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2 years ago

Please help and give me an explanation I don’t understand or know if it’s correct

Mathematics

1 answer:

andrezito [222]2 years ago

7 0

Hello :) we got similar answers but i believe you made a few distributing mistakes! hopefully my work makes sense, if not i’ll totally try to explain more

p.s i might be too late whoops

p.p.s i’m in a higher grade but i haven’t done this kinda math in a longgg time haha so if you think i did something wrong trust your gut ✌️

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Question 71

yuradex [85]

Answer:

given

p=q^3

p=40

______

q=(p)^1/3

q=(40)^1/3-->q=2(5)^1/3

Now

the value of half of q , (2(5)^1/3)÷(2) ,is 5^1/3.

finally the value of p gonna be

p=q^3

p=(5^1/3) ^ 3

p=5

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2 years ago

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Find x. Perimeter.<br><br> What is the value of x?<br><br> What is the perimeter of this triangle?

gladu [14]

Step-by-step explanation:

the distance of a vertex on the 2 outgoing sides to the touching points with the inscribed circle is the same for both sides.

and that applies to all 3 vertexes.

so, we know for the top left vertex the distance to both touching points is 4.

that means the distance to the touching points from the bottom left vertex is 7-4 = 3.

and that means that the distance to the touching points from the bottom right vertex is 16-3 = 13.

so, x = 13

it is the distance to one of the touching points for the bottom right vertex.

and the perimeter of the triangle is therefore

7 + 16 + (13 + 4) = 40

7 0

1 year ago

8x-5y=15 <br>6x+4y=43<br>solve the system by any method

Sedbober [7]

Answer:

$x=\frac{275}{62}$ , $y=\frac{127}{31}$

Step-by-step explanation:

<h3>I will use the elimination method.</h3>

We want to make the X's the same:

$24x-15y=45$

$24x+16y=172$

Because the signs of the X's are the same we subtract the 2 equations to make:

(I put the second one on top of the 1st)

$31y=127$

So:

$y=\frac{127}{31}$

Substitute y into either equation 1 or 2:

(I chose equation 1)

$8x-5(\frac{127}{31})=15$

$8x=5(\frac{127}{31}) + 15$

$x=\frac{5(\frac{127}{31})}{8}$

So:

$x=\frac{275}{62}$

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2 years ago

Solve the system by substitution. y=2x^2-3x-1 y=x-3

padilas [110]

The answer is B(1,-2). This is the only point where the two lines intercept. & if you plug the numbers into the equations they fit.

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2 years ago

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on the same bus, 1/3 of the French speakers can also speak German. how many people can speak both German and French

Alenkinab [10]

It's easy if you just break it into pieces...

1/3 OF the 4/9 French OF people on the bus (27) also speak German.

Of= Multiply

1/3*4/9*27/1=4 speak French AND German

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3 years ago