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IRISSAK [1]
3 years ago
10

14d + 21 and 7(2d + 3)

Mathematics
2 answers:
Gennadij [26K]3 years ago
3 0

Answer:

the answer is 28d + 42

Step-by-step explanation:

multiply what's on the brackets them add

Vlada [557]3 years ago
3 0
Answer:
D can be any value

Explanation:
First, we apply the distributive property to 7(2d+3) by multiplying 7 by both values (this is to open up the parentheses)

7(2d+3)
=14d+21

Now, we learn that 7(2d+3)=14d+21, which is the same thing as 14d+21=14d+21.

14d+21=14d+21
14d-14d=21-21
0=0

Because we’ve reached 0=0, which is a true statement, and not a value for d, d can be any value and the statements will be true.

I hope this helps!
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Which point, (5/2, 3) or (3/2, 20), is on the graph of 2x - 2/3y =3?<br><br> show steps pls!
Anna11 [10]
You should try both points
put  x=5/2 and y=3
5-2=3
the first one is on the graph
put  x=3/2 and y=20
3-40/3≠3
the second one is not on the graph


4 0
3 years ago
Why is everyone ignoring the questions I ask?
Elena L [17]

Answer:

o-

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Number 13 I don’t get it
Nina [5.8K]
<h3>Answer:  1/2  (choice A)</h3>

===========================================

Explanation:

The two equations given to us are

  • ab = 3
  • ab^2 = 18

Divide the second equation over the first equation and that would lead to b = 6

Notice how the 'a' terms divide to 1 and go away, i.e. cancel out.

The b terms divide to (b^2)/b = b

The right hand side values divide to 18/3 = 6

So that's how we end up with b = 6

-------------------------

Now if b = 6, then we can say,

ab = 3

a*6 = 3

a = 3/6

a = 1/2

Or we could say

ab^2 = 18

a*6^2 = 18

a*36 = 18

a = 18/36

a = 1/2

5 0
3 years ago
Find the dimensions of the rectangular box with largest volume if the total surface area is given as 64cm^2
motikmotik
Let x =lenght, y = width, and z =height 
<span>The volume of the box is equal to V = xyz </span>
<span>Subject to the surface area </span>
<span>S = 2xy + 2xz + 2yz = 64 </span>
<span>= 2(xy + xz + yz) </span>
<span>= 2[xy + x(64/xy) + y(64/xy)] </span>
<span>S(x,y)= 2(xy + 64/y + 64/x) </span>
<span>Then </span>
<span>Mx(x, y) = y = 64/x^2 </span>
<span>My(x, y) = x = 64/y^2 </span>
<span>y^2 = 64/x </span>
<span>(64/x^2)^2 = 64 </span>
<span>4096/x^4 = 64/x </span>
<span>x^3 = 4096/64 </span>
<span>x^3 = 64 </span>
<span>x = 4 </span>
<span>y = 64/x^2 </span>
<span>y = 4 </span>
<span>z= 64/yx </span>
<span>z= 64/16 </span>
<span>z = 4 </span>

<span>Therefor the dimensions are cube 4.</span>
6 0
3 years ago
The capacity of a small theater is 125 people. Tickets for a particular show cost $14.50. The revenue for that show is a functio
faltersainse [42]

Answer:

The domain of this function is first restricted to all non negative integers  because the theater can sell only a whole number of tickets.

The domain is restricted to numbers less than or equal to 125 because the theater cannot sell more tickets than capacity.

Step-by-step explanation:

3 0
3 years ago
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