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3 years ago

Is 0 a prime or a composite

Mathematics

2 answers:

schepotkina [342]3 years ago

7 0

0 is neither prime or composite along with the number 1.

rodikova [14]3 years ago

6 0

It's not prime or composite it's neither

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Which statements are true about the ordered pair(-1, -4) and the system of equations?

Lesechka [4]

Answer:

a) when (-1,-4) is substituted into the first equation

then the equation is satisfied

b) The ordered pair(-1, –4) is a solution to the system of linear equations.

Step-by-step explanation:

Step(i):-

Given that the system of equations

x -y =3 ...(i)

7x -y =-3 ...(ii)

subtracting (i) and (ii) equations , we get

x -y -(7x-y) = 3 -(-3)

x - y - 7x + y = 6

- 6x = 6

x = -1

Step(ii):-

Substitute x=-1 in equation (i), we get

x -y =3

-1 -y = 3

y = -1-3

y = -4

The solution of the given system of equations (-1,-4)

Final answer:-

a) when (-1,-4) is substituted into the first equation

then the equation is satisfied

b) The ordered pair(-1, –4) is a solution to the system of linear equations.

6 0

3 years ago

Tyra solves the equation as shown.

juin [17]

-3+2x=9
+3. +3
2x=12(you divide)
6. She multiplied the -3 and 2 then she added the x to the three. Idk how to explain it

7 0

3 years ago

Determine the value of variables a, b, and c that make each equation true.

dybincka [34]

Corrected Question

Determine the values of a, b and c that make each equation true.

$(x^a)^6=\dfrac{1}{x^{30}} \\\\(x^{-7})^{-4}=x^b\\\\(x^{-2})^c=x^{22}$

Answer:

a=-5, b=28 and c=-11

Step-by-step explanation:

To solve for a,b and c, we apply the following laws of indices

$\dfrac{1}{x^y}=x^{-y} \\\\(x^m)^n=x^{m X n}\\\\$If x^m=x^n,$ then m=n$

Therefore

$(x^a)^6=\dfrac{1}{x^{30}}\\x^{a*6}=x^{-30}\\6a=-30\\a=-5$

To solve for b

$(x^{-7})^{-4}=x^b\\x^{-7*-4}=x^b\\x^{28}=x^b\\b=28$

To solve for c

$(x^{-2})^c=x^{22}\\x^{-2*c}=x^{22}\\-2c=22\\c=-11$

4 0

3 years ago

How do you know a mixed number in a decimal

erma4kov [3.2K]

It will have an number in the one’s place such as 1.25=1 1/4

8 0

3 years ago

Read 2 more answers

The area under a particular normal curve between 6 and 8 is 0.695. A normally distributed variable has the same mean and standar

TiliK225 [7]

Answer:

69.5%

Step-by-step explanation:

A feature of the normal distribution is that this is completely determined by its mean and standard deviation, therefore, if two normal curves have the same mean and standard deviation we can be sure that they are the same normal curve. Then, the probability of getting a value of the normally distributed variable between 6 and 8 is 0.695. In practice we can say that if we get a large sample of observations of the variable, then, the percentage of all possible observations of the variable that lie between 6 and 8 is 100(0.695)% = 69.5%.

4 0

3 years ago