If x = 2 and y = -3, what is the value of 2x^2 + 3xy – 2y^2?

Answers

Answer 1

Answer: Given as,X=2 & Y=3,

now multiplying we get,

2xxy=2×2×3=12

Ans.) 12

Step-by-step explanation:


Related Questions

Estimate the sum of the decimals below by rounding to the nearest whole
number. Enter your answer in the space provided.
2.414
8.160
+ 2.621
Help (I also need help learning how too round too the nearest whole number:)

Answers

Answer:

13

Step-by-step explanation:

to round to nearest whole number if its .5 or above you go up 1. If it's .4 or below you go down 1.

2.414=2

8.160=8

2.621=3

add

2+8+3=13

if you just added the decimals you would get: 13.195. (This shows you have a good estimate.)

heeeeeeeellllllllllllpppppppppppppp

Answers

I believe it’s 5/6 I hope you have a good day

Andy made 7 baskets during a basketball game each basket was worth 2 or 3 points how many different numbers could represent the total points scored by jordan

Answers

Answer:

2+3+2+3+2+3+2=17 because each was worth 2 or 3

What is the slope of a line that goes through the points (3, 7) and (8, 11)

Question 4 options:

117

54

−83

45

Answers

Answer:

[tex]\sf \dfrac{4}{5}[/tex]

Step-by-step explanation:

(3,7) ⇒ x₁ = 3 & y₁ = 7

(8 ,11) ⇒ x₂ = 8 & y₂= 11

Slope

[tex]\boxed{Slope = \dfrac{y_{2}-y_{1}}{x_{2}-x_{1}}}[/tex]

          [tex]\sf =\dfrac{11 -7}{8 -3}\\\\\\ = \dfrac{4}{5}[/tex]

in a cyclic quadrilateral ABRS, if AR=BS, prove that AS=RB and AB is parallel to SR​

Answers

arc. BRS=arc. ASR(being AR=BS)
arc. BRS-arc. SR=arcade-arc. SR(removing SR in both side)
arc. AS=arc. BR
AS=BR(arc. AS=arc. BR)
AB//SR(same reason)

A rectangular prism is 20 meters long, 13 meters wide, and 5 meters high. What is the surface area of the rectangular prism?

Answers

Answer:

850m^2

Step-by-step explanation:

Look at the formula SA=L*W*H. And plug in the numbers pertaining the question! hints on to what to add is stuff like "long" for length, "wide" for width, and "high" for height! And use a calculator, or scetch it out to find your total answer!

Hope this helps!

Pls help pls pls ple

Answers

Answer:

10.5 ft

Step-by-step explanation:

This problem is using scaling.

Basically:

2.5(RV) = WZ

Meaning our scale factor is 2.5.

Multiply 4.2 * 2.5

Your answer is 10.5 ft.

Does anyone know the awnser to this problem?

Answers

x y

1 16

2 12

3 8

5 0

Step-by-step explanation:

you have to substitute ever number on the X side in the equation to get the Y

for example 1 is under x so you will take

y=20-4(1)

y=20-4

y=16

to get a free meal tom at his fav resturant, tom needs to spend $50 or more at the resturant. he has already spent 30.25$ how much more does tom need to spend to get his free meal

Answers

to find:

how much more Tom needs to spend to get the free meal.

solution:

subtract the amount he has spent from the amount he needs to spend to find how much more he needs to spend.

$50 - $30.25

= $19.75

Tom needs to spend $19.75 to get his free meal.

can y’all please help, it’s gradpoint. 30 points and brainliest with explanation ! :(

Answers

Answer:

f(g))(0) = 0

Step-by-step explanation:

assuming you mean f(g)(0)

evaluate g(0) then substitute the value obtained into f

x = 0 then g(0) = 2 ← from graph (0, 2 ) , then

x = 2 then f(2) = 0 ← from graph (2, 0 )

What is the approximate area of Laura’s yard?

Answers

To find the area of an irregular shape (in general)

 ⇒ is best to split it into different regular shapes

   ⇒ (in this case), let's split into a half-circle and a square

Area of the half-circle:

 ⇒ half the area of a circle ([tex]\pi r^2[/tex])

     ⇒ Area of half-circle = [tex]\frac{1}{2}\pi r^2[/tex]

r: length of radius ⇒ half of length of the diameter ⇒ 8.5m[tex]\pi[/tex] = 3.14

    Area of Half Circle = [tex]\frac{1}{2}\pi (8.5)^2 = 113.5m^2[/tex]

Area of square

  ⇒ length * width

     ⇒ Area of Square = 17 * 17 = 289[tex]m^2[/tex]

Total Area = 113.5 + 289 = 402.5 ≈ 402[tex]m^2[/tex]

Hope that helps!

 

A circle is drawn inside a square.
a
20 cm
The square has a height of 20 cm.
Work out the shaded area.
Give your answer in terms of t.

Answers

Shaded area = 21.46

Step-by-step explanation:

First find area of square,

Area = length × width

A = 20 × 20

A = 400 cm^2

Secondly, find area of circle

Area of circle = (π)r^2

A = (π)10^2

A = 100 π

Thirdly, find the area outside of the circle

Area of square - Area of circle

400cm^2 - 100π

= 85.84

lastly divide the answer by 4 to find the shaded area

85.84 ÷ 4

= 21.46

James and his family spend a morning picking peaches. They fill several bags. This line plot shows the weight of each bag.

How many more pounds does one of the heaviest bags weigh than one of the lightest bags?

Enter your answer as a fraction in simplest form by filling in the boxes.

Answers

Answer:

3/4

Step-by-step explanation: i took test. pls give brainliest.

solve for the measure of angle JKL in the diagram below? Show your work and explain the steps you used to solve

Answers

Question: calculate the measure of angle JKL, i.e. mJKM+mMKL

Answer:

78°

Step-by-step explanation:

angle JKM is a tangent-chord intersection angle and equals half of the intercepted arc KM of 76°.  Thus

mJKM = 76/2 = 38°

angle MKL is an inscribed angle and equals half of the intercepted arc ML of 80°,  Thus

mMKL = 80/2 = 40°.

Therefore angle JKL = 38°+40° = 78°.

explain why the other expressions do not have like terms A. 14m + mn B. 2y + 2x + 4 C. -3/4m + 8m + m D. 4 - 3p E. 5.75t + 7.75t - t F. 8xy - 6xy

Answers

I think because it's different answers/equation and it it's the same just combine like terms!

HELP been stuck for 1 hour please​

Answers

Answer:

B

Step-by-step explanation:

First, we find the equivalent decimal numbers:

-1.75 = -1.75

-7/10 = -0.7

-1 5/7 = -1.7142...

-0.07 = -0.07

Descending order of the equivalent decimal numbers:

-0.07, -0.7, -1.7142..., -1.75

Now we replace the equivalent decimal numbers with the original numbers.

-0.07, -7/10, -1 5/7, - 1.75

Answer: B

The cyclist drove from the village to the town, 30 km away. back on
the same road, he reduced his speed to 2 km/h and therefore
drove 30 minutes longer. At what speed did the cyclist ride from
the village to the city?

Please I really need your help quick

Answers

Answer:

14.5 hours

Step-by-step explanation:

Take the return trip situation.

From town to village

Distance = 30 kmSpeed = 2 km/hTime = Distance/Speed = 15 hours

That is equal to the sum of t, the time taken from the village to the city and 30 minutes.

⇒ t + 30 minutes = 15 hours

⇒ t + 0.5 hours = 15 hours

⇒ t = 14.5 hours

Find the mean of the data set without the outlier.
Then, find the mean of the data set with the outlier.

Answers

Answer:

Without outlier: 9

With outlier: 8.2

Step-by-step explanation:

Outlier is the lonely point at 1 passenger.

Mean is the average

Without outlier:

one 7

two 8

two 9

four 10

=[7+(2*8)+(2*9)+(4*10)] / 9

= (7 + 16 + 18 + 40) / 9

= 81/9

9

With outlier:

one 1

one 7

two 8

two 9

four 10

=[1+7+(2*8)+(2*9)+(4*10)] / 10

= 82/10

=8.2

Answer:

Mean with outlier: 8.2

Mean without outlier: 9

Hope This Helps! :) Please Give Brainliest!

Sasha's family traveled 2/7 of the distance to her aunt’s house on Saturday. They traveled 4/5 of the remaining distance on Sunday. What fraction of the total distance to her aunt’s house was traveled on Sunday?

Answers

The fraction of the total distance Sasha traveled to her aunts house is 6/7

Step-by-step explanation:

1. Josie lives at the coordinates (8,-4). Ruby lives at (-4, 2). When
Josie rides her bike to Ruby's house, she stops by the ice cream shopthat is 2/3 of the way from her house to Ruby's. What is the location of the shop?

Answers

Answer would be 6/1 because 2/3 - 8/4 would be 6/1 if you subtract

Volume of cylinders, spheres, and cones word problems
A graduated cylinder is filled with 367 cm3 of liquid. The liquid is poured into a different cylinder that has a
radius of 3 cm.
What will the height of the liquid be in the new cylinder?
cm

Answers

The problem is asking for the height of the fluid using the following information:

Volume of fluid
=
V
=
36
π
cm
3
Radius of new cylinder
=
r
=
3
cm


To start the solution, solve for the height
h
in the formula for the volume of a cylinder:

V
=
π
r
2
h
π
r
2
h
π
r
2
=
V
π
r
2
h
=
V
π
r
2
V =π
r
2
h
π
r
2
h
π
r
2
=
V
π
r
2
h =
V
π
r
2


Substituting the values of the volume and the radius, the height of the fluid is:

h
=
V
π
r
2
=
36
π
cm
3
(
3
cm
)
2
=
(
4
)
(
9
)
π
cm
3
(
9
)
cm
2
=
4
π
cm
=
12.5663706144

12.6
cm
h =
V
π
r
2
=
36
π
cm
3
(
3
cm
)
2
=
(
4
)
(
9
)
π
cm
3
(
9
)
cm
2
=4π cm =12.5663706144≈12.6 cm

Thus, the fluid reaches up to
12.6
cm
12.6
cm
in the new cylinder.

b. Tyler's playlist has 36 songs. Noah's playlist has one quarter as many songs as
Tyler's playlist. How many songs are on Noah's playlist?
w = 4 times 36
w = 36 divided by 4
4w = 36
w/4 = 36

Answers

Answer:

9 songs

Step-by-step explanation:

¼ of 36

¼ × 36 = 9

Would this improve my skills or just give me the answer

Answers

Step-by-step explanation:

Ummm i think you should try your best cause thats how you improve

HELPPPPPPPPPPPPPPPPPPPPPP

Answers

Answer:

a) Class D - lowest variability/range

b) Class C - highest average/mean

Hope this helps!

what are the dimensions of a rectangle with an area of 45 square inches and a perimeter of 28 inches?

Answers

Answer:

9 in × 5 in

Step-by-step explanation:

the area of a rectangle :

length × width

and this is 45 in² in our case.

the perimeter of a rectangle is

2×length + 2×width

and this is 28 in in our case.

l×w = 45

l = 45/w

2×l + 2×w = 2×(45/w) + 2w = 28

45/w + w = 14

45 + w² = 14w

w² - 14w + 45 = 0

the general solution to such a squared equation is

x = (-b ± sqrt(b² - 4ac))/(2a)

in our case

x = w

a = 1

b = -14

c = 45

w = (14 ± sqrt((-14)² - 4×1×45))/(2×1) r

= (14 ± sqrt(196 - 180))/2 = (14 ± sqrt(16))/2 =

= (14 ± 4)/2 = 7 ± 2

w1 = 7 + 2 = 9 in

w2 = 7 - 2 = 5 in

l1 = 45/w1 = 45/9 = 5 in

l2 = 45/w2 = 45/5 = 9 in.

so, we see, length and width are interchangeable. it is only important to make one 9 in and the other 5 in.

Joseph researched the ages of some of his favorite professional

football players. He recorded his results in the dot plot below.
Which of the following statements about the distribution are true?


I. There are two peaks at 27 and 28.
II. The distribution is skewed.
III. The distribution does not have an outlier.
IV. The distribution shows a spread of 5.




I only


I, II, and III only


I, III, and IV only


I, II, III, and IV

Answers

The statements that are true about the dot plot are: I, III, and IV only.

What is the Spread of a Data in a Dot Plot?

The range, which is the difference between the maximum and minimum value, is a measure of the spread of a data distribution.

In the dot plot given, the spread of the data is: 30 - 25 = 5.

The peak points are at 27 and 28, and the data looks symmetrical in shape with no clear outlier.

Therefore, the statements that are true about the dot plot are: I, III, and IV only.

Learn more about dot plot on:

https://brainly.com/question/25957672

If charged per cut, how much will it cost
to cut a log into eight pieces if cutting it
into four pieces costs $12?

Answers

Answer:

24

Step-by-step explanation:

4x=12

x=12/4

x=3

8×=?

8(3)=24

therefore, 8 pieces will cost 24.

another way is:

since 8 is 4×2

you could double the amount of money

12x2

which would also give you $24

If charged per cut, it will cost 24 dollar to cut a log into eight pieces if cutting it into four pieces costs $12

What is the unitary method?

The unitary method is a method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value.

Given that to cut a log into eight pieces if cutting it into four pieces costs $12.

Thus,

4x=12

x=12/4

x=3

Hence, for 8 pieces

8(3)=24

therefore, 8 pieces will cost 24.

If charged per cut, it will cost 24 dollar to cut a log into eight pieces if cutting it into four pieces costs $12

Learn more about the unitary method, please visit the link given below;

https://brainly.com/question/23423168

#SPJ2

Write 9/10 as an equivalent fraction with a denominator of 100 then write the fraction as a decimal

Answers

Answer:

Since the denominator has to be 100 and 9/10, 0.90, and 90% are all equal the you would just need to make the 9 into a 90.  Therefore, yout answer will be 90/100.

Question 1 which of the following is the square of a binomial
a. M^2-2mn+n^2
b. c^2-cd+d^2
c. a^2+b^2
d. 4x^2-9y^2
Question 2
square the binomial (r+s). what is the result?​

Answers

Answer:

c just because

Step-by-step explanation:

just because

PLEASE HELP!!
Find the missing side lengths. Round decimals to the nearest tenth.

Answers

Answer:

x=13.9

Step-by-step explanation:

To find x we need an angle other than the right angle to use a trigonometric function. To do this we could either use Sine = Opposite/Hypotenuse or Cosine = Adjacent/Hypotenuse.

In this case i'll be using sine.

To find the angle that is above the right angle we need to use the inverse of Sine. Set up the equation

[tex] \sin^{ - 1} = \frac{22}{26} [/tex]

The answer to this is about 57.8. So now we have an angle to use to solve for x.

So now we set up the proportion

[tex] \frac{ \cos(57.8) }{1} = \frac{x}{26} [/tex]

Cross multiply.

x = 26×cos(57.8)

Put this in a calculator and x is about 13.9

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