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3 years ago

Im on a time limit! could someone help me with this?

Mathematics

2 answers:

katovenus [111]3 years ago

7 0

Answer:

B is the answer because the other equations have real numbers

Step-by-step explanation:

ipn [44]3 years ago

4 0

Answer:

B is the correct answer

Step-by-step explanation:

You might be interested in

Help please I’m not good at rational functions.

GuDViN [60]

Answer:

See below.

Step-by-step explanation:

$\frac{6z^2-12z}{4z^2-16z+16} +\frac{3z}{z^2-z-2} \\\\$

First, factor the numerators and the denominators:

$=\frac{6z(z-2)}{4(z^2-4x+4)}+\frac{3z}{z^2-z-2}\\=\frac{6z(z-2)}{4(z-2)^2}+\frac{3z}{(z-2)(z+1)}\\=\frac{3z}{2(z-2)}+\frac{3z}{(z-2)(z+1)}$

Now, make the two denominators equivalent. To do this, we can multiply the first term by (z+1) and multiply the second term by 2. This will give us:

$(\frac{z+1}{z+1} )(\frac{3z}{2(z-2)})+(\frac{2}{2})(\frac{3z}{(z-2)(z+1)})\\=\frac{3z(z+1)}{2(z-2)(z+1)}+\frac{6z}{2(z-2)(z+1)} \\$

Now, combine them since they have a common denominator:

$=\frac{3z^2+3z+6z}{2(z-2)(z+1)}\\ =\frac{3z^2+9z}{2(z-2)(z+1)} \\=\frac{3z(z+3)}{2(z-2)(z+1)}$

This cannot be simplified further.

7 0

3 years ago

4x = 3/7 I really need help

kakasveta [241]

To solve this problem, we need to simplify.

4x = 3/7
x = 3/7 ÷ 4
x = 12/7
x = 1 5/

Hope this helps!

7 0

3 years ago

Help needed! Trying to get answer

Angelina_Jolie [31]

1/27 and (3^15)*(3^-18)

4 0

3 years ago

1.) In \large 10^5 the "10" is the exponent/power and the "5" is the base. Is this true or false?

Over [174]

Answer:

False.

Step-by-step explanation:

10 is the base and 5 is the exponent

$10^{5}$

4 0

3 years ago

A group of people were asked if they had run a red light in the last year. 290 responded "yes", and 177 responded "no". Find the

GuDViN [60]

Answer:

0.621

Step-by-step explanation:

Number of people that have run a red light in the last year = 290

Number of people that have not run a red light in the last year = 177

Total number of respondents = 290 + 177

= 467

Pr(if a person is chosen at random, they have run a red light in the last year) = $\frac{number of people who has run the red light last year}{total number of respondents}$

= $\frac{290}{467}$

= 0.621

The probability that if a person is chosen at random, they have run a red light in the last year is 0.621.

6 0

3 years ago