Can someone please help?

Answer:

x = 0

Step-by-step explanation:

10 + 10 = -2(4x - 10)

20 = -8x + 20

0 = -8x

0/-8 = x

0 = x

Answer: x=0

Step-by-step explanation:

Given

10+10=-2(4x-10)

Combine like term

20=-2(4x-10)

Distributive property (REMEMBER you need to change signs when it is negative outside)

20=-8x+20

Subtract 20 on both sides (subtractive property of equality)

-8x=0

Divide -8 on both sides (division property of equality)

x=0

Hope this helps!! :)

Please let me know if you have any question

Answer:

1:4

Step-by-step explanation:

Let it be:

then

----------

Amount of acid:

So the ratio of 30% solution to the 5% solution is 1:4

Answer:

  1 : 4

Step-by-step explanation:

For a problem of this nature, a simple diagram makes the solution trivially easy. In the attached, the constituent concentrations are listed on the left, the solution concentration is in the middle, and the numbers on the right are the differences along the diagonals. These are the ratios of the respective solutions on the left.

That is, the ratio of 30% solution to 5% solution is 5 : 20 or 1 : 4.

We can conclude the following information:

Every 3 hours the temperature changes.

At 9 AM, the temperature was -1.6°F:

9 AM = -1.6°F =>

Between 9 AM and noon, the temperature rose 6.6°F:

12 PM = -1.6 + 6.6 = 5°F =>

Between noon and 3 PM, the temperature increased by 2.8°F:

3 PM = 5 + 2.8 = 7.8°F =>

Between 3 PM and 6 PM, the temperature went down 10.5°F:

6 PM = 7.8 - 10.5 = -2.7°F

What was the temperature at 6 PM?

-2.7°F

Answer:

Energy=Mass * the speed of light^2

Step-by-step explanation:

I'm not to sure how to explain this but I'll try my best.

Albert Einstein discovered this equation, E=mc^2.

The equation says that energy and mass (matter) are interchangeable; they are different forms of the same thing.

You could probably search up better explanations, tell me if this helps.

Answer:

x=2

Step-by-step explanation:

6x+2x-9=7

Combine like terms on each side of the equation

8x-9=7

Add 9 to each side

8x=16

Divide by 8 on each side

x=2

Simplifying

6x + -2x + -9 = 7

Reorder the terms:

-9 + 6x + -2x = 7

Combine like terms: 6x + -2x = 4x

-9 + 4x = 7

Solving

-9 + 4x = 7

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '9' to each side of the equation.

-9 + 9 + 4x = 7 + 9

Combine like terms: -9 + 9 = 0

0 + 4x = 7 + 9

4x = 7 + 9

Combine like terms: 7 + 9 = 16

4x = 16

Divide each side by '4'.

x = 4

Simplifying

x = 4

Step-by-step explanation:

Answer:

The answer is B. 75 - f = 56

Step-by-step explanation:

Answer:

∠Q = ∠U = 60°

Step-by-step explanation:

Construct the figure QSUT with your own dimensions as long as QR ≅ RU and SR ≅ RT , where R is the common midpoint.

I choose QR = 4 cm and SR = 5  cm

Then measure ∠Q and ∠U to check if they are equal.

I got that ∠Q = ∠U = 60° proving that;

∠Q ≅ ∠U

Answer:

1. 69°

2. 97°

3. 145°

4. 150°

5. 128°

6. 74°

Step-by-step explanation:

To find the angle measure of the missing angle, we have to note that the angle measures of a quadrilateral will all equal up to be 360°.

If we know 3 out of the 4 angles and the sum of the angles, we can add up the angles we know then subtract that from 360.

Number 1:

[tex]87+112+92=291[/tex]

[tex]360-291=69[/tex]

Number 2:

[tex]124+71+68=263[/tex]

[tex]360-263=97[/tex]

Number 3:

[tex]95+46+74=215[/tex]

[tex]360-215=145[/tex]

Number 4:

[tex]72+49+89=210[/tex]

[tex]360-210=150[/tex]

Number 5:

[tex]69+65+98=232[/tex]

[tex]360-232=128[/tex]

Number 6:

[tex]77+123+86=286[/tex]

[tex]360-286=74[/tex]

Hope this helped!

Answer:

x = -5

Step-by-step explanation:

-4x + -3 = 17

-4x - 3 = 17

-4x - 3 + 3 = 17 + 3

-4x = 20

-4x/-4 = 20/-4

x = -5

Hope this helps!

