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wel
3 years ago
12

Which expression is equivalent to (3x + 6) + 4x?

Mathematics
1 answer:
bixtya [17]3 years ago
4 0

B. 7x + 6

Combine like terms. The x terms go together, and nothing changes with the 6 in this expression.

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How many enantiomeric pairs are possible for an aldohexose?<br> a.2<br> b.4<br> c.8<br> d.16?
seraphim [82]
Based on this question, one thing that we would seriously consider would be the fact of first, doing 2^4 first. By doing this, it would then give us our answer as 16. By us understanding this point of view, we would then consider that this would then be your answer. That would then include that there would then be 16 pairs of the "enantiomeric pairs", and that would then be the possible estimate.

<span>a.2
b.4
c.8
d.16</span>
4 0
3 years ago
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Plz plz help urgently ❤️
Delicious77 [7]

Answer:

D.

Step-by-step explanation:

5 0
3 years ago
I need help please?!!
IgorLugansk [536]

Answer:

-39

Step-by-step explanation:

you would subtract -15 from 20

7 0
3 years ago
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A cylinder shaped can needs to be constructed to hold 300 cubic centimeters of soup. The material for the sides of the can costs
oksano4ka [1.4K]

Answer:

Step-by-step explanation:

Cost = Area Cylinder body* cost * 0.03 cm^3 + Area of 2 lids*cost 0.06 of cm^3

Volume = 300 cm^3

Volume = Base *h  

Volume = pi * r^2 * h = 300

h = 300/(pi * r^2 )

Area material =  2*pi * r * h * 0.03 + 2 pi r^2 * 0.06

Area material = 0.06*pi * r * 300/(pi* r^2) + 0.12 * pi * r^2

dmaterial/dr = (-1)18 r^-2 + 0.12 pi * 2*r

dmaterial/dr = -18 r^-2 + 0.24 pi * r

The minimum occurs when the right side = 0

18/r^2 = 0.24 *pi r

18 = 0.24*pi * r^3

18/(0.24 * pi) = r^3

23.89 = r^3

cube root (23.89) = cuberoot(r^3)

r = 2.88 cm

h = 300/pi * r^2

h = 300/(3.14 * 2.88^2)

h = 11.52

This isn't much of a check but we can try it.

Volume = 3.14 * 2.88^2 * 11.52

Volume = 302.01 which considering all the rounding is pretty close.

Here's a graph that confirms my answer.

3 0
2 years ago
I need help Please , these tree make me bored , can you help me please . <br> Thank you so much
IgorLugansk [536]
1) question 18 of 20
-7x/5-(4y)=7
4y=-7x/5-(7)
y=-7x/20-(7/4).

if x=0  ⇒y=-7*0/20-7/4=-7/4  ⇒y-intercept is-7/4
fi y=0  ⇒  -7x/20-(7/4)=0
-7x/20=7/4
x=(7*20) / [4*-(7)]=-5         ⇒x-intercept is -5

Solution: D) x-intercept is -5 ; y-intercept is -7/4

 Question 19 of 20
P₁=(x₁,y₁)
P₂=(x₂,y₂)
m=slope

m=(y₂-y₁) / (x₂-x₁)

Then:
A(1,7)
B(10,1)

m=(1-7) / (10-1)=-6/9=-2/3.

Solution: B)-2/3

Question 20 of 20:
y-y₀=m.(x-x₀)
A(4,3)
B(-4,-2)

m=(-2-3) / (-4-4)=-5/-8=5/8

y-3=(5/8).(x-4)
y=5x/8-(20/8)+3
y=5x/8-(20/8)+24/8
y=5x/8+(4/8)
y=5x/8+1/2

solution: B) y=5x/8+1/2

5 0
3 years ago
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