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BARSIC [14]
3 years ago
10

What is 2/7+7/8 Help

Mathematics
2 answers:
Kitty [74]3 years ago
4 0

Answer:

65/56 = 1  9/56

Step-by-step explanation:

AysviL [449]3 years ago
3 0

Answer:

Step-by-step explanation:

16/56 + 49/56 = 65/56= 1 9/56

You might be interested in
(X^2+x-6)(2x^2+4x) factor completely
MissTica

Answer:

2x\left(x-2\right)\left(x+3\right)\left(x+2\right)

Step-by-step explanation:

Lets go ahead and take a step by step approach to solving your problem.

First we must start by factoring x^2+x-6.

To do this, we must break the expression into groups! Although I will also provide a definition to help you understand! For ax^2+bx+c we need to find u, v > u\cdot \:v=a\cdot \:c and u+v=b which we will group into \left(ax^2+ux\right)+\left(vx+c\right).

The values we have are...a=1,\:b=1,\:c=-6 and u\cdot v=-6,\:u+v=1.

Now we need the factors of 6 which are 1, 2, 3 and 6. We also need the negative factors which you get simply by multiplying the positives by -1 or just reversing them.

Now we need to check for every two factors if u + v = 1.

\mathrm{Check}\:u=1,\:v=-6: \:u\cdot v=-6,\:u+v=-5 \Rightarrow  \mathrm{False}

\mathrm{Check}\:u=2,\:v=-3: \:u\cdot v=-6,\:u+v=-1 \Rightarrow  \mathrm{False}

\mathrm{Check}\:u=3,\:v=-2: \:u\cdot v=-6,\:u+v=1 \Rightarrow  \mathrm{True}

\mathrm{Check}\:u=6,\:v=-1: \:u\cdot v=-6,\:u+v=5 \Rightarrow  \mathrm{False}

Therefore u=3,\:v=-2.

Now we want to \mathrm{Group\:into\:}\left(ax^2+ux\right)+\left(vx+c\right). Which is \left(x^2-2x\right)+\left(3x-6\right).

Now we must factor x from x^2-2x.

Lets apply the exponent rule of a^{b+c}=a^ba^c which means x^2=xx.

Therefore we now have xx - 2x. Lets factor out the common term of x to get x(x - 2).

Now factor 3 out of 3x-6.

Rewrite 6 as 3 * 2. 3x-3\cdot \:2.

Now factor out the common term of 3 > 3\left(x-2\right).

x\left(x-2\right)+3\left(x-2\right) > Factor out the common term of x - 2 > \left(x-2\right)\left(x+3\right).

Now lets factor 2x^2+4x.

Apply the previous exponent rule of a^{b+c}=a^ba^c > x^2=xx > 2xx+4x.

Now rewrite 4 as 2 * 2 > 2xx+2\cdot \:2x.

Now factor out the common term of 2x to get 2x(x + 2).

Combine it all and we get 2x\left(x-2\right)\left(x+3\right)\left(x+2\right).

Hope this helps!

7 0
3 years ago
And plz show an example.
andrey2020 [161]
First question: x= 1 2/3 + y
                      y= -1 2/3 - x
second question: y= 6 - 7x
                            x= y + 6/7
5 0
3 years ago
Yeah....I have no idea. I tried and apparently I got two wrong answers. ​
Karo-lina-s [1.5K]

Answer:

Step-by-step explanation:

(11,13)  (8,18)

slope = y₂ - y₁/x₂-x₁

= 18- 13 / 8-11

= 5 / - 3

= -5/3

4 0
3 years ago
Read 2 more answers
A hairdresser combined three bottles of shampoo into one bottle. The first bottle had 4.8 ounces of shampoo, the second bottle h
ohaa [14]

Answer: 6.72 ounces

Step-by-step explanation:

4.8 + 5.4 + 6.6 = 16.8

16.8/5 = 3.36

3.36 = 1/5

3.36 x 2 = 6.72

6.72 ounces

Hopefully this helps you

pls mark brainlest

6 0
3 years ago
1.5x + 0.5y = 12<br> Solve for y
aksik [14]
Y could be a number of different solutions
For example, y = 12
7 0
3 years ago
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