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skad [1K]
3 years ago
9

The difference between nine times number and thirty

Mathematics
1 answer:
svetlana [45]3 years ago
3 0
9x-30 I’m pretty sure!
We are finding the difference, which means subtract! Nine times a number would be 9x and since it’s difference you would subtract it by 30.
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The sum of nine times a number and five is one hundred eighty-five
tangare [24]

Answer:

9 x (x +5) = 185

Step-by-step explanation:

I'm pretty sure this is how you write it

4 0
3 years ago
Read 2 more answers
A is inversely proportional to b. If a=7.2 when b=-4, what will a equal when b=6?
Tpy6a [65]

Answer:

<h2>a = - 4.8</h2>

Step-by-step explanation:

To find the value of a when b=6 we must first find the relationship between them.

The statement

a is inversely proportional to b is written as

a \:  \:  \alpha  \:  \:  \frac{k}{b}

where k is the constant of proportionality

When a = 7.2 , b = -4

So we have

7.2=  \frac{k}{ - 4}

k = 7.2 × - 4

k = - 28.8

So the formula for the variation is

a =  -  \frac{28.8}{b}

When

b = 6

That's

a =  -  \frac{28.8}{6}

We have the final answer as

<h3>a = - 4.8</h3>

Hope this helps you

7 0
3 years ago
Which steps could be used to solve this story problem? Krissy had 32 bagels. She gave an equal number of bagels to each child. T
Elina [12.6K]
D, because it said that Krissy had equally distributed the bagels to each child, so 32/8=4, and then it asked how many bagels did the girls get all together, so it's 4x3=12
4 0
3 years ago
Read 2 more answers
1 &amp; 2
sveta [45]
The value of x is 13 for the first attachment. 
5 0
3 years ago
Marcus wants to save $378 in order to buy a new electronic
melomori [17]

Marcus would need to save for 24 weeks in order to purchase a new electronic keyboard.

<h3>Define the meaning of the equation?</h3>

A mathematical assertion in which you use mathematical symbols to demonstrate that two sums are equal.

As per specified data-

  • Marcus wishes to save $378 so that he can purchase a new electronic keyboard.
  • Every week, he saves $15.75 from his paycheck.

Let 'x' be the number of weeks required to complete the amount.

The equation becomes.

378 = 15.75x

For the number of week required.

x = 378/15.75

x = 24

Thus, Marcus would need to save for 24 weeks in order to purchase a new electronic keyboard.

To know more about the equation, here

brainly.com/question/14107099

#SPJ4

7 0
1 year ago
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