Mathematics College

Consider the expressions 3x(x − 2) + 2 and 2x2 + 3x − 18.


Part 1 out of 2
Evaluate each expression for x = 4 and for x = 5. Based on your results, do you know whether the two expressions are equivalent? Complete the explanation.

For x = 4, each expression has a value of
26
. For x = 5, each expression has a value of
. These results suggest that the expressions
(select)
equivalent, but
(select)
the expressions are equivalent.

Answers

Answer 1

Answer:

See answer below

Step-by-step explanation:

For the first expression

3 x (x - 2) + 2 = 3 x^2 - 6 x + 2

evaluated at x= 4 we get: 26

and for x = 5 we get 47.

For the second expression

2 x^2 + 3 x - 18

we get the exact same values when doing the evaluation at these two points.

Based on those results, one may think the expressions may be equivalent, but they are not equivalent. Because at any other x-value, their results are different. See for example that for x = 0 the first one gives "2" while the second one gives -18.

Related Questions

help please! look at question

Answers

615.75cm is the area

subtract -13xy from -5xy pls

Answers

Answer:   (-13xy) + (-5xy) = -18xy

Step-by-step explanation:

well they are both negatives t=so they cant be subtracted from each other instead they are being added

13 + 5= 18

but remeber to add back the negative sign adn the variables

so its -18xy

-18xy is your answer

Which graph represents the cost of hamburgers at Bulky's Store? Explain

Answers

Answer:

Graph B

Step-by-step explanation:

It seems more realistic i dont think 10 hamburgers would be 3 dollars

2 × (8 + 16 ÷ 8) − 3

Answers

2*(8+16/8)-3

= 2*(8+2)-3

2*10-3

20-3

17

Simplify 16 divided by 8 to 2:
2 x (8 + 2) - 3

Simplify 8 + 2 to 10:
2 x 10 - 3

Simplify 2 x 10 to 20:
20 - 3

Simplify:
17

Can someone HELP ME please!!?

Answers

Your answer is option 1

Evaluate the following expression if x=4 28x - 9 (2x+ 6)​

Answers

Answer:

-14

Step-by-step explanation:

substitute 4 for x

28(4) - 9 (2(4)+ 6)​

multiply

112-9(8+6)

add numbers

112-9(14)

multiply

112-126

subtract

-14

Dora and boots are decorating cupcakes for a bake sale. Dora already has 25 cupcakes decorated and can decorate 10 cupcakes per hour. Boots has no cupcakes decorated yet but can decorate 15 cupcakes per hour. When will Dora and boots have the same number of cupcakes decorated and how many will they have

Answers

Answer: after 5 hours, 75 cupcakes

Step-by-step explanation:

PLZZZZZZZZZZ HELP!!!!!!!!

Answers

Answer:

b

Step-by-step explanation:

cause a negative number is to the left of zero and a positive to the right

at the local flea market, nike and reebok sneakers were being sold. all bike sneakers sold for $75.00 and reebok’s were being sold for $65.00. if 180 people bought sneakers for a total of $12,550, how many of each pair were sold?

Answers

Answer:

69.72

Step-by-step explanation:

Thats the answer if its not plz tell me

help me like right now plzzzzzzzzzzz

Answers

Answer:The answer is 8

Step-by-step explanation:

Whats 200x3 I tried to answer it but it difficult and I knew you guys could help me?

Answers

Answer:

600

Step-by-step explanation:

200x3=600

Answer:

its 1200

Step-by-step explanation:

Which of the following graphs represents the solution to the following system
of inequalities?
3x + 4y <12
2x - y24

Answers

Answer:

I am pretty sure it is most likely answer D.

Step-by-step explanation:

Hope this helps! Have a great day and good luck!

for which set of problilities would events a and b be independent

Answers

Answer:

Events A and B are independent if and only if P(A and B) = P(A)P(B). If you know these probabilities, you can check to see if this holds.

Step-by-step explanation:

:)

Bella and Zoe went blueberry picking. Their blueberries weighed a total of 23.4 ounces. If Bella's
blueberries weighed 11.9 ounces, how many ounces (z) did Zoe pick? *

Answers

Answer:

Zoe picked 11.5 ounces

Step-by-step explanation:

23.4 - 11.9 = 11.5 ounces

HELPP PLEASE !!!!!!

