You guys please help!! 8th grade math

Answer:

the answer is 27

Step-by-step explanation:

you are subtracting 7  each time  it would be 27  

51-7=45  

45-7=39

39-7=33  

33-7=27

51,45,39,33,27

Answer:

  C.  -2 ( x - 5)

Step-by-step explanation:

Use the distributive property to eliminate parentheses, then combine like terms. Factor the greatest common factor from the result.

  [tex]2x -\dfrac{1}{3}(12x -30)=2x-\dfrac{12}{3}x+\dfrac{30}{3}=2x-4x+10\\\\=-2x+10=\boxed{-2(x-5)}[/tex]

Answer:

c) -2 (x - 5)

Step-by-step explanation:

2x - 1/3 (12x - 30)

2x - 4x + 10

-2x + 10

-2x + 10 can be written as:

-2x + 10

-2 (x - 5)

Check your answer:

-2 (x - 5)

-2x + 10

Hope this helps!

Answer:

72

Step-by-step explanation:

Answer: It will take Mike 72 minutes to read 45 pages.

Plz mark brainliest:)

Answer:

10

Step-by-step explanation:

it is because of Pythagoras's theorem: that the sum of the squares of the two lines that form a right angle, must add up to the square of the hypotenuse (c). So 6²+8² is 100, which is the square of 10.

Answer:

10

Step-by-step explanation:

Pythagorean Theorem tells us that (6)a^2 plus (8)b^2 = (10)c^2

6^2 = 36

8^2 = 64

36 + 64 = 100

sqrt of 100 = 10

c = 10

Answer: Pretty sure it's 390$

Step-by-step explanation:

Answer:

IT IS COMMISON!!!!!!!!!

Step-by-step explanation:

Answer:

22.4

Step-by-step explanation:

the triangle is half of the rectangle so you divide it by two

Answer:

The answer is $5,788.13

Answer:

12

Step-by-step explanation: this is because if the circle is 24 then half the circle should be 12 if not then I don’t know your on you own

The area of a normal full circle is given by;

[tex]a = \pi \: r {}^{2} [/tex]

but since i want a semi circle, i would want that area to be split into 2, right?

So our new equation for the area of a semi circle is given by;

[tex]a = \frac{\pi \: r {}^{2} }{2} [/tex]

where r is the radius of our semi-circle.

The radius is half the diameter, so the radius here would be 24/2 =12

[tex]a = \frac{\pi \times 12 {}^{2} }{2} = \frac{144\pi}{2} = 72\pi = 72 \times 3.14159... = 226.194[/tex]

Answer:

5

Step-by-step explanation:

(12x + 19) + (22x - 9) = 34x + 10

since both are supplementary angles, 34x + 10 = 180

simples algebra leads us to x = 5

Answer:A. Yes; $9.25 is the mode.

Step-by-step explanation:Becuase im smart

Answer:

Yes; $9.25 is the mode.

Step-by-step explanation:

Answer:

22 - 3 × 6 + 52 = 56

Step-by-step explanation:

To solve we must use the order of operations which is PEMDAS

P-Parenthesis

E-Exponents

M-Multiplication

D-Division

A-Addition

and S-Subtraction

Multiply

3×6 = 18

22-18+52

Add and subtract

22-18 = 4

4+52 = 46

Answer:

A

Step-by-step explanation:

BODMAS

M -3×6= -18

A -18+52 = 34

22+34 = 56

Answer:

-22

Step-by-step explanation:

-45 + 23 = -22

Answer:  

Step-by-step explanation:  Using a right triangle as a base, we can assume the length of the bottom is 168 at the start, adding 4 feet to the base length makes it 172, and lowers the height to 47.9 using Pythagorean therom, a^2 + b^2 = c^2

Answer:

235.62

Step-by-step explanation:

First you need to find the area of the big circle as a whole the equation is

A = pir^2

you need to plug in the radius of the big circle which would be

A = pi(10)^2

which equals

314.16

Then you need to find the area of the unshaded circle in the middle using the same formula but replacing the 10 with a 5

which equals

78.54

We then subtract the 78.54 from the 314.16 and we get 235.62 which is the area of the shaded circle to the right

Answer:

[tex]y=8[/tex]

Step-by-step explanation:

Given the following question:

[tex](y-2)\div6=1[/tex]

To find the answer we must remember we need to isolate the variable and get it by itself, first we need to rewrite the expression and solve by using inverse of operations.

[tex](y-2)\div6=1[/tex]
[tex]\frac{(y-2)}{6} =1[/tex]
[tex]6\times0=0[/tex]
[tex]1\times6=6[/tex]
[tex](y-2)=6[/tex]
[tex]-2+2=0[/tex]
[tex]6+2=8[/tex]
[tex]y=8[/tex]

Your answer is "y = 8."

Hope this helps.

