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tiny-mole [99]
3 years ago
13

Does anyone understand this and how do you do it??

Mathematics
1 answer:
ki77a [65]3 years ago
7 0
Yeah she spend two days studying 1.5 hours so multiply 1.5 times to to get three hours. Then she spent two days studying 2.5 so that would be 5. 8 hours total
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The sum of two numbers is 25. Their difference is 9. What are the two numbers?
Lynna [10]
Using x and y as the numbers

x+y=25 -------#1
x-y=9  -------#2

Using addition of #1 and #2
x+y+x-y= 25+9
2x+0y=34
2x=34
x=17

Using the value of x and plugging said value into #1 or #2, we can find y
x=17

x+y=25
17+y=25
y=8

OR

x-y=9
17-y=9
-y=-8
y=8

The numbers are 8 and 17
5 0
3 years ago
Read 2 more answers
What is the slope of (-3,5) and (2,0)
IrinaVladis [17]

Answer:

is there anymore to the question?

Step-by-step explanation:

8 0
2 years ago
a pack of baseball cards has 12 trading cards and 2 stickers. in a box of 36 packs, how many stickers and how many trading cards
kobusy [5.1K]
432 trading cards and 72 stickers
8 0
3 years ago
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A box contains fifteen billiard balls, numbered 1 through 15. Anna draws a ball, records the number, and then returns it to the
Drupady [299]

The correct end part of the question says;

Find the probability of rolling an even number "then" an odd number

Answer:

Probability of rolling even, then odd = 56/225

Step-by-step explanation:

Now, the numbers are from 1 to 15.

Since we want find probability of even, then odd number, let's list all the even numbers first;

Even numbers from 1 to 15 are;

2, 4, 6, 8, 10, 12, 14

Odd numbers from 1 to 15 are;

1, 3, 5, 7, 9, 11, 13, 15

So, we have 7 even numbers and 8 odd numbers.

Probability of even is = 7/15

Probability of odd is = 8/15

Thus,probability of rolling even, then odd is;

P(even, then odd) = 7/15 x 8/15 = 56/225

6 0
3 years ago
Simplify 24 – 6x – 18 + 5x<br><br> 3 – 3x<br><br> –x + 6<br><br> 2x – 3<br><br> –4x – 17
Svetach [21]

= <span><span>−x</span>+6</span>

<span>=<span><span> −<span>3x</span></span>+3</span></span>

<span>= </span><span><span>−x</span>+6</span>
= <span><span>2x</span>−3</span>

<span>= <span><span>−<span>4x</span></span>−<span>17</span></span></span>


6 0
3 years ago
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