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Rama09 [41]
3 years ago
15

Help for brainiest! and thanks! please comment reasoning and how you got it

Mathematics
2 answers:
IgorC [24]3 years ago
6 0

answer:

60 ft

step-by-step explanation:

first we need to know the formula on how to volume for rectangular prism get our answer, which is

length × width × height

and for this problem, thoses number would have to be

1.5 * 5 * 8

and honestly it doesn't really matter on which number we multiply first but i usually do left to right

1.5 * 5

= 7.5 feet

then we just need to multiply the left over numbers

7.5 * 8

= 60 feet

which is on the the choices for answers and also our answer!

if you wanted to double check it ( or your teacher makes you ) just divide our answer by any one of the three numbers from the start

60/8

= 7.5

then we do that step once again but instead we just use the answer ( 7.5 ) we had just gotten

7.5/5

= 5

and again it doesnt really matter which of the three numbers you use but never use the same numbers twice ( unless it shows up twice in the problem )

i hope this helps you, if you needed anymore help on this you can always ask me! :)

umka21 [38]3 years ago
4 0

Answer:

A.

Step-by-step explanation:

Formula for volume is: Length x width x height.

5 x 8 x 1.5

Therefore, your answer is 60 ft^3.

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Two planes are orthogonal if their normal vectors are orthogonal. Find the equation of a plane that is orthogonal to the plane 3
erica [24]

Answer:

X-5Y-4Z+12=0

Step-by-step explanation:

Plan P1 = 3x-y+2z=1. with A=(1,1,2); B=(2,2,1); we must will find V1 from P1,

V1 =(3,-1,2) and AB = (2-1,2-1,1-2) = (1,1,-1) now we find V2 by vector product.

V2 =V1.X,AB =\left[\begin{array}{ccc}i&j&k\\3&-1&2\\1&1&-1\end{array}\right] = i+2j+3k-(2i-3j-k)=V2=(-i+5j+4k); (aplying sarrus method)

according to general plan formula a(X-Xo)+b(Y-Yo)+c(Z-Zo); V=(a,b,c)

V2=(-1,5,4) ; A=(1,1,2);  so -(X-1)+5(Y-1)+4(z-2)=0  → -X+1+5Y-5+4Z-8=0  →

-X+5Y+4Z+1-5-8=0 → -X+5Y+4Z-12=0 (-1) → Plan equation X-5Y-4Z+12=0

4 0
4 years ago
What is 8x8x8x8x8x8x8? I don't have a calculator! Please help!
grin007 [14]
It is also the same as 8 to the power of 7
which looks something like this 8^7
you can also do it by doing 64×64×64×8
then do 64×64
multiply that answer by 64
multiply that answer by 8
this will work with any question and you can do it without a calculator and on paper.
6 0
3 years ago
Triangle X Y Z is shown. The length of side X Y is (9 n + 12) feet and the length of side X Z is (15 n minus 6) feet. Angles X Y
zmey [24]

Answer:

n = 3

XY = 39

XZ = 39

Step-by-step explanation:

Given

XY = 9n + 12

XZ = 15n - 6

Solving (a): n

To solve for n;

We make use of

XY = XZ

Substitute values for XY and XZ

9n + 12 = 15n - 6

9n - 15n = -12 - 6

-6n = -18

Divide through by -6

n = 3

Solving (b) XY

XY = 9n + 12

Substitute 3 for n

XY = 9 * 3 + 12

XY = 27 + 12

XY = 39

Solving (c): XZ

XZ = XY

XZ = 39

7 0
3 years ago
H(t)=(t+3)
olga2289 [7]

Answer:

Step-by-step explanation:

4 0
3 years ago
HELP WITH EXPLANATION, NO LINKS
kirill115 [55]

Answer:

  3x³ and 6x³, y and 7y

Step-by-step explanation:

Like terms have variables with the same exponents. This fact eliminates choices A, C, D.

The like terms are ...

  3x³ and 6x³, 7y and y . . . . . . choice B

3 0
2 years ago
Read 2 more answers
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