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3 years ago

8

Help with this??? please

1 answer:

Aleks [24]3 years ago

4 0

Look at the picture.

Use the Pythagorean theorem.

$(19+r)^2=r^2+35^2\\\\19^2+2\cdot19\cdot r+r^2=r^2+1225\ \ \ |-r^2\\\\361+38r=1225\ \ \ |-361\\\\38r=864\ \ \ |:38\\\\r\approx22.737$

The diameter d = 2r.

Therefore

$d=2\cdot22.737=45.474\approx45.5$

Answer: 45.5

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4 0

3 years ago

Read 2 more answers

Solve the system of equations by graphing. x+y=-9 4x+y=-19

shutvik [7]

For this case we have the following system of equations:

$x + y = -9\\4x + y = -19$

We multiply the first equation by -4:

$-4x-4y = 36$

We have the following equivalent system of equations:

$-4x-4y = 36\\4x + y = -19$

We add the equations:

$-4x + 4x-4y + y = 36-19\\-3y = 17\\y = - \frac {17} {3}$

We find the value of the variable "x":

$x = -9-yx = -9 - (- \frac {17} {3})\\x = -9 + \frac {17} {3}\\x = \frac {-27 + 17} {3}\\x = - \frac {10} {3}$

Thus, the solution of the system is:

$(x, y): (- \frac {10} {3}, - \frac {17} {3})$

See the graphic in the attached image

ANswer:

$(x, y): (- \frac {10} {3}, - \frac {17} {3})$

See the graphic in the attached image

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4 years ago

Which expression is equivalent to 2n + 3n - 0.32n? A.5.32n

il63 [147K]

Answer:

B. 4.68n

Step-by-step explanation:

Given

2n + 3n - 0.32n

= 5n - 0.32n

= 4.68n

Hope it will help :)❤

3 0

3 years ago