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Korolek [52]
2 years ago
14

How many shovels of sand need to be added to two shovels of cement?

Mathematics
1 answer:
Alborosie2 years ago
4 0

Answer:

8 sand shovels

Step-by-step explanation:

1 cement needs 4 sand shovels

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Solve forx: x^2 = 5x
Akimi4 [234]

Answer:

x = 5

x = 0

Pulling out like terms :

2.1     Pull out like factors :

  x2 - 5x  =   x • (x - 5)

Equation at the end of step  2  :

 x • (x - 5)  = 0

Step  3  :

Theory - Roots of a product :

3.1    A product of several terms equals zero.

When a product of two or more terms equals zero, then at least one of the terms must be zero.

We shall now solve each term = 0 separately

In other words, we are going to solve as many equations as there are terms in the product

Any solution of term = 0 solves product = 0 as well.

Solving a Single Variable Equation

4 0
3 years ago
Anchara drops a penny from a height of 60 feet above the ground. The equation h=-16t^2 + 60 models the penbys height h i feet as
weeeeeb [17]

Answer:

t = 1.94 seconds

Step-by-step explanation:

we have to solve the following polynomial equation:

-16t² + 60 = 0

16t² = 60

t² = 60/16 = 3.75

t = √3.75 = 1.936491673 seconds

the equation also has another possible answer = -1.936491673 seconds, but since time cannot be negative, we have to dismiss that option

7 0
2 years ago
4. Bradford hopped into his Ford Mustang GT to rush to Diana and tell her
OLEGan [10]

Answer:

See explanation and image attached

Step-by-step explanation:

Acceleration refers to the rate of change of speed with time. We can see that between 0 and 4.7 seconds he accelerated quickly . That means that the rate of change of speed with time was greatest between 0 and 4.7 seconds.

A graph of the motion is shown in the image attached. We can see that he maintained a constant speed after 4.7 seconds.

5 0
3 years ago
What is the slope of a line that passes through the points. (-2, 3) and (4, -12)?
Crank

Answer:

5/2

Step-by-step explanation:

5/2

4 0
3 years ago
What is the probability of obtaining 3 heads and 1 tail (order irrelevant) on four flips of a fair coin?
dem82 [27]

1/2 probability of 1 flip

1/2 x 1/2 x 1/2 x 1/2 = 1/16 probability

8 0
3 years ago
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