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3 years ago

Simplify the expression -4b + 8c + 12 - 8b - 2c + 6.

Mathematics

1 answer:

otez555 [7]3 years ago

5 0

It is =-34 ok? There u go

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Elementary school students spend 1/6 of their day at recess on average. If they are in school 6 1/2 hours a day, how much time i

Alex17521 [72]

6 and 1/2= 13/2. 13/2*1/6=13/12 so they spent 1 and 1/12 of an hour on recess

5 0

3 years ago

Read 2 more answers

What is the slope of a line that is perpendicular to y+8=−32(x−2)

denis23 [38]

Answer:

boonpono

Step-by-step explanation:

7 0

3 years ago

Help me please !!!!!!!!!!!!!!

tensa zangetsu [6.8K]

Answer:

$\large\boxed{V=\dfrac{49\pi}{3}\ in^3}\approx51.29\ in^3}$

Step-by-step explanation:

The formula of a volume of a cone:

$V=\dfrac{1}{3}\pi r^2H$

r - radius

H - height

We have

r = (7 : 2) in = 3.5 in

H = 4 in

Substitute:

$V=\dfrac{1}{3}\pi(3.5)^2(4)=\dfrac{1}{3}\pi(12.25)(4)=\dfrac{49\pi}{3}\ in^3$

$\pi\approx3.14\\\\V\approx\dfrac{(49)(3.14)}{3}\approx51.29\ in^3$

5 0

3 years ago

Need help fast thanks and god bless

Nuetrik [128]

Answer:

275.

Step-by-step explanation:

The gradient of the graph is 70/2 = 35 and it passes through the origin so we can write its equation as

y = 35x.

The gradient of the function represented by the the table is

(240-180) / (4-3) = 60

Ehen x = 3 y = 180 so when x = 0 y = 180 - 60 - 60 - 60 = 0 and the equation of this function is

y = 60x.

For the first equation when x = 11, y = 35*11 = 385.

For the second it is 60 * 11 = 660

So our answer is 660 - 385

= 275

7 0

2 years ago

Triangle JKL is fromed by plotting three points. What is the leanth of sides JK?

Phoenix [80]

<h3><u>Solution</u><u>:</u><u>-</u></h3>

J (1,5)
K (1,9)

$\LARGE\leadsto\sf JK=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

$\LARGE\leadsto\sf \sqrt {(1-1)^2+(9-5)^2}$

$\LARGE\leadsto\sf \sqrt {(0)^2+(4)^2}$

$\LARGE\leadsto\sf \sqrt {0+16}$

$\LARGE\leadsto\sf \sqrt {16}$

$\LARGE\leadsto\sf JK=4units$

4 0

2 years ago