All categories

3 years ago

A number is increased by 30, and the

Mathematics

2 answers:

SIZIF [17.4K]3 years ago

5 0

Answer:

The number is 17

Step-by-step explanation:

Let the number be n. Increasing this by 30 results in n + 30. Tripling this result results in 3(n + 30) = 141.

Multiplying as indicated: 3n + 90 = 141, or

3n = 51

Solving for n, we get n = 51/3 = 17

Novosadov [1.4K]3 years ago

4 0

Answer:

The original number is 17.

Step-by-step explanation:

$3(x+30)=141\\\\\frac{3(x+30)}{3}=\frac{141}{3}\\\\x+30=47\\\\x+30-30=47-30\\\\x=17$

You might be interested in

9/10 written as a sum of unit fractions like the Egyptians used to use.

Alexeev081 [22]

<span><span>1/2</span>+<span>1/3</span>+<span>1/15 is how it would be written as</span></span>

3 0

3 years ago

Which expression is equivalent to log3 c/9?

stepladder [879]

Hello!

There is an existing logarithmic property that states that $log \frac{M}{N}$ is equal to $log M-logN$ .

Following that property, we can tell that $log \frac{c}{9}$ would be equal to $log(c)-log(9)$ .

ANSWER: $log(c)-log(9)$ (third option)

5 0

3 years ago

Read 2 more answers

What happens to the parabola when a<1 compared to the parent function?

d1i1m1o1n [39]

Answer: The parabola is wider than the parent function

<u>Step-by-step explanation:</u>

If "a" is a fraction less than one, then the parabola becomes wider.

See graph (attached)

<em />

3 0

3 years ago

In how many ways can five indistinguishable rooks be placed on an 8-by-8 chess- board so that no rook can attack another and nei

german

The are 40320 ways in which the 5 indistinguishable rooks be can be placed on an 8-by-8 chess- board so that no rook can attack another and neither the first row nor the first column is empty

<h3 /><h3>What involves the rook polynomial? </h3>

The rook polynomial as a generalization of the rooks problem

Indeed, its result is that 8 non-attacking rooks can be arranged on an 8 × 8 chessboard in r8.

Hence, 8! = 40320 ways.

Therefore, there are 40320 ways in which the 5 indistinguishable rooks be can be placed on an 8-by-8 chess- board so that no rook can attack another and neither the first row nor the first column is empty.