11 : 390,625

I think

ㅤㅤㅤㅤㅤ

Answer:

n = 13

Step-by-step explanation:

n + 5 = 18

Answer:

13

Step-by-step explanation:

To find the number, subtract 5 from 18:

18 - 5

= 13

So, the number is 13.

Answer: B

Step-by-step explanation:

Answer:

all of them are linear

Step-by-step explanation:

Use the function y=ax, plug x and y into it.

I have just tried it and all of them are linear function.

It's the first one. y can equal x as long as y doesn't equal x multiple times. We also know the last two are wrong because they're saying the same thing. A linear function is a straight line.

Answer:

24

Step-by-step explanation:

Answer:

(2) 68°

Step-by-step explanation:

Since the required m angle B = 68°

Answer:

x = -3

Step-by-step explanation:

y = x + 8 and x + y = 2

Using substitution, we know that y = x + 8, so:

x + y = 2

x + (x + 8) = 2

2x + 8 = 2

2x = -6

x = -3

Then we solve for y:

x + y = 2

-3 + y = 2

y = 2 + 3

y = 5

Answer:

ur answer should be C. But I'm not really sure..

The table in which y is a linear function of x is; Choice C

According to the question;

The slope of a linear function is always constant.

Hence, By observing the table in Choice C;

Slope = (8-6)/(0-(-1)) = (10-8)/(1-0) = 2.

Hence, since slope of the function is constant, the required table is: Choice C.

Read more on linear function;

https://brainly.com/question/24502219

Step-by-step explanation:

‌[tex]\large \mathcal{Answer}[/tex]

Answer:

Ils sont amicaux, regardez sur le site nosdevoirs

Step-by-step explanation:

Answer:

Hope this helps

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

Answer:

B and D

Step-by-step explanation:

Just trust me

Answer:

9. 16.34

10. 51.84

11. 20.11

12. 76.03

13. 64.09

just look up circumference of a circle and you should be able to put the radius in the first thing that pops up :)

Answer:

Sin x so A

Step-by-step explanation:

Please give me brainliest pls. Im begging you I helped.

Answer:

£213110.48

Step-by-step explanation:

Principal= 200000

Rate = 1.6%

Time = 4 yrs

Amount

= P(1+1.6/100)⁴

=200000(101.6/100)⁴

= 213110.489

= £213110.48

Answer:

15%

Step-by-step explanation:

move the decimal 2 places because you're dividing by 10