Round your answer to the nearest 10th

PLEASE HELP WILL GIVE BRAINLIEST AND 20 POINTS

klio [65]

15 inches.

The side length of the base is 4. Find the surface area of the base only by squaring the side length - 4² - which is 16. The surface area of the base is 16 in².

The surface area of the entire pyramid can be found using this equation:

$SA = B + \frac{1}{2} nbl$

Where:
- SA is the surface area (136 square inches)
- B is the area of the base (16 square inches)
- n is the number of triangles (4, because it's a square pyramid)
- b is the base length (4 inches)
- l is the slant length

Note that we have many parts of this equation, and all we need is the slant length. So, let's format the equation with what we have:

$136 = 16 + \frac{1}{2} * 4 * 4 * l$

So then we want to solve for l, the slant height. So, start by subtracting 16 from each side. This would give us:

$120 = \frac{1}{2} * 4 * 4 * l$

Now, multiply both sides by 2 to get rid of the fraction:

$240 = 4 * 4 * l$

Finally, divide both sides by four, twice (divide by 16):

$15 = l$

So, we know that the slant height of this pyramid is 15 inches.

4 0

4 years ago

What is y−(−3y) help plzz

marysya [2.9K]

It will be y+3y and the answer is 4y

8 0

3 years ago

Read 2 more answers

Solve for . 5w-26=-4(w-7) Simplify your answer as much as possible. PLZ HELP

NikAS [45]

Answer:

w = 6

Step-by-step explanation:

5w-26 = - 4 (w - 7) multiply -4 through

5w - 26 = - 4w + 28 add 4w to each side to cancel it out on the right

5w + 4w - 26 = 28

9w - 26 = 28 Now add 26 to each side

9w - 26 + 26 = 28 + 26

9w = 54 Now divide each side by 9

(9w)/9 = 54/9

w = 6

7 0

3 years ago

For any given rational function, differentiate between a function’s vertical and horizontal asymptotes. In two or more complete

kupik [55]

For any given rational function, the vertical asymptotes represent the value of x that will make the denominator of the function equal to zero. The horizontal asymptote represent the value of y that results to an undefined value of x. The asymptotes serve as limits for the domain and range of the function.

5 0

3 years ago

Read 2 more answers

Please answer these questions!!!!!! Fast!!!!!!

vodka [1.7K]

Answer:

For an object of mass M and velocity V, the kinetic energy is written as:

K = (M/2)*V^2

And also remember that:

1 J = 1 kg*m/s

a) we know that:

Mass = M = 0.7 kg

Velocity = V = 60 m/s

Then the kinetic energy is:

K = (0.7kg/2)*(60m/s)^2 = 1,260 J

b) We know that in a closed system, the energy is conserved.

This means that if we hit an object with an energy E, the maximum energy that we can give to that object is E.

Then if we have a bat of mass M = 2kg, and velocity V = 30m/s

The kinetic energy of the bat (before hitting the ball) is:

K = (2kg/2)*(30m/s)^2 = 900 J

Obviously, this will never happen, because after we hit the ball the bat keeps moving for a bit, meaning that it still has some kinetic energy and it did not transfer all of the kinetic energy to the ball. But we can not have a more precise estimation, because we do not know the mass of the ball and a lot of other needed information, so we can conclude that, the theoretical maximum energy that could be given to the ball, is 900 J.

c) Here we have:

Mass = M = 1950 kg

Velocity = V = 10 m/s

then the energy is:

K = (1950kg/2)*(10 m/s)^2 = 97,500 J.

d) Notice that in the equation of the kinetic energy we have the velocity squared, which means that the contribution of the velocity is larger than the contribution of the mass.

Then the option with the largest velocity most likely would have the largest kinetic energy, then the correct option is the second counting from the top, with a kinetic energy equal to:

K = (0.25 kg/2)*(50m/s)^2 = 312.5 J.

5 0

3 years ago