PLEASE HELP GUYS I NEED IT BADDDD

Answer:

402.12

Step-by-step explanation:

V=πr2h= π·42·8≈402.12386

Answer:

864 feet

Step-by-step explanation:

Plug numbers in

Answer:

From bottom = 30 cm

Below top = 20 cm

Step-by-step explanation:

Length & breadth of the aquarium = 40cm(as it is square)

Volume of aquarium = l x b x h

volume of aquarium = 40 x 40 x 50 = 80000 cm³

Volume of water = ½ half of aquarium

Volume of water = ½ x 80000 = 40000 cm³

Volume of the solid cube = a³ = (20cm)³ = 8000cm³

Surely, 40000>>>8000, level doesnt reach the top of the tank.

Volume acquired = 40000+8000=48000 cm³

Now, let it has reached reached a height h from the ground(bottom).

Volume = 48000 => lx b x h = 48000

=> 40 x 40 x h = 48000

=> h = 30 cm

The height at which water has reached is 30 cm(from bottom).

Thus, below the top it has reached = total height - 30 cm = 50 - 30 = 20 cm

Answer:

60

Step-by-step explanation:

If -30 is its only zero, than the factors are (x+30)(x+30) = [tex]x^2 + 60x + 900[/tex]

Than b = 60

The value of b of the function f (x) would be,

⇒ b = 60

A relation between a set of inputs having one output each is called a function. and an expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable (the dependent variable).

Given that;

The function is,

⇒ f (x) = x² + bx + 900

And, -30 as its only zero.

Now, The value of zero of function is satisfy the function as;

⇒ f (- 30) = 0

⇒ (- 30)² + (- 30)b + 900 = 0

⇒ 900 - 30b + 900 = 0

⇒ 1,800 = 30b

⇒ b = 60

Thus, The value of b of the function f (x) would be,

⇒ b = 60

Learn more about the function visit:

https://brainly.com/question/11624077

#SPJ2

Answer:

29.394 square feet.

Step-by-step explanation:

There is no explanation for this answer.

Answer:

30 ft

Step-by-step explanation:

10 x 6 = 60

60 ÷ 2 = 30

formula : base x height ÷ 2

Answer:

A - s^2

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

Answer:

0002 0011 1010

0020 0101

0200 1001

2000 1100

9 times

Step-by-step explanation:

9 times is the right answer

Slope: 1/5

Y-intercept: 0

Equation: Y= 5x

Answer:

a) 2,350,000,000

b) 25,000,000

c) B

Step-by-step explanation:

a) 2350 X 1,000,000 = 2,350,000,000

b) 25 X 10^6 = 25,000,000

c) sqrt(90000) =300

Answer:

5/18

Step-by-step explanation:

Volume= length•width•height

5/6•1/2= 5/12

5/12•2/3= 10/36= 5/18

Answer:

30

Step-by-step explanation:

i believe that the 13 is there to throw you off. anyway to solve just do 5•12=60

60÷2=30 so 30 is area of triangle

area of triangle =1/2×base×height

area of triangle=1/2×12×5

area of triangle=30 unit²

Answer:

Step-by-step explanation:

38% of 60 = [tex]\frac{38}{100}*60 = 0.38*60 = 22.8[/tex]

Answer:

Step-by-step explanation:

38% * 60

[tex]\frac{38}{100} * 60\\\\\frac{38}{5} * 3\\\\114/5 = 22.8[/tex]

Step-by-step explanation:

If there are 40 kids and 22 of them play soccer that leaves you to subtract 22 from 40 which gives you 18. After that, you put the rest of the 18 students over a total of 40 and divide to get the decimal .45 and if you convert that into a percent you are left with 45%.

1. 40-22=18

2.18/40=.45

3.45=45%

Answer:

B

Step-by-step explanation:

i took the test

Answer 870.15

Step-by-step explanation:

[tex]f(x) = - \sqrt{x + 5 + 4} + 1 - 3[/tex]

[tex]f(x) = - \sqrt{x + 9} - 2[/tex]

Answer:

y= 169 −  [tex]100^{2}[/tex]

Step-by-step explanation:

A parabola is a symmetrical plane curve that forms when a cone intersects with a plane parallel to its side.

Standard form of a quadratic function represent a parabola.

The equation of parabola is [tex]y=-x^{2} +1.69[/tex]

We have to find the formula for the parabola that has x- intercepts  [tex](1.3,0)[/tex] and [tex](-1.3,0)[/tex], and y- intercept [tex](0,1.69)[/tex]

So that, the intercept form of the quadratic equation is;

                    [tex]y=a(x-p)(x-q)[/tex]

where [tex](-1.3,0)=(p,0)[/tex]  and [tex](1.3,0)[/tex] is[tex](q,0)[/tex].

