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4 years ago

Simplify completely, help me:(

Mathematics

1 answer:

labwork [276]4 years ago

4 0

Answer:

$\frac{3a}{7 {b}^{2} }$

$\frac{2}{x}$

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The amount of money Jose spends on movie tickets varies directly with the number of tickets he purchases.

zzz [600]

7 movie tickets :)

First, we must find the unit price:

20.25/3=6.75

Now we divide:

47.25/6.75=7

I hope you are having a great day, buddy :)

Please mark me as brainliest:)

7 0

3 years ago

What is the common difference for this arithmetic sequence?<br> 29, 42, 55, 68, ..

gregori [183]

Answer:

Common difference is 13 for this arithmetic sequence 29,42,55,68,...

Step-by-step explanation:

Given the arithmetic sequence 29,42,55,68,...

we have to find the common difference of the above sequence.

Common difference of arithmetic sequence is the difference between two successive terms. Therefore, to find common difference we take any pair of successive numbers, and subtract.

Common difference,

d=42-29=13

d=55-42=13

d=68-55=13

Hence, the difference between two successive terms is 3

∴ Common difference is 13

Step-by-step explanation:

7 0

3 years ago

(tan B /1-cot B) + (cot B/1-tan B)<br>Please help me .Full point.

DaniilM [7]

Answer:

Hope it helps i typed and attached it pic through word :)

Step-by-step explanation:

in the pic !!!

4 0

1 year ago

Suppose a loaded die has the following probability model: If this die is thrown and the top face shows an odd number, what is th

PtichkaEL [24]

Answer:

the probability is 0.6

Step-by-step explanation:

The computation is shown below:

Let us assume the X would be the number appear on the top face

Now

= P(X = 1) ÷ P(X = 0)

= 0.3 ÷ 0.3 + 0.1 + 0.1

= 0.3 ÷ 0.5

= 0.6

hence, the probability is 0.6

6 0

3 years ago

I need help! 50 points + brainliest

AlladinOne [14]

Answer:

Part 1)

Part 2)

Step-by-step explanation:

We are given:

$f(x)=5x+1\text{ and } g(x)=x^2-9$

And that:

$h(x)=f(x)/g(x)$

And we want to now for which values of x is h(x) undefined.

So, by substitution:

$\displaystyle h(x)=\frac{5x+1}{x^2-9}$

Remember that for rational functions, the function will be undefined if and only if the denominator is 0.

This is because we cannot divide by 0.

So, to find the values for which the denominator is 0, set the denominator to 0 and solve for x. Therefore:

$x^2-9=0$

Add 9 to both sides:

$x^2=9$

Take the square root of both sides. Since we are taking an even-root, we will need plus/minus. Therefore:

$x=\pm 3$

So, h(x) is undefined for ±3.

Our answer is A.

We are given:

$f(x)=3^x\text{ and } g(x)=3^{2x}-3^x$

And we want to find:

$h(x)\text{ if } h(x)=f(x)-g(x)$

So:

$h(x)=3^x-(3^{2x}-3^x)$

Distribute:

$h(x)=3^x-3^{2x}+3^x$

Combine like terms:

$h(x)=2(3^x)-3^{2x}$

Rewrite:

$h(x)=2(3^x)-(3^x)(3^x)$

Factor out:

$h(x)=3^x(2-3^x)$

So, our answer is C.

6 0

3 years ago