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stich3 [128]
3 years ago
13

Help on this proportions question urgently needed

Mathematics
1 answer:
Tpy6a [65]3 years ago
6 0

Answer:

18

Step-by-step explanation:

60/30 = ?/9

2 = ?/9

? = 18

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The mass of a proton is about 1.7 \times 10^(-24). Write this number in standard notation.
OLga [1]

Now we have a negative exponent, which is the opposite of a positive exponent.

If a positive exponent means you're multiplying by 10s and it makes a number bigger by moving the decimal to the right, then

the opposite of this is that a negative exponent means you're dividing by 10s and making the number smaller by moving the decimal point to the left.

 

Examples:

930 \div 10 = 93

{\bf930 \div 10} \div 10 = {\bf 93} \div 10 = 9.3

 

The trick is to recognize that

930 \div 10 is the same thing as 930 \times 10^{-1}

{}\div 10 and {}\times 10^{-1} mean the same thing.

So, 930 {\bf {}\div 10 \div 10} = 930 {\bf {}\times 10^{-1}  \times 10^{-1}} = 930 {\bf {}\times 10^{-2}} = 9.3

 

For your exercise, {}\times10^{-24} means you'll move the decimal point 24 places to the left, to make the number smaller.

3 0
3 years ago
Coach Rivas can spend up to $750 on 30 swimsuits for the swim team. The inequality shown can be used to find the maximum amount
777dan777 [17]

Answer:

$0 < p ≤ $25

Step-by-step explanation:

We know that coach Rivas can spend up to $750 on 30 swimsuits.

This means that the maximum cost that the coach can afford to pay is $750, then if the cost for the 30 swimsuits is C, we have the inequality:

C ≤ $750

Now, if each swimsuit costs p, then 30 of them costs 30 times p, then the cost of the swimsuits is:

C = 30*p

Then we have the inequality:

30*p ≤ $750.

To find the possible values of p, we just need to isolate p in one side of the inequality.

So we can divide both sides by 30 to get:

(30*p)/30 ≤ $750/30

p ≤ $25

And we also should add the restriction:

$0 < p ≤ $25

Because a swimsuit can not cost 0 dollars or less than that.

Then the inequality that represents the possible values of p is:

$0 < p ≤ $25

6 0
3 years ago
What is the fractional equivalent of 0.2323
kicyunya [14]
Hello!

Your answer is \frac{23}{99}

If you use a calculator and divide 23 by 99, you will get 0.232323............

Answer ⇒ \frac{23}{99}
8 0
4 years ago
Help ASAP THANKS PLS number 3
Keith_Richards [23]
14.4pounds

57,600/4,000 is equals to 14.4pounds

i hope its correct:)
4 0
3 years ago
Partial sums<br><br> 359+342=
Rom4ik [11]

Answer:

701

Step-by-step explanation:

cuz its adding

6 0
3 years ago
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