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tatuchka [14]
3 years ago
14

What is the answer to 2/3 - 7/15=

Mathematics
1 answer:
elixir [45]3 years ago
7 0

Answer:

1/5

Step-by-step explanation:

2/3 - 7/15

Now when dealing with fractions, alas make the dominator ( bottom number the same), and the rule of thumb is, whatever u do to the bottom, must be done to the top

2 7

-------- - - - - - -

3 15

So now u should think, how to make 3 to 15, so u multiply it by 5, therefore u would also need to multiply it to the top

2 x 5 7

-------- - - - - - -

3 x 5 15

10 7

-------- - - - - - -

15 15

Now just minus horizontally ( u don't need to minus the dominator)

3

---------

15

Now can u make this fraction smaller? As in, is there a number that u can divide to the top and bottom, yes, that number is 3 in this case

3 ÷3

---------

15 ÷3

= 1

- - - - -

5

Thats your final answer

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The variable z is inversely proportional to x. When x is 6, z has the value 0.5. What is the value of z when x= 14?
Lilit [14]
Z is inversely proportional to X is the same as
z is directly proportional to 1/X
which can be written like this:-
y=k/X
________
0.5=k/6
0.5*6=k/6*6
k=3 ;
________
z = 3/14
Z = 0.2
7 0
3 years ago
The manufacturer of Pepsi claims that its 2-liter bottles contain, on average, no more than 250 calories. A sample of 20 2-liter
Stels [109]

Answer:

Yes, Sample information does indicate that a 2-liter bottle of Pepsi contains more than 250 calories  

Step-by-step explanation:  

Null Hypothesis [H0] : u < 250  

Alternate Hypothesis [H1] : u > 250 {One Tail}  

t = (x' - u) / [ sd / √n ]  

= (255 - 250) / (5.6 / √20)  

5 / (5.6 /√20)  

= 3.99  

As t ie 3.99 > t value 1.65 ie for one tail 95% confidence level. So, we reject the null hypothesis & conclude that it contains more than 250 calories.  

4 0
3 years ago
Describe how the graph of the function is related to the graph of f(x) = x^2
astraxan [27]

Answer:

a

Step-by-step explanation:

graph show it If you put a number in for x then you can see the different

4 0
3 years ago
Read 2 more answers
4^3sqrt(3x-3)^2+2=38
vlada-n [284]
Here, 4³√(3x-3)² + 2 = 38

= 4³ (3x - 3) = 38 - 2

= 192x - 192 = 36

= 192x = 192 + 36

= x = 228/192

= x = 1.1875  [ Final Answer ]

Hope this helps!
4 0
3 years ago
the container is filled completely with cheese sauce which expression can be used to find the total number of cubic inches of ch
blagie [28]
B is the answer



the formula is :

s = \pi {r}^{2} h
which r stands for radius
and h stands for height

the diameter is 16
so the radius is
16 \div 2 = 8


hope you understand it
7 0
3 years ago
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