Answers

Answer:

-9

Step-by-step explanation:

The in the first expression, y is to the -9'th degree, which means n is -9.

(If there are numbers of similar term multiplied together, the exponents are to be added.)

solve the given equation for x.
-x/b = 40​

Answers

Answer:

x= -40b

Step-by-step explanation:

only answer i can think of. hope this helps.

Questions:
1. If the run of a ramp increases and the rise stays the same, how does the slope of the ramp change?

Answers

There is an exponential growth therefore the slope rises.

9514 1404 393

Answer:

  slope decreases

Step-by-step explanation:

The slope of a ramp is directly proportional to the rise and inversely proportional to the run. When the run increases, the slope decreases.

Which of these equations are true when the value of y is 27?
I. −9 + y = 18
II. −18 + y = −45
III. 5y = 135
IV. 2y = 29

Answers

Answer:

I. -9 + y = 18

Step-by-step explanation:

Double-check to see if I was correct

The equations I. and III. satisfies the condition when y = 27

What is an Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

The value of y = 27

So , substituting the value of y in all of the given equations , we get

I.  

-9 + y = 18

when y = 27

Substituting the value of y , we get

-9 + 27 = 18

18 = 18

So , I. satisfies the condition and the equation is TRUE

II.

-18 + y = 45

when y = 27

Substituting the value of y , we get

-18 + 27 = 45

9 ≠ 45

So , II. does not satisfy the condition and the equation is FALSE

III.

5y = 135

when y = 27

Substituting the value of y , we get

5 x 27 = 135

135 = 135

So , III. satisfies the condition and the equation is TRUE

IV.

2y = 49

when y = 27

Substituting the value of y , we get

2 x 27 = 29

54 ≠ 29

So , IV. does not satisfy the condition and the equation is FALSE

Hence , the equations I. and III. are TRUE

To learn more about equations click :

https://brainly.com/question/10413253

#SPJ2

Combine like terms in the expression below.


5c + 6 + 8c - 2

Plz help

Answers

Answer:
13c+6-2

Explanation:
You combine the amount of cs with each other.

Find the missing sides of the triangle.. Please Help

Answers

Answer:

there is no possible triangle

Step-by-step explanation:

an obtuse side has to have the largest angle, therefore there is no solution

Convert 6 over 15 to a decimal.
0.2
0.3
0.4

Answers

Answer:

0.4

Step-by-step explanation:

just do 6 divided by 15

Answer: 0.4 :)

Step-by-step explanation:

CAN ANYONE HELP WITH #4????

Answers

Answer:

Just found that it is 3. Btw, try m a t h w a y. com

Step-by-step explanation:

Hope that helps!

What is the definition of Antigen?


Please help

Answers

Answer:

a toxin or other foreign substance which induces an immune response in the body, especially the production of antibodies.

what is 9+2 I WILL MARK BRAINIEST

Answers

Answer:

11 ! have a great dayy:) !

a bag contains 8 blue chips, 7green chips and 2 white chips. if two chips are drawn without replacement, what is the probability of drawing a blue chip and a green chip​

Answers

b=8, g=7, w=2, total=17

(8/17)(7/16)=56/272=7/34

Answer:

7/34

Step-by-step explanation:

5) Graph the following inequality. (3 points) 6x-2y>8

Answers

Answer:

Step-by-step explanation:

help me, please!!!!!

Answers

Answer:

25 cm is the perimeter...........

Answer:

25 cm

Step-by-step explanation:

When you are told that any figure is regular it means all the sides have the same value.

A pentagon has 5 sides.

Each side is 5 cm.

The perimeter is the addition of all the sides.

To find it we just multiply

5*5= 25 cm

Hope it was helpful ;)

What is the correct answer?​

Answers

I think it is 5.64 I hope this helps

Josh's sink leaks 12 of a gallon of water in 14 of an hour. How many
gallons of water does Jacob's sink leak in 2 days?

Answers

Answer: is 14,400 maybe hopefully who knows ‍♂️

An equation is modeled.



What value of x makes the equation true?
(MATH HELP) 7TH GRADE MATH

Answers

Answer:

c

Step-by-step explanation:

(-1)x5= -5

-5+6=1

Answer:

The answer is C.

Step-by-step explanation:

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