Answer:

D

Step-by-step explanation:

Answer:

280cm^3

Step-by-step explanation:

Find the volume of the original container (490), and subtract that from the volume of the second container (770) to get 280cm^3.

The difference in the volume that the two compartments have:

280 [tex]cm^3[/tex]

Given that,

Sum of parallel sides = 15cm + 5cm

= 20 cm

Height = 7 cm

[tex]= 4 cm[/tex]

To find,

The volume of the compartment = Area of base × Height

= {(1/2) × 20} × 7}  × 7

= 490 [tex]cm^2[/tex]   ...(i)

Now,

The new compartment's height = 7 + 4

= 11 cm

Volume for the new compartment = Area of base × Height

= 70 × 11

= 770 [tex]cm^3[/tex]    ...(ii)

Now,

To find the difference in the volumes,

(ii) - (i)

= 770 - 490

= 280 [tex]cm^3[/tex]

Thus, 280 [tex]cm^3[/tex] is the correct answer.

Learn more about "Volume" here:

brainly.com/question/1578538

Answer

I can't really answer all of them because of homework but here is one example #10 I hope it helps you understand :)

Answer:

15 (I think)

Step-by-step explanation

6 x 25 = 150

20% of 150 = 30

10% of 150 = 15

30 - 15 = 15

Sorry if this is wrong.

Bye, have a great day/night.

Answer: 15

Step-by-step explanation:

Facts

6 packs

25 per pack

20% are yellow

10% are white

How many more yellow than white?

Step 1: Find total gummy bears

25x6=150

Step 2: Find how many are yellow

20% of 150= 30

Step 3: Find how many are white

10% of 150=15

Step 4: Find the difference

30-15=15

Answer:

$195 in total

Step-by-step explanation:

You would find the perimeter of the total garden first which equals 54 then times it by 1.5 and get 81 dollars for the gate. Then find the area of the triangle and get 120 then do 2 times 16 and get 32 then you add them together and get 152. Now with the 152 you divide it by 8 then multiple by 6 and finally add your 81 with 114 and get 195 dollars in total.

Answer:

The answer is d

Step-by-step explanation:

Answer: Y= 3x-4 And Y= -3x+2 i think

Step-by-step explanation: but anyway go to my page then click on questions go to the first on  type and answer and get free points and hearts :)

Answer:

C. y=3/4x-3

Slope: 3/4

y-intercept: -3

Equation: y=3/4x-3

Make a table with x and y just like the one shown below

X:Y

0:-3

4:0

As you can see when x is 0 y equals (-3)

That (-3) is your y-intercept

Now we're going to save that for later

Then you do 0-(-3) and 4-0

You should get positive numbers of 3 and 4

Now you do y/x and that will be 3/4

That 3/4 is your slope

We're going to bring back that (-3) we got earlier and make the equation

The equation is y=3/4x-3

Make sure that you check your work as well

I hope you understand what I'm saying here :)

Answer:

[tex]27[/tex]

Step-by-step explanation:

We start by setting an equation.  We have [tex]2x+x+9=90[/tex] which simplifies to [tex]3x+9=90[/tex].  Subtract [tex]9[/tex] from both sides leaves us to solve for x when [tex]3x=81[/tex] divide by [tex]3[/tex] on both sides, we get [tex]x=27[/tex].

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Answer:

r=1.024349

Step-by-step explanation:

The volume of a sphere is found with the formula: (4/3)×3.14×r³. So, if we use an algebra calculator (my favorite is mathpapa), the formula would be (4/3)×3.14×r³=4.5

The radius of a sphere with a volume of 4.5 [tex]\pi[/tex] cubic centimeters is

1.5 centimeters.

A sphere is a 3-dimensional solid figure with a radius and no sides and no vertex.

The formula for the volume of a sphere is

[tex]V = \dfrac{4}{3} \pi r^3[/tex],

Where V is the volume and r is the radius.

According to the data given in the question:

Substitute the given values in the formula,

[tex]4.5\pi = \dfrac{4}{3} \pi r^3[/tex]

Divide both sides of the equation by [tex]\pi[/tex]  gives:

[tex]4.5 = \dfrac{4}{3} \pi r^3[/tex]

Multiply both sides of the equation by [tex]\dfrac{3}{4}[/tex]  gives:

[tex]\dfrac{3}{4}(4.5) = r^3[/tex]

[tex]3.375 = r^3[/tex]

Taking the cube root of both sides gives:

[tex]r = \sqrt[3]{3.375}[/tex]

Using a calculator, we find that the cube root of 3.375  is 1.5 centimeters

Therefore, the radius of the sphere is 1.5 centimeters.

Learn more about sphere here:

https://brainly.com/question/15044609

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Answer:

The below graph should model t = m + 1.5. I'm pretty sure this is correct. I just replaced t with y and m with x.