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Sliva [168]
3 years ago
7

A cereal box is 12cm tall. The area of the base is 7cm. What is the volume?

Mathematics
1 answer:
evablogger [386]3 years ago
3 0

Answer:

84cm3

Step-by-step explanation:

Volume of the box = Area x Height

V = AH

From the question given,

Height = 12cm

Area = 7cm2

Volume =?

Volume = Area x Height

Volume = 7 x 12

Volume = 84cm3

Therefore, the volume of the cereal box is 84cm3

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Delicious77 [7]
Ah okay so in differential equations you usually want the top variable isolated. To do this, multiply by dt and 2u and you get
2udu = 2t + { \sec(t) }^{2} dt
Now just integrate both sides. The integral of 2u with respect to u is u². The integral of (2t + sec²(t) with respect to t is t² + ∫sec²(t)dt. The last part is just tan(x) because d/dt(tan(t)) is sec²(t) so just integrating gets us back. Now we have
{u}^{2}   + c =  {t}^{2}  +  \tan(t)  + k
Where c and k are arbitrary constants. Subtracting c from k and you get
{u}^{2}  =  {t}^{2}  +  \tan(t)  + b
Where b is another constant. To find b, just plug in u(0) = -1 where u is -1 and t is 0. This becomes
1 =  \tan(0)  + b
tan(0) is 0 so b = 1. Take the plus or minus square root on both sides and you finally get
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But Brainly didn't let me do but juat remember there is a plus or minus square root on the left.
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3 years ago
Find the product mentally. (ab + 3)2 ab2 + 6ab + 9 2ab + 6 a2b2 + 6ab + 9
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I think it's a^2 b^2 + 6ab + 9

4 0
3 years ago
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I need help with this question... the topic is solving linear systems of equations using elimination (addition). Please give exp
gregori [183]

Answer:

x= -1

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Step-by-step explanation:

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3y-6=3x and y+2x=5 solve the system of linear equations by graphing PLEASE SHOW WORK​
Dmitry_Shevchenko [17]

Answer:

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Step-by-step explanation:

The "work" of solving by graphing is typing the equations into a graphing calculator and highlighting the point of intersection.

___

If you're graphing these by hand, there are a couple of strategies you can use. One is to make use of the intercepts of the line. For each of these, you need to rearrange the equation to a suitable form.

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To put this into "intercept form", put the variable terms on one side of the equal sign and the constant on the other. Then divide by the constant and express the resulting variable coefficients as denominators.

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The intercepts for this one are found by dividing by 5:

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When you plot these lines, you find they intersect at (1, 3). That is the solution to the system of equations, the values of x and y that satisfy both equations.

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So your answer will be 6,2.

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7 0
3 years ago
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