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iren [92.7K]
3 years ago
5

Tom has a solid, wooden block that is a rectangular prism with non-square bases. He saws the prism parallel to the base. What sh

ape is the cross section?
rectangle not square
triangle
diamond
square
Mathematics
1 answer:
Katyanochek1 [597]3 years ago
6 0

Answer:

A) Rectangle

Step-by-step explanation:

Hope this helps :D

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The diagram below is NOT drawn to scale. Are lines j and k parallel? How can you tell?
Artemon [7]

Answer:

No. They are slightly pointed. Even if it has the slightest angle that is not 180 degrees, then it is not parallel.

Step-by-step explanation:

3 0
3 years ago
At a particular restaurant, each pizza roll has 60 calories and each mini hotdog has 70 calories. A combination meal with pizza
PolarNik [594]

Answer:

There are 9 pizza rolls and 12 mini hotdogs in the meal.

Step-by-step explanation:

We are given the following in the question.

Let x be the number of pizza rolls sold and y be the number of mini hotdogs in the combination meal.

Total number of items in combination meal = 21

Thus, we can write the equation:

x + y = 21

Calorie in a pizza roll = 60

Calorie in a mini hotdog = 70

Total calories = 1380

Thus, we can write the equation:

60x + 70y = 1380

Solving the two equations, we get,

60x + 70y - (60x+60y) = 1380 - 60(21) \\10y = 120\\\Rightarrow y = 12\\\Rightarrow x = 21-12 = 9

Thus, there are 9 pizza rolls and 12 mini hotdogs in the meal.

4 0
3 years ago
Find the surface area of the surface given by the portion of the paraboloid z=3x2+3y2 that lies inside the cylinder x2+y2=4. (hi
natta225 [31]
Parameterize the part of the paraboloid within the cylinder - I'll call it S - by

\mathbf r(u,v)=\langle x(u,v),y(u,v),z(u,v)\rangle=\left\langle u\cos v,u\sin v,3u^2\right\rangle

with 0\le u\le2 and 0\le v\le2\pi. The region's area is given by the surface integral

\displaystyle\iint_S\mathrm dS=\int_{u=0}^{u=2}\int_{v=0}^{v=2\pi}\|\mathbf r_u\times\mathbf r_v\|\,\mathrm du\,\mathrm dv
=\displaystyle\int_{v=0}^{v=2\pi}\int_{u=0}^{u=2}u\sqrt{1+36u^2}\,\mathrm du\,\mathrm dv
=\displaystyle2\pi\int_{u=0}^{u=2}u\sqrt{1+36u^2}\,\mathrm du

Take w=1+36u^2 so that \mathrm dw=72u\,\mathrm du, and the integral becomes

=\displaystyle\frac{2\pi}{72}\int_{w=1}^{w=145}\sqrt w\,\mathrm dw
=\displaystyle\frac\pi{36}\frac23w^{3/2}\bigg|_{w=1}^{w=145}
=\dfrac\pi{54}(145^{3/2}-1)\approx101.522
7 0
3 years ago
PLZZZZZZ HELPPPPP!!!!!!
TEA [102]

Answer:

1

Step-by-step explanation:

1/2×2 = 2/2 = 1

_____________________

8 0
3 years ago
The ratio of boys to girls in a class is 7:5. There are 36 students in the class. How many students are girls?
Art [367]

Answer:

15 students are girls

Step-by-step explanation:

7+5=12

36÷12=3

3x5=15

5 0
2 years ago
Read 2 more answers
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