Answer:

x=-5

Step-by-step explanation:

-4x+-3=17

First add 3 to both sides.

-4x=20

Then divided by -4

Note: Negatove divided by postive is negative.

20÷(-4) = -5

So.

x=-5

Answer:

[tex] \boxed{ \bold{ \huge{ \boxed{ \sf{24x - 20}}}}}[/tex]

Step-by-step explanation:

Given,

Length ( L ) = 6x - 5

Perimeter of a square ( P ) = ?

Finding the perimeter of a square having length of 6x- 5

[tex] \boxed{ \bold{ \boxed{ \sf perimeter \: of \: a \: square \: = 4l}}}[/tex] ( where l is the side of the square )

plug the value of length

⇒[tex] \sf{4(6x - 5)}[/tex]

Distribute 4 through the parentheses

⇒[tex] \sf{4 \times 6x - 4 \times 5}[/tex]

⇒[tex] \sf{24x - 20}[/tex]

Hope I helped!

Best regards!!

The value of x = 10 and y = 6 if the scale factor of A to B is 1:2.

Scale image is defined as a ratio that represents the relationship between the shape and size of a figure and the corresponding dimensions of the actual figure or object.

We have been given that the scale factor of A to B is 1:2.

Here one length of triangle A is 5 inch

For finding y, we have to divide 12 by 2

⇒ x = 12/2 = 6 inch

Here one length of triangle B is 12 inch

For finding x, we have to multiply 2 to 5

⇒ y = 2×5 = 10 inch

Therefore, the value of x = 10 and y = 6.

Learn more about the Scale images here:

brainly.com/question/13194929

#SPJ2

Answer:

3

Step-by-step explanation:

Answer: 3

Step-by-step explanation:

constant: a number that has no variable bounded to it (very lonely number)

---------------------

4x-2y+3

constant: 3 (it does not have any variable)

Hope this helps!! :)

Please let me know if you have any question or need further explanation

Answer:

d is correct

Step-by-step explanation:

Given

10(30x - 5y) = - 40y + 600 ( divide both sides by 10 )

30x - 5y = - 4y + 60 ( add 5y to both sides )

30x = y + 60 ( subtract 60 from both sides )

30x - 60 = y → d

Answer:

1m/s²

Step-by-step explanation:

Acceleration is the change in velocity of a body with respect to time.

Acceleration = Change in velocity/time

Acceleration (a) = final velocity(v)-initial velocity(u)/time(t)

Given parameters:

final velocity v = 4.4m/s

initial velocity u = 1.2m/s

time taken = 3.2s

Required

Acceleration

Substitute the given parameters into the formula to get the acceleration

Acceleration = 4.4 - 1.2/3.2

Acceleration = 3.2/3.2

Acceleration = 1m/s²

Therefore the boy acceleration is 1m/s²

Answer:

Step-by-step explanation:

Let x=0.121212.....

100x=12.121212...

100x-x=12.12121212...-0.121212...

     99x=12

         x=12/99

so 0.121212... is equal to 12/99

Hope this helps!! :)

Step-by-step explanation:

mark as brainlist

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Answer:

2/3

Step-by-step explanation:

the question says you are making a drink using espresso and steamed milk, it doesn't give you any other ingredients, and its a 3oz. drink so 1oz, of espresso and 2oz. of steamed milk  

Answer:19

Step-by-step explanation: you would do 4x5 thats 20 then you would subtract one becasue 4-5=-1

Answer:

all fractions containing integers are rational numbers is true I believe.

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

Answer:

Step-by-step explanation:

2a^2 - 6ab^2 + 4b^2 + a^2 - 2ab + 2b^2

3a^2 - 6ab^2 + 6b^2 - 2ab

Answer:

1) 37

2) 23

3) x = 4

4) 58

Step-by-step explanation:

1) 15 + 22 = 37

2) 54 - 31 = 23

3) 6x + 1 + x + 7 = 36

7x + 8 = 36

7x = 28

x = 4

4) 3x + 10 + 47 = 9x - 39

57 = 6x -39

96 = 6x

16 = x

3(16) + 10 = 58

Answer:

see below

Step-by-step explanation:

             22                15

1.  L -----------------M------------N          LN = 22 + 15              LN = 37

             31                ??