Since, with the vertex being at the y axis and the intercepts at the x axis means that the parabola opens down.

So that,

           [tex]1.69=a(0+1.3)(0-1.3)\\ \\1.69=-1.69 a\\ \\a=-1[/tex]

Substituting value of a in above equation.

           [tex]y=-1(x+1.3)(x-1.3)\\\\y=-1(x^{2}-1.69 )\\\\y=-x^{2} +1.69[/tex]

Hence, the equation of parabola is [tex]y=-x^{2} +1.69[/tex]

Learn more about the equation of parabola here:

https://brainly.com/question/4148030

Answer:

x=7/2

Step-by-step explanation:

Answer:

x=7/2

Step-by-step explanation:

x-(2x+1)=8-(3x+2)

x-2x-1=8-3x-2

-x-1=6-3x

+x on both sides

-1=6-2x

-6 on both sides

-7=-2x

7=2x

÷2 on both sides

7/2=x

Hope this helps =]

Answer:

371.26

Step-by-step explanation:

Using trig we can do tan(68)*5 to find the height of the parallelogram, after this we can do the height times 30 to find the answer

Answer:

B

Step-by-step explanation:

Using the pythagorean theorem A^2 + B^2 = C^2 the only numbers that work are those in choice B. 8 short leg, 15 long leg, 17 hypotenuse.

8^2 + 15^2 = 17^2 = 64 +225=289 = 289=289 therefor proving these set of numbers are a right triangle.

11.5

Step-by-step explanation:

Answer:

y ≥-3.5

Step-by-step explanation:

the hollow circle means equal too and the arrow is pointing towards the positive side so y can only be bigger than or equal to -3.5

Answer:

11

Step-by-step explanation:

am so smart

Answer:

f(x) = A*∛(x + 2) + 3

Step-by-step explanation:

Suppose a generic cube as:

f(x) = A*∛(x - b) + C

We will have a turning point at the x value:

x = b

Then if we have a turning point at (-2, 3)

This means that the turning point is at x = -2 and y = 3

Then b = -2

And our cube root function will be something like:

f(x) = A*∛(x - (-2)) + C

f(x) = A*∛(x + 2) + C

And we know that f(-2) = 3

then:

f(-2) = A*∛(-2 + 2) + C = 3

f(-2) =  A*∛(0) + C = 3

      = C = 3

Then the general equation will be something like:

f(x) = A*∛(x + 2) + 3

Answer:

Step-by-step explanation:

B i don’t know

Answer:

A

Step-by-step explanation:

Answer:

3

Step-by-step explanation:

Answer:

The answer is above the solid line.

Step-by-step explanation:

Answer:

1a, 2b, 3d, 4a, 5c, 6b, 7a, 8b, 9c, 10d, 11d, 12a, 13c, 14b, 15a, 16b

Step-by-step explanation:

Answer:

a. r = 8 cm

b. The volume of the cone is approximately 1,229 cm³

Step-by-step explanation:

The given parameters are;

The slant height of the cone  = l cm

The base radius of the cone = r cm

The total surface area of the cone = 224·π cm

r : l = 2 : 5

Therefore, we have;

[tex]\dfrac{r}{l} = \dfrac{2}{5}[/tex]

[tex]r= \dfrac{2}{5} \times l[/tex]

The total surface area of a cone, T.S.A.  = π·r·l + π·r²

The total surface area of the cone, T.S.A. cone = π × (2/5)·l² + π·((2/5)·l)²

T.S.A. cone = π × (2/5)·l² + π·((2/5)·l)² = π·((2/5)·l² + (4/25)·l²)

T.S.A. cone = π·l²·((2/5) + (4/25)) = (14/25)·π·l²

∴ T.S.A. cone = 224·π cm² = (14/25)·π·l²

l² = 224 cm² × 25/14 = 400 cm²

l = √(400 cm²) = 20 cm

[tex]r= \dfrac{2}{5} \times l = \dfrac{2}{5} \times 20 \, cm = 8 \, cm[/tex]

r = 8 cm

b. The volume of a cone, V = 1/3·π·r²·h

Where;

h = The height of the cone

By Pythagoras's theorem, h = √(l² - r²)

∴ h = √(20² - 8²) = √(336) = 4·√(21)

The height of the cone, h = 4·√(21)

The volume of the cone, V = 1/3 × (22/7) × 8² × 4·√(21) ≈ 1,229.00315781

∴ The volume of the cone, V to the nearest whole number ≈ 1,229 cm³.

Answer:

30%

Step-by-step explanation:

Answer: good luck

Step-by-step explanation: