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3 years ago

Need help I don’t know the answer to this.

Mathematics

1 answer:

Bond [772]3 years ago

8 0

Answer:

what grade is this

Step-by-step explanation:

I'm very confused is this algebra?

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(7x7x7x7x7x7x7)-3x-3x-3

Anna71 [15]

Answer:

823516

Step-by-step explanation:

hope this helps

8 0

3 years ago

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Explain: How would you solve the equation? Place the steps below in the correct order.

nirvana33 [79]

use the distributive property

combine alike terms

add the negative number to the other side

combine alike terms

then divide on both sides to get the variable by itself

8 0

3 years ago

A 10-foot ladder leans against a wall so that it is 6 feet high at the top. The ladder is moved so that the base of the ladder t

konstantin123 [22]

Answer:

The top of the ladder is now at 10 ft.

Step-by-step explanation:

At the start, we have a height H=6, a length L=10 and a base B, that has to be calculated by the Pythagorean theorem:

$B^2=L^2-H^2=10^2-6^2=100-36=64\\\\B=\sqrt{64}=8$

The base is moved twice the distance the height moves up.

We called this distance x, so we have:

$L^2=(H+x)^2+(B-2x)^2=H^2+2Hx+x^2+B^2-4Bx+4x^2\\\\L^2=(H^2+B^2)+5x^2+(2H-4B)x\\\\L^2=L^2+5x^2+(2H-4B)x\\\\0=5x^2+(2H-4B)x\\\\5x+(2H-4B)=0\\\\x=\dfrac{4B-2H}{5}=\dfrac{4*8-2*6}{5}=\dfrac{32-12}{5}=\dfrac{20}{5}=4$

The new height (H+x) is

$H'=H+x=6+4=10$

The base travels 2x=8, so the new base B' is 0.

This means that the ladder is all against the wall (L=H').

6 0

3 years ago

How many solutions are there to the system of equations?<br><br> 4x-5y=5<br><br> -0.08x+0.10y=0.10

SIZIF [17.4K]

First equation simplifies to
y=(4/5)x-1
The second equation simplifies to
y=(4/5)x +1
So the answer is
No Solution

5 0

3 years ago

Use Pythagorean Theorem to find the value of x

Ahat [919]

Answer:

x = 13

Step-by-step explanation:

x = $\sqrt{x} a^{2} + b^{2}$

12^2 + 5^2 = 13

5 0

3 years ago

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