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enot [183]
2 years ago
11

Write an example of a numerical expression

Mathematics
1 answer:
tester [92]2 years ago
8 0

Answer:

5+3 x 4 sorry this one is kinda easy lol -_-||

Step-by-step explanation:

You might be interested in
Lynnette can wash 95 cars in 55 days. How many cars can Lynnette wash in 11 days?
hichkok12 [17]

Answer:

19 cars.

Step-by-step explanation:

Using a fraction is easy. Here's the ratio: 95/55

Reduce.

95/55    =     ?/11

Divide 55 by 5 and you get 11. Do the same for 95.  95 divided by 5. Then you get 19. That's your answer.

5 0
3 years ago
Pls help! On the day of the big game, 298 marching band members were waiting to get on the
elixir [45]

Answer:

here u go!

Step-by-step explanation:

each bus can fit 45 people and there are 298 TOTAL. there will be an extra bus with less than 45 people btw.

first divide 298 by 45, you will get 6.2 something. however, you CANNOT have .2 of a bus. the 6 represents 6 buses of 45 people.

now taking that 6 again, multiply it by 45. 45 x 6 = 270. we have 28 people left over, this adds an extra bus.

7 buses will be needed to get them to the game.

4 0
2 years ago
A train travels 540 miles in 4.5 hours. What is the train's rate in miles per hour?
mezya [45]

Answer:

The train travels at 120 miles per hour.

Step-by-step explanation:

All we have to do is divide 540 by 4.5

540 ÷ 4.5 = 120

So the answer is 120 miles per hour.

Hope this helps! :)

3 0
2 years ago
Suppose y varies directly with x, and y= 10 when x=-2. What direct variation equation relates x and y? What is the value of y wh
Musya8 [376]

The statement " <span>y </span>varies directly as <span>x </span>," means that when <span>x </span>increases,<span>y </span>increases by the same factor. In other words, <span>y </span>and <span>x </span>always have the same ratio:

<span><span> = k</span>   </span>

<span>where </span><span>k </span>is the constant of variation.
<span>We can also express the relationship between </span><span>x </span><span>and </span><span>y </span>as:

<span><span>y = kx</span>   </span>

<span>where </span><span>k </span>is the constant of variation.

Since <span>k </span>is constant (the same for every point), we can find <span>k </span>when given any point by dividing the y-coordinate by the x-coordinate. For example, if <span>y </span>varies directly as <span>x </span>, and <span>y = 6</span> when <span>x = 2</span> , the constant of variation is <span>k =  = 3</span> . Thus, the equation describing this direct variation is <span>y = 3x </span>.

Example 1: If <span>y </span>varies directly as <span>x </span>, and <span>x = 12</span> when <span>y = 9</span> , what is the equation that describes this direct variation?

<span>k =  =  </span>
<span>y =  x</span>

Example 2: If <span>y </span>varies directly as <span>x </span>, and the constant of variation is <span>k =  </span>, what is <span>y </span>when <span>x = 9</span> ?

<span>y =  x = (9) = 15</span>

As previously stated, <span>k </span>is constant for every point; i.e., the ratio between the <span>y </span>-coordinate of a point and the <span>x </span>-coordinate of a point is constant. Thus, given any two points <span>(x 1, y 1)</span> and <span>(x 2, y 2)</span> that satisfy the equation, <span> = k </span>and <span> = k </span>. Consequently, <span> =  </span>for any two points that satisfy the equation.

Example 3: If <span>y </span>varies directly as <span>x </span>, and <span>y = 15</span> when <span>x = 10</span> , then what is <span>y </span>when <span>x = 6</span> ?

<span> =  </span>
<span> =  </span>
<span>6() = y </span>
<span>y = 9</span>

3 0
3 years ago
What is the percent increase from 30 to 57
Softa [21]

Answer:

90%

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
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