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2 years ago

Hey humanoids what is x? 81^5 = 3^x x=?

Mathematics

1 answer:

Greeley [361]2 years ago

6 0

Answer: x=20

Step-by-step explanation: 81 = 3^4, (3^4)^5= 3^(4*5)=3^20. x=20

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A man spends 8/5 of his salary rent. If his left with & 2940. Find his salary:

Ainat [17]

Answer:

A man spends 8/5 of his salary rent. If his left with & 2940. Find his salary:

Step-by-step explanation:

4 0

2 years ago

1. There are 78 sophomores at a school. Each is required to take at least one year of either chemistry or physics, but they may

SVETLANKA909090 [29]

We are given that there are a total of 78 students. If we set the following variables:

$\begin{gathered} C=\text{students only in chemestry} \\ P=\text{students only in physics} \\ PC=\text{students in physics and chemistry} \end{gathered}$

Then, the sum of all of these must be 78, that is:

$C+P+PC=78$

Since there are 15 in chemistry and physics and 47 in chemistry, we may replace that into the equation and we get:

$47+P+15=78$

Simplifying:

$62+P=78$

Now we solve for P by subtracting 62 on both sides:

$\begin{gathered} 62-62+P=78-62 \\ P=16 \end{gathered}$

Therefore, there are 16 students in physics

3 0

1 year ago

Calculate the average speed of the car in m/s

Alina [70]

Answer:

14.4 m/s

Step-by-step explanation:

The speed of the car can be found by dividing the distance by the time. The distance is 0.8m 9 times or 0.8(9)=7.2 meters and the time is 0.5 seconds

$s=\frac{d}{t} \\s=\frac{7.2}{0.5} \\s=14.4$

3 0

3 years ago

4x^9y^-4 / x^8y^-6 Evaluate the expression for x = 5 and y = 2. ху

kramer

Answer:

Step-by-step explanation:

SIMP - lifiy the equation: (see what I did there :D)

4xy^2 = 4(5)(2^2) = 80

ANSWER: 80

3 0

3 years ago

in the function y= -1/2(x-1)^2+3, what effect does the negative sign have on the graph, as compared to the graph of y=x^2?

Karo-lina-s [1.5K]

The negative sign will have an effect in terms of which way the graph opens up. Since the function starts off negatively the graph will open down, like an upside down U. Rather if the function started off positive I.e Y=x^2 the graph will open upwards like a upright U.

3 0

3 years ago