Evaluate the following expression, when x=-2

2x^2+4x-3

A) 3
B) 3
C) -19
D) 9​

Answer

i think its like 20 percent

Step-by-step explanation:

Answer:

Step-by-step explanation:

Yes correct.

Commutative property upon integer addition/subtraction

-3 + 2 = 2 - 3

Answer:

assuming that you mean x=25 and y=20

25-20 = 5

Step-by-step explanation:

Answer:

70,000

Step-by-step explanation:

5,000

20

70,000

Answer:

The answer is B

Step-by-step explanation:

Answer:

the answer is B. 3.87

Step-by-step explanation:

Answer:

Yoni will catch Traci after 20 minutes.

Step-by-step explanation:

Answer:

30

Step-by-step explanation:

36-6=30 I don't know if that was the answer you were looking for

Answer:

0.80p

Step-by-step explanation:

sale price = p - (20% of p)

= p - 0.20p

= 0.80p

Answer:

12 inches

Step-by-step explanation:

now i am assuming kevin took 6 inches of the sub before the game because it says "there was still 30 inches of the sub when the game started". In that case, add 6 and 30 to get 36. Because the sub was cut into 3 equal pieces, divide 36 by 3 and get 12 inches as your final answer.

Answer:

a. 5ab                  b. 11x+15y

Answer:

a. 5ab

b. 11x+5y

Step-by-step explanation:

12ab-7ab they have the same variables, so you can just subtract

19x+5y-8x just rearrange it to 19x-8x+5y and subtract 19x and 8x

Answer:

57.05

Step-by-step explanation:

Answer:

$57.05

Step-by-step explanation:

$8.15 x 7 = $57.05

Answer:

i have the same question and i think

A. 26.88

B. 80.68

Step-by-step explanation:

Answer:

Graph B is the correct answer. Just in case it is not choice B for you, it's the graph with points (1,1), (2,2), (3,4), and (4,8) in that order. Sadly, the other guy is incorrect and you should not listen to him.

Step-by-step explanation:

The graph that represents a geometric sequence is (b) (1, 1), (2, 2), (3, 4), (4, 8)

A geometric sequence is a sequence that has a common ratio

The common ratio of a geometric sequence is calculated as:

[tex]r = \frac{y_2}{y_1}[/tex]

Using the above rule, we have:

[tex]r = \frac{2}{1} = \frac 42 = \frac 84[/tex]

[tex]r =2 =2 =2[/tex]

The above represents option B, and it has a common ratio of 2

Hence, the graph that represents a geometric sequence is (b) (1, 1), (2, 2), (3, 4), (4, 8)

Read more about geometric sequence at:

https://brainly.com/question/12006112

Answer:

answer is 27 degrees

Step-by-step explanation:

first of all complementary angles add up to 90 degrees and you were given one angle

63 + x = 90

63-63 +x =90 -63

x = 27

hope that helps

Answer:

2/3

Step-by-step explanation:

it is also 3/2 right so if I multify by 2/3 it is 6/6 which is 1

Answer: 4 deeds per day

Step-by-step explanation: 7 times 4 is 28

Answer:

472 feet

Step-by-step explanation:

The 220 ft is the opposite leg.

The distance from the boat to the base of the lighthouse is the adjacent leg.

tan 25 = 220/x

x = 220/tan 25

x = 472

Answer 472 feet

Solve the equation below for X

1/3(-x + 3) = -x - 4

Answer: x = -15/2 = -7.500

Work~~

Rearrange:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

                    1/3*(-x+3)-(-x-4)=0

Step by step solution :

STEP

1

:

           1

Simplify   —

           3

Equation at the end of step

1

:

  1              

 (— • (3 - x)) -  (-x - 4)  = 0

  3              

STEP

2

:

Equation at the end of step 2

 (3 - x)    

 ——————— -  (-x - 4)  = 0

    3      

STEP

3

:

Rewriting the whole as an Equivalent Fraction

3.1   Subtracting a whole from a fraction

Rewrite the whole as a fraction using  3  as the denominator :

             -x - 4     (-x - 4) • 3

   -x - 4 =  ——————  =  ————————————

               1             3      

Equivalent fraction : The fraction thus generated looks different but has the same value as the whole

Common denominator : The equivalent fraction and the other fraction involved in the calculation share the same denominator

STEP

4

:

Pulling out like terms

4.1     Pull out like factors :

  -x - 4  =   -1 • (x + 4)

Adding fractions that have a common denominator :

4.2       Adding up the two equivalent fractions

Add the two equivalent fractions which now have a common denominator

Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:

(3-x) - ((-x-4) • 3)     2x + 15

————————————————————  =  ———————

         3                  3  

Equation at the end of step

4

:

 2x + 15

 ———————  = 0

    3  

STEP

5

:

When a fraction equals zero :

5.1    When a fraction equals zero ...

Where a fraction equals zero, its numerator, the part which is above the fraction line, must equal zero.

Now,to get rid of the denominator, Tiger multiplys both sides of the equation by the denominator.

Here's how:

 2x+15

 ————— • 3 = 0 • 3

   3  

Now, on the left hand side, the  3  cancels out the denominator, while, on the right hand side, zero times anything is still zero.

The equation now takes the shape :

  2x+15  = 0

Solving a Single Variable Equation:

5.2      Solve  :    2x+15 = 0

Subtract  15  from both sides of the equation :

                     2x = -15

Divide both sides of the equation by 2:

                    x = -15/2 = -7.500

One solution was found :

x = -15/2 = -7.500

Answer:

47.93

Step-by-step explanation:

45*.065=2.925

2.92+45=47.93

Hope this helps :)

Answer:

31.6

Step-by-step explanation:

Answer: Percentage of not defective parts =88.88% which can be rounded up to 89%

Step-by-step explanation:

Total part manufactured= 36

defective parts = 4

Non defective parts = 36-4 = 32.

Percentage of not defective parts = Number of not defective parts / Total parts manufactured x 100

= 32/36 x 100= 88.88%

Answer:

1 gallon

Step-by-step explanation:

Answer: