F(x,y)=-2x^2-2xy-2y^2+35x+42y-158

Answer:

c. 12/4 = l/8

please follow me

Answer:

The number that goes in place of the question mark is 2.

Step-by-step explanation:

Let's solve it!

3x² + 12x - 24 = 0

First we can factor 3 out of each term:

x² + 4x - 8 = 0

Now we'll add 12 to both sides to complete the square:

x² + 4x + 4 = 12

And finish it off:

(x + 2)² = 12

So the answer to the question is 2

Bonus:

We can also now solve this for x:

(x + 2)² = 12

x = √12 - 2

x = 2√3 - 2

x ≈ 2 × ±1.732 - 2

x ≈ 1.464, -5.464

Answer:

96 square tiles can be paved on a rectangular floor.

Step-by-step explanation:

First, we need to find the area of the square tiles:

[tex]A_{t} = (25 cm)^{2} = 625 cm^{2}[/tex]

Now, the area of the rectangular floor is:

[tex] A_{f} = 3m*2m = 6 m^{2}*\frac{(100 cm)^{2}}{1 m^{2}} = 60000 cm^{2} [/tex]

Finally, the number of square tiles which can be paved on a rectangular floor is:

[tex] N = \frac{A_{f}}{A_{t}} = \frac{60000 cm^{2}}{625 cm^{2}} = 96 [/tex]

Therefore, 96 square tiles can be paved on a rectangular floor.

I hope it helps you!  

Answer:

Number of cars 16 profit-30

The equation most closely estimates the number of pages Kevin has remaining to read will be x + 73 + 89 = 295.

Algebra is the study of abstract symbols, while logic is the manipulation of all those ideas.

The definition of simplicity is making something simpler to achieve or grasp while also making it a little less complicated.

Kevin is reading a 295-page book. On Friday, he read 73 pages. On Saturday, he read 89 pages.

Let 'x' be the number of pages to be read. Then the equation is given as,

x + 73 + 89 = 295

More about the Algebra link is given below.

https://brainly.com/question/953809

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Answer:

8

Step-by-step explanation:

I hope this helps you out with your question! Can you plz consider marking me brainliest and thanks! Plz tell me how the answer was! It feel nice to be appreciated! Comment /free for a giveaway entry of 20 thanks and 2 brainliest. Have an awesome day! Let me know if you have any questions! -KaraYeaton18

Answer:

8

Step-by-step explanation:

10+6=18; 8+8=16

2(x + 7) + 3(x + 1) =

= 2x + 14 + 3x + 3 = 5x + 17

Answer:

3.25$

Step-by-step explanation:

Answer: A

Step-by-step explanation:

Answer:

Choice A) 140 m²              (actual area = 135.46 m²)

Step-by-step explanation:

area = (12 x 16) - (3.14)(6²)(0.5)

area = 192 - 56.54 = 135.46 m²

Median is the middle value.

Each set has 7 numbers so put the numbers in order from smallest to largest. The median would be the 4th number in the sets.

Only 2 sets have the number 15 in them so those are the only two you need to look at.

The 3rd choice is the correct answer.

Answer:

option c

Step-by-step explanation:

there are no solutions because they are parallel as they have same slope

Answer:

O.K.A.Y

Step-by-step explanation:

The volume of a cuboid is 420cm3.

The length is 10cm and the width is 7cm.

Work out the height of the cuboid.

Answer:

cylinder

Step-by-step explanation:

The cost: $14.25

Equation: 24.5=2c-4

The cost of each lunch is $10.25.

The division in mathematics is one kind of operation. In this process, we split the expressions or numbers into the same number of parts.

Given;

Mariko and her friend spent $24.50 on lunch.

Their lunches cost the same amount,

and they used a $4 off coupon.

That means,

they spent = 24.5 - 4

= 20.50

And 20.50 divided by 2,

we get,

20.50/2

= 10.25

Therefore, $10.25 is the cost of each lunch.

To learn more about the division;

https://brainly.com/question/13263114

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Answer:

[tex]\Large \boxed{\sf 384 \ m^2}[/tex]

Step-by-step explanation:

Surface area ⇒ area of 2 triangles + area of 3 rectangles

[tex](8 \times 3 \times 0.5 \times 2)+(20 \times 5 \times 2+20 \times 8)=384[/tex]

Answer:

95.3

Step-by-step explanation:

Answer:

a

c

b

i think those are right hope im not wrong good luck

Answer:

16 units

Step-by-step explanation:

4*4

Answer:

Step-by-step explanation:

A = bh/2

4b/2 = 4

4b = 8

b = 2 units

Answer:

the 2 numbers are 12 and -9

Step-by-step explanation:

x + y = 3

x - y = 21    Adding:-

2x = 24

x = 12

y = 3 - x = 3  12 = -9

Answer the 2 numbers are 12 and -9

Answer:

The numbers are 12 and - 9.

Step-by-step explanation:

12 - 9 = 3

- 9 to 12 is 21

Answer:

Sound needs a material medium for their propagation like solid, liquid or gas to travel because the molecules of solid, liquid and gases carry sound waves from one point to another. Sound cannot progress through the vacuum because the vacuum has no molecules which can vibrate and carry the sound waves.

I got

[tex]0.75 + 2\pi \times n[/tex]

[tex]5.28 + 2\pi \times n[/tex]

[tex]1 + 2\pi \times n[/tex]

5.53+2pi times n

WORK:

[tex](3 \sin(2x) + 3 \cos(2x) )) {}^{2} = 9[/tex]

[tex] \sin(2x) + \cos(2x) {}^{2} = 3[/tex]

[tex] \sin(x) + \cos(4 {x}^{2} ) = 3[/tex]

[tex]4 {x}^{2} + x = 3[/tex]

[tex]4 {x}^{2} + x - 3 = 0[/tex]

[tex](4x {}^{2} + 4x - 3x - 3 = 0[/tex]

[tex]4x(x + 1) - 3(x + 1) = 0[/tex]

[tex](4x - 3)(x + 1)[/tex]

Solve for x

[tex]4x - 3 = 0[/tex]

[tex]4x = 3[/tex]

[tex]x = \frac{3}{4} [/tex]

[tex]x + 1 = 0[/tex]

[tex]x = - 1[/tex]

While -1 is a solution, it isn't within the interval of 0,2pi.

However, we can use the reference angle identity

[tex] \cos(x) = \cos(x + 2\pi) [/tex]

So some more possible points are

[tex] - 1 + 2\pi[/tex]

Since it on a interval, it must be less than 2 pi or 6.28.

Let find some more points

[tex] - 1 + 2\pi = 5.28[/tex]

So 5.28 is a point,

[tex] \frac{3}{4} + 2\pi = 7.03[/tex]

That is too big since -6.28 is smaller than 7.03

We can use the identity

[tex] \cos(x) = \cos( - x) [/tex]

[tex] \cos( - 1) = \cos( 1 ) [/tex]

1 is smaller than 2pi so it is true.

[tex] \cos( \frac{3}{4} ) = \cos( - \frac{3}{4} ) [/tex]

Negative 3/4 is smaller than zero so it not a solution.

[tex]0.75[/tex]

[tex]5.28[/tex]

[tex] 1[/tex]

Make sure to include

[tex]2\pi \times n[/tex]

so

[tex]0.75 + 2\pi \times n[/tex]

[tex]5.28 + 2\pi \times n[/tex]

[tex]1 + 2\pi \times n[/tex]

We can also -3/4 plus 2 pi.

Which is about 6

5.53.

Answer:

22

Step-by-step explanation:

tbh I just plugged it in my calculator c:

hope this helped tho!!

Answer:

C

Step-by-step explanation:

If you need the explanation tell me

:D

Answer:

48 dozen cupcakes

Step-by-step explanation:

20 percent more is 120 percent overall, which as a decimal is 1.2. Multiply 40 by 1.2 and you have your answer.

1.2 * 40 = 48

Hopefully this helps- let me know if you have any questions

Answer:

21

Step-by-step explanation:

Replace b with 5:

6(2(5)-4)

Simplify:

6(10-4)

Subtract:

6(6)

Multiply to get the answer: 36

The answer is 36

Hey there!

6(2b - 4)

= 6(2(5) - 4)

= 6(10) - 4)

= 6(10) + 6(4)

= 60 - 24

= 36

Therefore, your answer should be: 36

Good luck on your assignment and enjoy your day!

~Amphitrite1040:)

Answer:

x=29

Step-by-step explanation:

The sum of angles in a triangle is 180deg.

We know this is a right triangle, so the third angle is 90deg, leaving us with 90deg for the other two.

(2x-2) + (x+5) = 90

3x + 3 = 90

3x = 87

x = 29

Answer:

here u go ...just do it and try to understand who I did it

Answer:

[tex](0.4x + 6y)^2[/tex]

Step-by-step explanation:

Given

[tex]4.8xy+36y^2+0.16x^2[/tex]

Required

Express as a binomial squared

[tex]4.8xy+36y^2+0.16x^2[/tex]

Rewrite as:

[tex]0.16x^2+4.8xy+36y^2[/tex]

Expand

[tex]0.16x^2 + 2.4xy + 2.4xy + 36y^2[/tex]

Factorize:

[tex]0.4x(0.4x + 6y) + 6y(0.4x + 6y)[/tex]

Factor out 0.4x + 6y

[tex](0.4x + 6y)(0.4x + 6y)[/tex]

Express as a square:

[tex](0.4x + 6y)^2[/tex]