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3 years ago

What's 7/8x4/5? Cmon peeps it's hard

2 answers:

6 0

To multiply fractions, all you have to do is multiply the numerator and then the denominator, and then reduce and make into mixed numbers!
7x4=28
8x5=40.
28/4=7
40/4=10

Your answer to this is 7/10!!!!! I hope this helps you!!

Alik [6]3 years ago

5 0

$\frac{7}{8}* \frac{4}{5}= \frac{28}{40} =\boxed{0.7}\ or\ \boxed{ \frac{7}{10}}$

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Determine if its possible to form a triangle using the set of segments with the given measurement. explain please! 7 in., 8.7.,

mafiozo [28]

Start by adding together the shortest two sides, 7 and 8.7 inches. Result: 15.7 inches. Because this sum is greater than the longest side, 15.4 inches, it's possible to construct a triangle, whose largest angle will be close to 180 degrees.

8 0

3 years ago

There were 16 bales of hay in the barn. Fred stacked more bales in the barn today. there are now 93 bales of hay in the barn. ho

ddd [48]

Answer:

Step-by-step explanation:

16+b(bales)=93is the same as 93-16=b so b=77

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3 years ago

What is the equation in point-slope form of a line that passes through the points (7, −8) and (−4, 6) ?

Aleks04 [339]

First you differentiate to find the gradient

dy/dx = (6 - - 8) / (-4 - 7)
= 14 / -11
= - 14/11

Then you use this formula
y - y1 = m (x - x1)

y1 being the y coordinate
x1 being the x coordinate
m being the gradient (or slope)

y - 6 = -14/11 (x - - 4)
y - 6 = -14/11x - 56/11
y = -14/11x + 10/11

5 0

3 years ago

I am a polyhedron.

scZoUnD [109]

It could be a deltahedron. A deltahedron has all faces being an equilateral triangle. The amount of faces can vary from 4, 6, 8, 10, 12, 14, 16 and 20.

4 0

3 years ago

Find the largest prime divisor of $15^6 - 7^6$<img src="https://tex.z-dn.net/?f=Find%20the%20largest%20prime%20divisor%20of%20%2

Novosadov [1.4K]

Answer:

Largest prime factor of the given expression is <em>379.</em>

Step-by-step explanation:

Given the expression:

$15^6 - 7^6$

To find:

The largest prime factor of the given expression.

Solution:

First of all, let us factorize the given expression.

$15^6 - 7^6\\\Rightarrow (15^3)^2 - (7^3)^2\\\\\text{Using } x^{2} -y^2 = (x+y) (x-y)\\\\\Rightarrow (15^3+7^3)(15^3-7^3)$

Let us learn two formula:

$x^3+y^3 = (x+y)(x^2+y^2-xy)$

$x^3-y^3 = (x-y)(x^2+y^2+xy)$

Applying the above formula in the expression written above:

$(15^3+7^3) = (15+7)(15^2+7^2-15\times 7)\\\Rightarrow 22(225+49-105 ) = 2 \times 11 \times 169 \\\Rightarrow 2 \times 11\times 13\times 13\\\Rightarrow 2 \times 11\times 13^2$ ...... (1)

Similarly:

$(15^3-7^3) = (15-7)(15^2+7^2+15\times 7)\\\Rightarrow 8(225+49+105 ) = 2^3 \times 379$ ........ (2)

Multiplying the expressions from (1) and (2) to get the result:

$\therefore 15^6 - 7^6 = 2^4 \times 11 \times \underline{\bold{379}} \times 13 ^2$

So, largest prime factor of the given expression is <em>379.</em>

7 0

3 years ago