1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
HACTEHA [7]
3 years ago
15

If w = -2 and v = -8, which of the following expressions shows the values correctly substituted in for the variables in the expr

ession w 2 - v + 1? -22 - (-8) + 1 -22 - 8 + 1 (-2)2 - (8) + 1 (-2)2 - (-8) + 1
Mathematics
2 answers:
Ahat [919]3 years ago
5 0

Answer:

<em>(-2)2 - (-8) + 1</em>

Step-by-step explanation:

When you substitute values into an algebraic equation, you need to input the values exactly how they are given. "w" must go where there are "w"s, and "v" must go where the "v"s are, otherwise you will get an incorrect answer. All values must also carry over their signs--they are one unit--and must be inserted as such, which is why - (-8) is correct, but not - (8) or - 8. (This is because those two negatives will cancel each other out and become +8 when solving). The parenthesis around the values are important because they protect the original values of the variables, which is why (-2)2 is correct. In the case of (-2)2, it also signifies that they are "attached" by multiplication, and when solving would become -4. Without signifying that the variables are separate from the rest of the equation via the parenthesis, it becomes very easy to solve it incorrectly.

vichka [17]3 years ago
3 0

Answer:

b

Step-by-step explanation:

You might be interested in
2/3 / (-9/4)<br><br> 2/3 divided by (-9/4)
Bezzdna [24]

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

\frac{2}{3}  \div ( -  \frac{9}{4} ) =  \\

\frac{2}{3}  \times( -   \frac{4}{9}) =  \\

-  \frac{2 \times 4}{3 \times 9}  =  -  \frac{8}{27}  =  -  ({ \frac{2}{3} })^{3}  \\

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

8 0
2 years ago
In a direct variation equation, f(x)=6 when x = 4. What is the direct variation equation?
jeyben [28]

Answer:

f(x) = \dfrac{3}{2}x

Step-by-step explanation:

The general direct variation equation is

y = kx

Plug in x = 4 and y = 6 and solve for k.

6 = k * 4

4k = 6

k = 6/4 = 3/2

f(x) = \dfrac{3}{2}x

7 0
3 years ago
Josh buys cucumbers that cost $0.62 per pound.He pays $2.79 for the cucumbers.
Sphinxa [80]
Please refer to the other post you saw.

Josh's estimate IS reasonable because when you have a number 5 or above after the decimal, you round up. Although it's reasonable to round up to 5 pounds, the actual amount is 4.5 pounds, or four and a half.
5 0
3 years ago
10points!<br> will make brainliest for correct answer <br> -8 1/3 + (- 1/6)
pentagon [3]

Answer: -8 1/2 I think

Step-by-step explanation:

First you make -8 1/3 a improper fraction

than you find common denominators

and you keep the sign of the biggest number

simplify if possible

8 0
3 years ago
Someone plplease help me with this ASAP
Vinil7 [7]

Answer: The slope is -6/5

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • Can you help me find the test statistic AND Pvalue for a hypothesis test. The question is: In a survey respondents were asked wo
    8·1 answer
  • What is the answer to 9x-7i&gt;3(3x-7u)
    8·1 answer
  • Is a rectangle a polygon?
    12·2 answers
  • Is sin A is 7/10 what is Cos A
    9·1 answer
  • Express 8.3% as a ratio. OR Find 7% of 500.​
    7·2 answers
  • NEED HELP!!! WILL MARK BRAINLIEST!!!
    6·1 answer
  • What is the product?<br> (6r-1)(-8r-3)<br> -4872-10r +3<br> - 48r2-10r-3<br> -48P?+ 3<br> -48r2-3
    14·2 answers
  • T + 8/10 = 9/10 <br> i need the value of t please
    6·1 answer
  • Please answer the question correctly while showing detailed working. ​
    15·2 answers
  • Let (h) be the interse of f (x)=<br> 4x+ 1, which of the following representes f (x)?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!