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2 years ago

Are those correct? Pls 21 POINTS!!!

Mathematics

1 answer:

Flura [38]2 years ago

7 0

Answer:

question 5 is supposed to be: A) Equation

and question 4 is right :D

Step-by-step explanation:

Hope this helps :)

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Please help quickly please

bulgar [2K]

Answer:

I believe the answer you want would be 40 and 7

6 0

2 years ago

Ifj. 1. what is the value of i

melomori [17]

Answer:

i

Step-by-step explanation:

The square root of a negative number is identified as an imaginary number (i )

An imaginary number (i) with exponent 3 or any other exponent remains an imaginary number.

The answer is:

i

3 0

3 years ago

Lance is a 60-kg runner who, on a good day, runs at a speed of 5 m/s. What is his kinetic energy when he runs at this speed?

Rom4ik [11]

Answer: 750 Joules.

Step-by-step explanation:

Use the equation: K = 1/2 x m x s^2

1/2 x 60 = 30.

30 x (5 x 5) 25 = 750

Lance's kinetic energy when he runs at this speed is 750 Joules.

5 0

3 years ago

What is tge total surface area of a solid sphere of diameter 14cm

Alborosie

The surface area of a sphere of radius r is A = 4π*r^3.

Since the radius in this case is 7 cm (half the 14 cm diameter), the area of this sphere is

A = 4π(7 cm)^2, or 196π cm^2.

7 0

3 years ago

Find the greatest common factor of the following monomials: 20a3 and 8a2

dimulka [17.4K]

GCF of given monomials are $4a^2$

Solution:

Given that we have to find the greatest common factor

Given monomials are:

$20a^3 \text{ and } 8a^2$

When we find all the factors of two or more numbers, and some factors are the same, then the largest of those common factors is the Greatest Common Factor

Let us first find the GCF of 20 and 8 and then find GCF of variables and then multiply them together

GCF of 20 and 8:

The factors of 8 are: 1, 2, 4, 8

The factors of 20 are: 1, 2, 4, 5, 10, 20

Then the greatest common factor is 4

$GCF\ of\ a^3 \text{ and } a^2\\\\a^3 = a^2 \times a\\\\a^2 = a^2$

Thus GCF is $a^2$

Therefore GCF of monomials are:

$\text{GCF of } 20a^3 \text{ and } 8a^2 = 4 \times a^2 = 4a^2$

Thus GCF of given monomials are $4a^2$

5 0

3 years ago