Evaluating expressions please help

Answer:

Sydney

Step-by-step explanation:

Every other one actually makes sense but if you use her method on any other equation it wouldn't work.

Answer:

18-26i

Step-by-step explanation:

hope this helps :)

We have to find b

[tex]\\ \sf\longmapsto y=mx+b[/tex]

[tex]\\ \sf\longmapsto -1=\dfrac{-2}{3}(-3)+b[/tex]

[tex]\\ \sf\longmapsto -1=-2(-1)+b[/tex]

[tex]\\ \sf\longmapsto -1=2+b[/tex]

[tex]\\ \sf\longmapsto b=-3[/tex]

Now put in equation

[tex]\\ \sf\longmapsto y=\dfrac{-2}{3}x-3[/tex]

Option D

Answer:

12 yes 21 yes 23 no 30 yes 33 no 45 no

Step-by-step explanation:

11/6 si es mayor que 1 y es mayor con

0.833333333

Answer:

[tex]5 + 4( - 20) \\ 5 + ( - 80) \\ 5 - 80 \\ = - 75[/tex]

I hope I helped you^_^

Answer:

5+4(-20)

Step-by-step explanation:

So you do the one's in parentheses first, which is -20, and then you do 5+4  which is 9

Step-by-step explanation:

(1.6 x 10^*5)(6.7 x 10^*18)

=10.72 × 10²³

=1.072×10²⁴

Hello there!

(1.6x10^5)(6.7x10^18)

1.072x10^24

Hope this helps you! :)

[tex](: GraceRosalia :) *^**^**^**^[/tex]

Answer:

42-(-26)

Step-by-step explanation:

you're just subtracting a negative and positive

Step-by-step explanation:

The [tex]\huge{\triangle}[/tex]JGH and [tex]\huge{\huge{\triangle}}[/tex]MNK are congruent by the rule of Area-area-side (AAS)

Answer:

Domain is 3 <x>_-2

Range is 6 <x>_-3 (the lines are supposed to be under the >. it means equal to)

Step-by-step explanation:

First look on the x-axis, is goes from 3 to -2. now look at the colored in dot. that means more than or equal to. So the sign of -2 is x >_ -2. put the 3 on the other side. It stops at three so the sign is > 3. so 3<x>_ -2

Do the same with the y-axis except look up and down instead of left and right. so the numbers are 6 and -3. Use the same method above. this is set builder notation.

Answer: It would be about 10 cents an ounce.

Step-by-step explanation:

1.25/12 = ~.10

Answer:

I really don't know but good luck

Answer:

A balance scale.

Step-by-step explanation:

A device for weighing. It has a balanced beam and two pans. When the pans contain exactly the same mass the beam is in balance. You can place an object in one pan and standard weights in the other to find what the object weighs.

Answer:

[tex]( - 5x - 7)(3 {x}^{2} - 4x - 5) \\ \\ - 15 {x}^{3} + 20 {x}^{2} + 25x - 21 {x}^{2} + 28x + 35 \\ \\ - 15 {x}^{3} + 20 {x}^{2} - 21 {x}^{2} + 25x + 28x + 35 \\ \\ = - 15 {x}^{3} - {x}^{2} + 53x + 35[/tex]

I hope I helped you^_^

Answer:

=÷×°°¥==÷¥✓5+7+12+16=40

Answer:  y-9=2(x-5)

Step-by-step explanation: The point (5,9) satisfies the equation:

y-9=2(x-5)  for (5,9)?

9-9=2(5-5) ?

0 = 0  YES

Slope of 2?  Rewrite:  

y-9=2(x-5)

y = 2(x-5)+9

The slope is 2  YES

Answer: 8x^2 -4x -7

Step-by-step explanation: the x^2 term comes first, followed by the x, then the constant which in this case is -7

so it would be 8x^2 -4x -7

The polynomial -7 + 8x² - 4x written in descending order is 8x² - 4x - 7.

To write the polynomial -7 + 8x² - 4x in descending order, we arrange the terms from highest degree to lowest degree.

Here's how to do it step by step:

Step 1: Identify the degree of each term:

The term -7 has a degree of 0 (since it is a constant).

The term 8x² has a degree of 2 (since it has a variable raised to the power of 2).

The term -4x has a degree of 1 (since it has a variable raised to the power of 1).

Step 2: Arrange the terms in descending order based on their degrees:

Start with the term with the highest degree and proceed in decreasing order. In this case, we have only three terms, so we start with the highest degree term:

8x² (degree 2)

Next, we consider the next highest degree term:

-4x (degree 1)

Finally, we have the constant term:

-7 (degree 0)

Step 3: Write the polynomial in descending order:

Putting the terms together in descending order, we have:

8x² - 4x - 7

So, the polynomial -7 + 8x² - 4x written in descending order is 8x² - 4x - 7.

Learn more about polynomials in descending order click;

https://brainly.com/question/27944007

#SPJ6

Answer:

at first find the value of x by combining both equations then put the value of x in first equation (2x-9).

I HOPE IT WILL HELP YOU.

Thank you.

TEDDYLOVER

Answer:

x+y>=3

Step-by-step explanation:

values of x and y are all greater than or equal to 3

Answer:

Step-by-step explanation:

To solve for x you have to move the -5y to the other side of the equals sign.  Since the opposite of subtracting is adding, we will add 5y to both sides to get

x = 5y + 6

Answer:

the answer i got was x=5y+6

Step-by-step explanation:

mathwey

Hey there! :)

[tex]\frac{23}{24} *\frac{34}{56}[/tex]

Let's reduce our fraction:

We can divide 24 and 34 by 2:

[tex]\frac{23}{12} *\frac{17}{56}[/tex]

Now it's a little easier. All we have to do is multiply 23 times 17 and 12 times 56.

[tex]\frac{391}{672}[/tex]

hope it helps..

Answer:

-47

Step-by-step explanation:

-8(5)+-7

= -40 -7 (+ gets elimanated by the -)

= -47

Answer:

it is C 16

Step-by-step explanation:

x² - kx + 64

Since we are looking for a perfect square, then we need to take the square root of 64 to find the factors: √64 = 8

So, the factors are: (x - 8)(x - 8)

 Foil (or distribute) to get: x² - 16x + 64 The k-value is 16

Answer:

c = 15

Step-by-step explanation:

(7c - 7) + (6c - 8) = 180

Simplify

13c -15 = 180

13c = 195

c = 15