2.  L -----------------M------------N          MN = 54 - 31            MN = 23

     |<-----------54 ---------------->|

             6X+1             X+7

3.  R -----------------S------------T          find X

      (6x + 1) + (x + 7) = 0

       7x = -8

        x = - 8/7

          47              3X+10

4.  D -----------E---------------------F          find EF

     |<--------- 9X - 39 ------------>|    

    47 + (3x + 10) = (9x - 39)

    3x - 9x = -39 - 10 -47

    -6x = -96

     x = -96 / -6

     x = 16

    EF = 3x + 10

    EF = 3(16) + 10

    EF = 58

Answer: All real no. are whole no.

Step-by-step explanation:

Because real no. consists of both rational and irrational no. but whole no. consists of only positive no, i.e. 0,1,2,3,.....

Answer:

knots           mi/h

5 knots         5.7539 mi/h

10 knots        11.5078 mi/h

Step-by-step explanation:

Given

knots           mi/h

5 knots         _mi/h

10 knots        _mi/h

Required

Fill in the gap

From the question, we understand that

[tex]1 knot = 1.15078mi/h[/tex]

Solving (a): 5 knots

Recall:

[tex]1 knot = 1.15078mi/h[/tex]

Multiply both sides by 5

[tex]5 * 1 knot = 1.15078mi/h * 5[/tex]

[tex]5\ knots = 1.15078mi/h * 5[/tex]

[tex]5\ knots = 5.7539\ mi/h[/tex]

Solving (b): 10 knots

Recall:

[tex]1 knot = 1.15078mi/h[/tex]

Multiply both sides by 10

[tex]10 * 1 knot = 1.15078mi/h * 10[/tex]

[tex]10\ knots = 1.15078mi/h * 10[/tex]

[tex]10\ knots = 11.5078mi/h[/tex]

Hence; The complete table is

knots           mi/h

5 knots         5.7539 mi/h

10 knots        11.5078 mi/h

Answer:

8/5 because there are 5 people and 8 cookies

and the cookie monster is here too

Answer:

7,200 pieces are baked in four weeks

Step-by-step explanation:

Here in this question, we are interested in knowing the number of cookies baked in four weeks.

Okay, here we know that there are 6 varieties with 5 dozen of each kind baked everyday.

A dozen is 12 , this means that 5 dozens will be 5 * 12 = 60

Now, 60 pieces of each variety is baked per day. The total number of cookies baked per day is thus 60 * 6 = 360 pieces

Now, a week is just 5 days here. Since we are not considering weekends. Now, the number of days in 4 weeks will be 4 * 5 = 20 days

Since 360 pieces are baked in a day and we have the baking for 20 days in four week, the number of cookies baked is simply the product of the number of pieces and the number of days.

That will be 20 * 360 = 7200 pieces

Answer:

Step-by-step explanation:

Yo it's 9 bro hope this helps mane

Answer:

∠SQR = 53°

Step-by-step explanation:

happy to help

Answer:

The ratio of their volumes (the top to bottom half) is 1/7

Step-by-step explanation:

The given parameters are;

The radius, r, of the cone = 10 cm

The height of the cone = 16 cm

The point at which the cone is divided = The midpoint of the its axis and parallel to its base

The ratio of the of the volume of the two parts is given as follows;

The volume, V of the entire cone = 1/3 × Base area (π·r²) × Height, h

Therefore;

V = 1/3 × π × 10² × 16 =1600·π/3 =  1675.52 cm³

The height at which the cone is divided = 16/2 = 8 cm

The height, h₁ of the uppermost divided cone = 8 cm

The ratio of the radius to the height of the cone = 10/16 = 5/8

The radius r₁, of the uppermost divided cone = The height of the uppermost divided cone × The ratio of the radius to the height of the cone

∴ r₁ = 8 × 5/8 = 5 cm

The volume, V₁, of the uppermost divided cone = 1/3 × (π·r₁²) × h₁

∴ V₁ = 1/3 × π × 5² × 8 = 200·π/3 = 209.44 cm³

Which gives;

The volume of the lower cone, V₂ =  V - V₁

V₂ =  1675.52 cm³ - 209.44 cm³ = 1400·π/3 = 1466.1 cm³

The ratio of their volumes V₁ : V₂ = V₁/V₂ = (200·π/3)/(1400·π/3) = 209.44/1466.1 = 1/7.