All categories

3 years ago

Larry says all numbers that have a 2 in their ones place are composite. Explain if Larry is correct or incorrect.

Mathematics

1 answer:

inysia [295]3 years ago

4 0

Answer:

Larry would be wrong if 2(as a prime number) is part of the numbers that has 2 at its ones place, but if 2 is not there, then he is correct.

Step-by-step explanation:

Firstly, we need to know what a composite number is. In simple terms, a composite number is a number that is not a prime number. Meaning that, if a number has more than two factors (1 and itself which is the definition for a prime number), then the number is a composite number.

Larry says all numbers that have 2 in their ones place are composite. It depends, if 2 is the only number that makes up the digit, that is the number itself is 2, then it's obviously a prime number. But any other number having 2 at its ones place is definitely a composite number because the number has more than 2 factors; 1, itself and 2. Example:

12, some of the factors is 1, 12 and 2. Therefore it is a composite number.

Larry would be wrong if 2(as a prime number) is part of the numbers that has 2 at its ones place, but if 2 is not there, then he is correct.

You might be interested in

Quadrilateral ABCD has the following

a_sh-v [17]

Answer:

No because the angle of point C is NOT congruent to the angle of point A.

Step-by-step explanation:

A quadrilateral MUST be a parallelogram if it has both pairs of its opposite angles congruent.

4 0

3 years ago

The product of a number and -7 is 63

Oduvanchick [21]

-7n=63
n=-9 is your final answer. Hope it help!

3 0

3 years ago

Given the function f(x) = –5|x + 1| + 3, for what values of x is f(x) = –12?

Alexus [3.1K]

The answer to your question is negative 52. hope i helped.

7 0

4 years ago

Read 2 more answers

Lauren is planning a field trip. She has 79 students and 12 chaperones attending. Each bus can hold 32 people. How many busses w

zaharov [31]

I would think 3? it should be 3 because 32*2=64 which isn’t everyone 32*3 is 96
79+12=91

6 0

3 years ago

Read 2 more answers

Let f(x) = 1/x . Find the number b such that the average rate of change of f on the interval [2, b] is − 1/8

vekshin1

Answer:

b=4

Step-by-step explanation:

So, we have the function $f(x)=1/x$ . We need to find b such that the average rate of change or the slope is -1/8 between the intervel [2, b]. First, let's find f(2).

f(2) = 1/(2) = 1/2

So, we have the point (2, 1/2)

At point b, f(b) = 1/b.

Let's plug this into the slope formula:

$\frac{y_2-y_1}{x_2-x_1}=\frac{.5-\frac{1}{b} }{2-b} =-1/8$

Now, we just need to solve for b. First, let's multiply both the numerator and denominator by b (to get rid of the annoying fraction in the numerator).

$\frac{.5b-1}{2b-b^2} =\frac{-1}{8}$

Now, cross multiply.

$4b-8=b^2-2b$

$b^2-6b+8=0$

Solve for b. Factor using the numbers -4 and -2.

$=(b-4)(b-2)=0$

Thus, b=4 or b=2.

However, b=2 is not a possible solution since the interval [2,2] means nothing. Thus, b=4.

4 0

3 years ago