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lakkis [162]
2 years ago
11

i need help with my math :( im horrable with it i cant do divideing fractions nor multiply and i dont know most of my multiples

can anyone help im going into 7th​
Mathematics
1 answer:
vladimir1956 [14]2 years ago
6 0

Step-by-step explanation:

To multiply the fractions, like

\frac{1}{4}  \times  \frac{1}{9}

Multiply the top,

then multiply the bottom.

\frac{1}{4}  \times  \frac{1}{9}  =  \frac{1 \times 1}{4 \times 9}  =  \frac{1}{36}

Try to use a calculator if you aren't arithmetic heavy, but I suggest you to try to remember them because they are going to be helpful for courses like Algebra, Calculus, Statistics, etc.

To divide fractions, like

\frac{ \frac{1}{5} }{ \frac{1}{8} }

You take the top number,

\frac{1}{5}

Then you flip the bottom number,

\frac{8}{1}

Then multiply the two

\frac{1}{5}  \times  \frac{8}{1}  =  \frac{8}{5}

And that is your answer. Comment if you need more clarification

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I need help! who ever get this right and explain nicely then I make you brainlist.
Lelechka [254]

Answer:

1. 64

2. 72 square feet

3. 31.5 square feet

Step-by-step explanation:

For the first one use the equation A=bh.

Plug in your values: A=12.8*5.

Solve: A=64

For the second one multiply 8*3 which gives you 24. Next multiply that by 3 to give you 72 square feet.

For the third one multiply 9 by 3.5 to get 31.5 square feet.

5 0
3 years ago
Please help me , what is 2 x 2
Pepsi [2]

Answer:

4

Step-by-step explanation:

8 0
3 years ago
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Simplify x^2-9 over x^2-3x
Alla [95]

Answer:

\frac{x+3}{x} or x+3/x

Step-by-step explanation:

Using D.O.T.S (difference of two squares) formula :

a^{2} -b^{2} = (a+b)(a-b)

x^{2} -9= (x+3)(x-3)

Factorise the second bit:

x^{2} -3x = x(x-3)

Now write out this fraction:

\frac{(x+3)(x-3)}{x(x-3)}

Now we can cancel out repeated terms (x-3):

\frac{(x+3)}{x}
This is our final answer:

\frac{x+3}{x}

5 0
3 years ago
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A rectangular field is four times as long as it is wide. if the perimeter of the field is 340 ​yards, what are the​ field's dime
zmey [24]
Let the width of the field =  x.
Then the length = 4x 
Now the perimeter = 2 * length + 2 * width, so we have the equation:-
 2*4x + 2x = 340
8x + 2x = 340
10x = 340
x = 34 yards  = width
4x =  length = 136
Answer: the width is 34 yards and length is 136 yards. 
7 0
3 years ago
PLEASE ill mark brainlist i need help on these
KatRina [158]

Answer:

1. −6x+21

2. −47b+19

3.  -6x + 21

4.  5 + 47x

5.−6x+39

Step-by-step explanation:

7 0
3 years ago
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