All categories

3 years ago

Need help asap

Mathematics

2 answers:

vlabodo [156]3 years ago

8 0

Answer:

7680

Step-by-step explanation:

16(24)20

7680

son4ous [18]3 years ago

8 0

V = 2,560 m^3

Step-by-step explanation:

The formula for the volume of a pyramid is...

$V=\frac{1}{3}Bh$

B is the area of the base, which in this case is a rectangle. We need to find the area of the rectangle to plug in for B.

The formula for the area of a rectangle is...

$l*w$

We can plug in the numbers.

$16*24$

= 384

Now that we have B, we can plug that into the volume formula along with the height.

$V=\frac{1}{3}(384*20)$

$V=\frac{1}{3}*7,680$

V = 2,560 m^3

You might be interested in

Estimate the surface area of the rectangular prism. A) 28cm B) 32cm C) 64cm

Ede4ka [16]

Answer:

it a

Step-by-step explanation:

4 0

3 years ago

OH GOD PLEASE HELP ME MY BRAIN HURTS!

alukav5142 [94]

Your answer should be 71. :)

8 0

2 years ago

15. 3x – 4y = -1 5x + 2y = 7

never [62]

Answer:

x = 1, y = 1

Step-by-step explanation:

3x - 4y = -1

5x + 2y = 7

If we multiply the whole second equation by 2, we get:

10x + 4y = 14

Adding this to the first equation:

10x + 4y + 3x - 4y = 14 - 1

13x = 13

x = 1

Applying this to the second equation:

5 (1) + 2y = 7

2y = 2

y = 1

8 0

3 years ago

For a moving object, the force acting on the object varies directly with the object's acceleration. When a force of 10 N acts on

Step2247 [10]

Answer:

The force is 12 N

Step-by-step explanation:

* Lets explain how to solve the problem

- Direct variation is a relationship between two variables that can

be expressed by an equation in which one variable is equal to a

constant times the other

- If y ∝ x , then y = kx , where k is the constant of variation

* Lets solve the problem

- The force acting on the object varies directly with the object's

acceleration

∵ The force is F in newtons and a is the acceleration is m/s²

∴ F ∝ a

∴ F = ka

- To find k substitute F and a by the initial values of them

∵ A force of 10 N acts on a certain object, the acceleration of the

object is 5 m/s²

∵ F = 10 N when a = 5 m/s²

∵ F = ka

∴ 10 = k(5)

- Divide both sides by 5

∴ K = 2

- Substitute the value of k in the equation

∴ F = 2a

- Lets find the force when the acceleration is 6 m/s²

∵ a = 6 m/s²

∴ F = 2(6) = 12

* The force is 12 N

5 0

2 years ago

Help is it A or B? pls help

Damm [24]

Answer:

$f(x)=-(x+8)(x-2)$

Step-by-step explanation:

Start by factoring out a -1...

$f(x)=-(x^2+6x-16)$

Now, we have to find two integers that multiply to get -16 and have a sum of 6:

(-2)*8=-16

-2+8=8-2=6

Using this, we can split 6x into -2x and 8x...

$f(x)=-(x^2-2x+8x+16)$

Factor the first and second half separately...

$f(x)=-[(x^2-2x)+(8x-16)]\\f(x)=-[x(x-2)+8(x-2)]\\$

Since both x and 8 are being multiplied by x-2, we can combine them to get...

$f(x)=-(x+8)(x-2)$

5 0

2 years ago